Understanding SpeedGrade

df1615_sg_1How you handle color correction depends on your temperament and level of expertise. Some editors want to stay within the NLE, so that editorial adjustments are easily made after grading. Others prefer the roundtrip to a powerful external application. When Adobe added the Direct Link conduit between Premiere Pro CC and SpeedGrade CC, they gave Premiere Pro editors the best of both worlds.

Displays

df1615_sg_4SpeedGrade is a standalone grading application that was initially designed around an SDI feed from the GPU to a second monitor for your external video. After the Adobe acquisition, Mercury Transmit was eventually added, so you can run SpeedGrade with one display, two computer displays, or a computer display plus a broadcast monitor. With a single display, the video viewer is integrated into the interface. At home, I use two computer displays, so by enabling a dual display layout, I get the SpeedGrade interface on one screen and the full-screen video viewer on the other. To do this you have to correctly offset the pixel dimensions and position for the secondary display in order to see it. Otherwise the image is hidden behind the interface.

Using Mercury Transmit, the viewer image is sent to an external monitor, but you’ll need an appropriate capture/monitoring card or device. AJA products seem to work fine. Some Blackmagic devices work and others don’t. When this works, you will lose the viewer from the interface, so it’s best to have the external display close – as in next to your interface monitor.

Timeline

df1615_sg_3When you use Direct Link, you are actually sending the Premiere Pro timeline to SpeedGrade. This means that edits and timeline video layers are determined by Premiere Pro and those editing functions are disabled in SpeedGrade. It IS the Premiere Pro timeline. This means certain formats that might not be natively supported by a standalone SpeedGrade project will be supported via the Direct Link path – as long as Premiere Pro natively supports them.

There is a symbiotic relationship between Premiere Pro and SpeedGrade. For example, I worked on a music video that was edited natively using RED camera media. The editor had done a lot of reframing from the native 4K media in the 1080 timeline. All of this geometry was correctly interpreted by SpeedGrade. When I compared the same sequence in Resolve (using an XML roundtrip), the geometry was all wrong. SpeedGrade doesn’t give you access to the camera raw settings for the .r3d media, but Premiere Pro does. So in this case, I adjusted the camera raw values by using the source settings control in Premiere Pro, which then carried those adjustments over to SpeedGrade.

df1615_sg_2Since the Premiere Pro timeline is the SpeedGrade timeline when you use Direct Link, you can add elements into the sequence from Premiere, in order to make them available in SpeedGrade. Let’s say you want to add a common edge vignette across all the clips of your sequence. Simply add an adjustment layer to a top track while in Premiere. This appears in your SpeedGrade timeline, enabling you to add a mask and correction within the adjustment layer clip. In addition, any video effects filters that you’ve applied in Premiere will show up in SpeedGrade. You don’t have access to the controls, but you will see the results interactively as you make color correction adjustments.

df1615_sg_17All SpeedGrade color correction values are applied to the clip as a single Lumetri effect when you send the timeline back to Premiere Pro. All grading layers are collapsed into a single composite effect per clip, which appears in the clip’s effect stack (in Premiere Pro) along with all other filters. In this way you can easily trim edit points without regard to the color correction. Traditional roundtrips render new media with baked-in color correction values. There, you can only work within the boundaries of the handles that you’ve added to the file upon rendering. df1615_sg_16Not so with Direct Link, since color correction is like any other effect applied to the original media. Any editorial changes you’ve made in Premiere Pro are reflected in SpeedGrade should you go back for tweaks, as long as you continue to use Direct Link.

12-way and more

df1615_sg_5Most editors are familiar with 3-way color correctors that have level and balance controls for shadows, midrange and highlights. Many refer to SpeedGrade’s color correction model as a 12-way color corrector. The grading interface features a 3-way (lift/gamma/gain) control for four ranges of correction: overall, shadows, midrange, and highlights. Each tab also adds control of contrast, pivot, color temperature, magenta (tint), and saturation. Since shadow, midrange, and highlight ranges overlap, you also have sliders that adjust the overlap thresholds between shadow and midrange and between the midrange and highlight areas.

df1615_sg_7Color correction is layer based – similar to Photoshop or After Effects. SpeedGrade features primary (“P”) , secondary (“S”) and filter layers (the “+” symbol). When you add layers, they are stacked from bottom to top and each layer includes an opacity control. As such, layers work much the same as rooms in Apple Color or nodes in DaVinci Resolve. You can create a multi-layered adjustment by using a series of stacked primary layers. Shape masks, like that for a vignette, should be applied to a primary layer. df1615_sg_10The mask may be normal or inverted so that the correction is applied either to the inside or the outside of the mask. Secondaries should be reserved for HSL keys. For instance, highlighting the skin tones of a face to adjust its color separately from the rest of the image. The filter layer (“+”) is where you’ll find a number of useful tools, including Photoshop-style creative effect filters, LUTs, and curves.

Working with grades

df1615_sg_13The application of color correction can be applied to a clip as either a master clip correction or just a clip correction (or both). When you grade using the default clip tab, then that color correction is only being applied to that single clip. If you grade in the master clip tab, then any color correction that you apply to that clip will also be applied to every other instance of that same media file elsewhere on the timeline. Theoretically, in a multicam edit – made up of four cameras with a single media file per camera – you could grade the entire timeline by simply color correcting the first clip for each of the four cameras as a master clip correction. All other clips would automatically inherit the same settings. Of course, that almost never works out quite as perfectly, therefore, you can grade a clip using both the master clip and the regular clip tabs. Use the master for a general setting and still use the regular clip tab to tweak each shot as needed.

df1615_sg_9Grades can be saved and recalled as Lumetri Looks, but typically these aren’t as useful in actual grading as standard copy-and-paste functions – a recent addition to SpeedGrade CC. Simply highlight one or more layers of a graded clip and press copy (cmd+c on a Mac). Then paste (cmd+v on a Mac) those to the target clip. These will be pasted in a stack on top of the default, blank primary correction that’s there on every clip. You can choose to use, ignore, or delete this extra primary layer.

SpeedGrade features a cool trick to facilitate shot matching. The timeline playhead can be broken out into multiple playheads, which will enable you to compare two or more shots in real-time on the viewer. This quick comparison lets you make adjustments to each to get a closer match in context with the surrounding shots.

A grading workflow

df1615_sg_14Everyone has their own approach to grading and these days there’s a lot of focus on camera and creative LUTs. My suggestions for prepping a Premiere Pro CC sequence for SpeedGrade CC go something like this.

df1615_sg_6Once, you are largely done with the editing, collapse all multicam clips and flatten the timeline as much as possible down to the bottom video layer. Add one or two video tracks with adjustment layers, depending on what you want to do in the grade. These should be above the last video layer. All graphics – like lower thirds – should be on tracks above the adjustment layer tracks. This is assuming that you don’t want to include these in the color correction. Now duplicate the sequence and delete the tracks with the graphics from the dupe. Send the dupe to SpeedGrade CC via Direct Link.

In SpeedGrade, ignore the first primary layer and add a filter layer (“+”) above it. Select a camera patch LUT. For example, an ARRI Log-C-to-Rec-709 LUT for Log-C gamma-encoded Alexa footage. Repeat this for every clip from the same camera type. If you intend to use a creative LUT, like one of the SpeedLooks from LookLabs, you’ll need one of their camera patches. This shifts the camera video into a unified gamma profile optimized for their creative LUTs. If all of the footage used in the timeline came from the same camera and used the same gamma profile, then in the case of SpeedLooks, you could apply the creative LUT to one the adjustment layer clips. This will apply that LUT to everything in the sequence.

df1615_sg_8Once you’ve applied input and output LUTs you can grade each clip as you’d like, using primary and secondary layers. Use filter layers for curves. Any order and any number of layers per clip is fine. Using this methodology all grading is happening between the camera patch LUT and the creative LUT added to the adjustment layer track. Finally, if you want a soft edge vignette on all clips, apply an edge mask to the default primary layer of the topmost adjustment layer clip. Adjust the size, shape, and softness of the mask. Darken the outside of the mask area. Done.df1615_sg_11

(Note that not every camera uses logarithmic gamma encoding, nor do you want to use LUTs on every project. These are the “icing on the cake”, NOT the “meat and potatoes” of grading. If your sequence is a standard correction without any stylized creative looks, then ignore the LUT procedures I described above.)

df1615_sg_15Now simply send your timeline back to Premiere Pro (the “Pr” button). Back in Premiere Pro CC, duplicate that sequence. Copy-and-paste the graphics tracks from the original sequence to the available blank tracks of the copy. When done, you’ll have three sequences: 1) non-color corrected with graphics, 2) color corrected without graphics, and 3) final with color correction and graphics. The beauty of the Direct Link path between Premiere Pro CC and SpeedGrade CC is that you can easily go back and forth for changes without ever being locked in at any point in the process.

©2015 Oliver Peters

Adobe Anywhere and Divine Access

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Editors like the integration of Adobe’s software, especially Dynamic Link and Direct Link between creative applications. This sort of approach is applied to collaborative workflows with Adobe Anywhere, which permits multiple stakeholders, including editors, producers and directors, to access common media and productions from multiple, remote locations. One company that has invested in the Adobe Anywhere environment is G-Men Media of Venice, California, who installed it as their post production hub. By using Adobe Anywhere, Jeff Way (COO) and Clay Glendenning (CEO) sought to improve the efficiency of the filmmaking process for their productions. No science project – they have now tested the concept in the real world on several indie feature films.

Their latest film, Divine Access, produced by The Traveling Picture Show Company in association with G-Men Media, is a religious satire centering on reluctant prophet Jack Harriman. Forces both natural and supernatural lead Harriman down a road to redemption culminating in a final showdown with his long time foe, Reverend Guy Roy Davis. Steven Chester Prince (Boyhood, The Ringer, A Scanner Darkly) moves behind the camera as the film’s director. The entire film was shot in Austin, Texas during May of 2014, but the processing of dailies and all post production was handled back at the Venice facility. Way explains, “During principal photography we were able to utilize our Anywhere system to turn around dailies and rough cuts within hours after shooting. This reduced our turnaround time for review and approval, thus reducing budget line items. Using Anywhere enabled us to identify cuts and mark them as viable the same day, reducing the need for expensive pickup shoots later down the line.”

The production workflow

df0115_da_3_smDirector of Photography Julie Kirkwood (Hello I Must Be Going, Collaborator, Trek Nation) picked the ARRI ALEXA for this film and scenes were recorded as ProRes 4444 in 2K. An on-set data wrangler would back up the media to local hard drives and then a runner would take the media to a downtown upload site. The production company found an Austin location with 1GB upload speeds. This enabled them to upload 200GB of data in about 45 minutes. Most days only 50-80GB were uploaded at one time, since uploads happened several times throughout each day.

Way says, “We implemented a technical pipeline for the film that allowed us to remain flexible.  Adobe’s open API platform made this possible. During production we used an Amazon S3 instance in conjunction with Aspera to get the footage securely to our system and also act as a cloud back-up.” By uploading to Amazon and then downloading the media into their Anywhere system in Venice, G-Men now had secure, full-resolution media in redundant locations. Camera LUTs were also sent with the camera files, which could be added to the media for editorial purposes in Venice. Amazon will also provide a long-term archive of the 8TB of raw media for additional protection and redundancy. This Anywhere/Amazon/Aspera pipeline was supervised by software developer Matt Smith.

df0115_da_5_smBack in Venice, the download and ingest into the Anywhere server and storage was an automated process that Smith programmed. Glendenning explains, “It would automatically populate a bin named for that day with the incoming assets. Wells [Phinny, G-Men editorial assistant] would be able to grab from subfolders named ‘video’ and ‘audio’ to quickly organize clips into scene subfolders within the Anywhere production that he would create from that day’s callsheet. Wells did most of this work remotely from his home office a few miles away from the G-Men headquarters.” Footage was synced and logged for on-set review of dailies and on-set cuts the next day. Phinny effectively functioned as a remote DIT in a unique way.

Remote access in Austin to the Adobe Anywhere production for review was made possible through an iPad application. Way explains, “We had close contact with Wells via text message, phone and e-mail. The iPad access to Anywhere used a secure VPN connection over the Internet. We found that a 4G wireless data connection was sufficient to play the clips and cuts. On scenes where the director had concerns that there might not be enough coverage, the process enabled us to quickly see something. No time was lost to transcoding media or to exporting a viewable copy, which would be typical of the more traditional way of working.”

Creative editorial mixing Adobe Anywhere and Avid Media Composer

df0115_da_4_smOnce principal photography was completed, editing moved into the G-Men mothership. Instead of editing with Premiere Pro, however, Avid Media Composer was used. According to Way, “Our goal was to utilize the Anywhere system throughout as much of the production as possible. Although it would have been nice to use Premiere Pro for the creative edit, we believed going with an editor that shared our director’s creative vision was the best for the film. Kindra Marra [Scenic Route, Sassy Pants, Hick] preferred to cut in Media Composer. This gave us the opportunity to test how the system could adapt already existing Adobe productions.” G-Men has handled post on other productions where the editor worked remotely with an Anywhere production. In this case, since Marra lived close-by in Santa Monica, it was simpler just to set up the cutting room at their Venice facility. At the start of this phase, assistant editor Justin (J.T.) Billings joined the team.

Avid has added subscription pricing, so G-Men installed the Divine Access cutting room using a Mac Pro and “renting” the Media Composer 8 software for a few months. The Anywhere servers are integrated with a Facilis Technology TerraBlock shared storage network, which is compatible with most editing applications, including both Premiere Pro and Media Composer. The Mac Pro tower was wired into the TerraBlock SAN and was able to see the same ALEXA ProRes media as Anywhere. According to Billings, “Once all the media was on the TerraBlock drives, Marra was able to access these in the Media Composer project using Avid’s AMA-linking. This worked well and meant that no media had to be duplicated. The film was cut solely with AMA-linked media. External drives were also connected to the workstations for nightly back-ups as another layer of protection.”

Adobe Anywhere at the finish line

df0115_da_6_smOnce the cut was locked, an AAF composition for the edited sequence was sent from Media Composer to DaVinci Resolve 11, which was installed on an HP workstation at G-Men. This unit was also connected to the TerraBlock storage, so media instantly linked when the AAF file was imported. Freelance colorist Mark Todd Osborne graded the film on Resolve 11 and then exported a new AAF file corresponding to the rendered media, which now also existed on the SAN drives. This AAF composition was then re-imported into Media Composer.

Billings continues, “All of the original audio elements existed in the Media Composer project and there was no reason to bring them into Premiere Pro. By importing Resolve’s AAF back into Media Composer, we could then double-check the final timeline with audio and color corrected picture. From here, the audio and OMF files were exported for Pro Tools [sound editorial and the mix is being done out-of-house]. Reference video of the film for the mix could now use the graded images. A new AAF file for the graded timeline was also exported from Media Composer, which then went back into Premiere Pro and the Anywhere production. Once we get the mixed tracks back, these will be added to the Premiere Pro timeline. Final visual effects shots can also be loaded into Anywhere and then inserted into the Premiere Pro sequence. From here on, all further versions of Divine Access will be exported from Premiere Pro and Anywhere.”

Glendenning points out that, “To make sure the process went smoothly, we did have a veteran post production supervisor – Hank Braxtan – double check our workflow.  He and I have done a lot of work together over the years and has more than a decade of experience overseeing an Avid house. We made sure he was available whenever there were Avid-related technical questions from the editors.”

Way says, “Previously, on post production of [the indie film] Savageland, we were able to utilize Anywhere for full post production through to delivery. Divine Access has allowed us to take advantage of our system on both sides of the creative edit including principal photography and post finishing through to delivery. This gives us capabilities through entire productions. We have a strong mix of Apple and PC hardware and now we’ve proven that our Anywhere implementation is adaptable to a variety of different hardware and software configurations. Now it becomes a non-issue whether it’s Adobe, Avid or Resolve. It’s whatever the creative needs dictate; plus, we are happy to be able to use the fastest machines.”

Glendenning concludes, “Tight budget projects have tight deadlines and some producers have missed their deadlines because of post. We installed Adobe Anywhere and set up the ecosystem surrounding it because we feel this is a better way that can save time and money. I believe the strategy employed for Divine Access has been a great improvement over the usual methods. Using Adobe Anywhere really let us hit it out of the park.”

Originally written for DV magazine / CreativePlanetNetwork.

©2015 Oliver Peters

Gone Girl

df_gg_4David Fincher is back with another dark tale of modern life, Gone Girl – the film adaptation of Gillian Flynn’s 2012 novel. Flynn also penned the screenplay.  It is the story of Nick and Amy Dunne (Ben Affleck and Rosamund Pike) – writers who have been hit by the latest downturn in the economy and are living in America’s heartland. Except that Amy is now mysteriously missing under suspicious circumstances. The story is told from each of their subjective points of view. Nick’s angle is revealed through present events, while Amy’s story is told through her diary in a series of flashbacks. Through these we learn that theirs is less than the ideal marriage we see from the outside. But whose story tells the truth?

To pull the film together, Fincher turned to his trusted team of professionals including director of photography Jeff Cronenweth, editor Kirk Baxter and post production supervisor Peter Mavromates. Like Fincher’s previous films, Gone Girl has blazed new digital workflows and pushed new boundaries. It is the first major feature to use the RED EPIC Dragon camera, racking up 500 hours of raw footage. That’s the equivalent of 2,000,000 feet of 35mm film. Much of the post, including many of the visual effects, were handled in-house.

df_gg_1Kirk Baxter co-edited David Fincher’s The Curious Case of Benjamin Button, The Social Network and The Girl with the Dragon Tattoo with Angus Wall – films that earned the duo two best editing Oscars. Gone Girl was a solo effort for Baxter, who had also cut the first two episodes of House of Cards for Fincher. This film now becomes the first major feature to have been edited using Adobe Premiere Pro CC. Industry insiders consider this Adobe’s Cold Mountain moment. That refers to when Walter Murch used an early version of Apple Final Cut Pro to edit the film Cold Mountain, instantly raising the application’s awareness among the editing community as a viable tool for long-form post production. Now it’s Adobe’s turn.

In my conversation with Kirk Baxter, he revealed, “In between features, I edit commercials, like many other film editors. I had been cutting with Premiere Pro for about ten months before David invited me to edit Gone Girl. The production company made the decision to use Premiere Pro, because of its integration with After Effects, which was used extensively on the previous films. The Adobe suite works well for their goal to bring as much of the post in-house as possible. So, I was very comfortable with Premiere Pro when we started this film.”

It all starts with dailies

df_gg_3Tyler Nelson, assistant editor, explained the workflow, “The RED EPIC Dragon cameras shot 6K frames (6144 x 3072), but the shots were all framed for a 5K center extraction (5120 x 2133). This overshoot allowed reframing and stabilization. The .r3d files from the camera cards were ingested into a FotoKem nextLAB unit, which was used to transcode edit media, viewing dailies, archive the media to LTO data tape and transfer to shuttle drives. For offline editing, we created down-sampled ProRes 422 (LT) QuickTime media, sized at 2304 x 1152, which corresponded to the full 6K frame. The Premiere Pro sequences were set to 1920 x 800 for a 2.40:1 aspect. This size corresponded to the same 5K center extraction within the 6K camera files. By editing with the larger ProRes files inside of this timeline space, Kirk was only viewing the center extraction, but had the same relative overshoot area to enable easy repositioning in all four directions. In addition, we also uploaded dailies to the PIX system for everyone to review footage while on location. PIX also lets you include metadata for each shot, including lens choice and camera settings, such as color temperature and exposure index.”

Kirk Baxter has a very specific way that he likes to tackle dailies. He said, “I typically start in reverse order. David tends to hone in on the performance with each successive take until he feels he’s got it. He’s not like other directors that may ask for completely different deliveries from the actors with each take. With David, the last take might not be the best, but it’s the best starting point from which to judge the other takes. Once I go through a master shot, I’ll cut it up at the points where I feel the edits will be made. Then I’ll have the assistants repeat these edit points on all takes and string out the line readings back-to-back, so that the auditioning process is more accurate. David is very gifted at blocking and staging, so it’s rare that you don’t use an angle that was shot for a scene. I’ll then go through this sequence and lift my selected takes for each line reading up to a higher track on the timeline. My assistants take the selects and assemble a sequence of all the angles in scene order. Once it’s hyper-organized, I’ll send it to David via PIX and get his feedback. After that, I’ll cut the scene. David stays in close contact with me as he’s shooting. He wants to see a scene cut together before he strikes a set or releases an actor.”

Telling the story

df_gg_5The director’s cut is often where the story gets changed from what works on paper to what makes a better film. Baxter elaborated, “When David starts a film, the script has been thoroughly vetted, so typically there isn’t a lot of radical story re-arrangement in the cutting room. As editors, we got a lot of credit for the style of intercutting used in The Social Network, but truthfully that was largely in the script. The dialogue was tight and very integral to the flow, so we really couldn’t deviate a lot. I’ve always found the assembly the toughest part, due to the volume and the pressure of the ticking clock. Trying to stay on pace with the shoot involves some long days. The shooting schedule was 106 days and I had my first cut ready about two weeks after the production wrapped. A director gets around ten weeks for a director’s cut and with some directors, you are almost starting from scratch once the director arrives. With David, most of that ten week period involves adding finesse and polish, because we have done so much of the workload during the shoot.”

df_gg_9He continued, “The first act of Gone Girl uses a lot of flashbacks to tell Amy’s side of the story and with these, we deviated a touch from the script. We dropped a couple of scenes to help speed things along and reduced the back and forth of the two timelines by grouping flashbacks together, so that we didn’t keep interrupting the present day; but, it’s mostly executed as scripted. There was one scene towards the end that I didn’t feel was in the right place. I kept trying to move it, without success. I ended up taking another pass at the cut of the scene. Once we had the emotion right in the cut, the scene felt like it was in the right place, which is where it was written to be.”

“The hardest scenes to cut are the emotional scenes, because David simplifies the shooting. You can’t hide in dynamic motion. More complex scenes are actually easier to cut and certainly quite fun. About an hour into the film is the ‘cool girls’ scene, which rapidly answers lots of question marks that come before it. The scene runs about eight minutes long and is made up of about 200 set-ups. It’s a visual feast that should be hard to put together, but was actually dessert from start to finish, because David thought it through and supplied all the exact pieces to the puzzle.”

Music that builds tension

df_gg_6Composers Trent Reznor and Atticus Ross of Nine Inch Nails fame are another set of Fincher regulars. Reznor and Ross have typically supplied Baxter with an album of preliminary themes scored with key scenes in mind. These are used in the edit and then later enhanced by the composers with the final score at the time of the mix. Baxter explained, “On Gone Girl we received their music a bit later than usual, because they were touring at the time. When it did arrive, though, it was fabulous. Trent and Atticus are very good at nailing the feeling of a film like this. You start with a piece of music that has a vibe of ‘this is a safe, loving neighborhood’ and throughout three minutes it sours to something darker, which really works.”

“The final mix is usually the first time I can relax. We mixed at Skywalker Sound and that was the first chance I really had to enjoy the film, because now I was seeing it with all the right sound design and music added. This allows me to get swallowed up in the story and see beyond my role.”

Visual effects

df_gg_7The key factor to using Premiere Pro CC was its integration with After Effects CC via Adobe’s Dynamic Link feature. Kirk Baxter explained how he uses this feature, “Gone Girl doesn’t seem like a heavy visual effects film, but there are quite a lot of invisible effects. First of all, I tend to do a lot of invisible split screens. In a two-shot, I’ll often use a different performance for each actor. Roughly one-third of the timeline contains such shots. About two-thirds of the timeline has been stabilized or reframed. Normally, this type of in-house effects work is handled by the assistants who are using After Effects. Those shots are replaced in my sequence with an After Effects composition. As they make changes, my timeline is updated.”

“There are other types of visual effects, as well. David will take exteriors and do sky replacements, add flares, signage, trees, snow, breath, etc. The shot of Amy sinking in the water, which has been used in the trailers, is an effects composite. That’s better than trying to do multiple takes with the real actress by drowning her in cold water. Her hair and the water elements were created by Digital Domain. This is also a story about the media frenzy that grows around the mystery, which meant a lot of TV and computer screen comps. That content is as critical in the timing of a scene as the actors who are interacting with it.”

Tyler Nelson added his take on this, “A total of four assistants worked with Kirk on these in-house effects. We were using the same ProRes editing files to create the composites. In order to keep the system performance high, we would render these composites for Kirk’s timeline, instead of using unrendered After Effects composites. Once a shot was finalized, then we would go back to the 6K .r3d files and create the final composite at full resolution. The beauty of doing this all internally is that you have a team of people who really care about the quality of the project as much as everyone else. Plus the entire process becomes that much more interactive. We pushed each other to make everything as good as it could possibly be.”

Optimization and finishing

df_gg_2A custom pipeline was established to make the process efficient. This was spearheaded by post production consultant Jeff Brue, CTO of Open Drives. The front end storage for all active editorial files was a 36TB RAID-protected storage network built with SSDs. A second RAID built with standard HDDs was used for the .r3d camera files and visual effects elements. The hardware included a mix of HP and Apple workstations running with NVIDIA K6000 or K5200 GPU cards. Use of the NVIDIA cards was critical to permit as much real-time performance as possible doing the edit. GPU performance was also a key factor in the de-Bayering of .r3d files, since the team didn’t use any of the RED Rocket accelerator cards in their pipeline. The Macs were primarily used for the offline edit, while the PCs tackled the visual effects and media processing tasks.

In order to keep the Premiere Pro projects manageable, the team broke down the film into eight reels with a separate project file per reel. Each project contained roughly 1,500 to 2,000 files. In addition to Dynamic Linking of After Effects compositions, most of the clips were multi-camera clips, as Fincher typically shoots scenes with two or more cameras for simultaneous coverage. This massive amount of media could have potentially been a huge stumbling block, but Brue worked closely with Adobe to optimize system performance over the life of the project. For example, project load times dropped from about six to eight minutes at the start down to 90 seconds at best towards the end.

The final conform and color grading was handled by Light Iron on their Quantel Pablo Rio system run by colorist Ian Vertovec. The Rio was also configured with NVIDIA Tesla cards to facilitate this 6K pipeline. Nelson explained, “In order to track everything I used a custom Filemaker Pro database as the codebook for the film. This contained all the attributes for each and every shot. By using an EDL in conjunction with the codebook, it was possible to access any shot from the server. Since we were doing a lot of the effects in-house, we essentially ‘pre-conformed’ the reels and then turned those elements over to Light Iron for the final conform. All shots were sent over as 6K DPX frames, which were cropped to 5K during the DI in the Pablo. We also handled the color management of the RED files. Production shot these with the camera color metadata set to RedColor3, RedGamma3 and an exposure index of 800. That’s what we offlined with. These were then switched to RedLogFilm gamma when the DPX files were rendered for Light Iron. If, during the grade, it was decided that one of the raw settings needed to be adjusted for a few shots, then we would change the color settings and re-render a new version for them.” The final mastering was in 4K for theatrical distribution.

df_gg_8As with his previous films, director David Fincher has not only told a great story in Gone Girl, but set new standards in digital post production workflows. Seeking to retain creative control without breaking the bank, Fincher has pushed to handle as many services in-house as possible. His team has made effective use of After Effects for some time now, but the new Creative Cloud tools with Premiere Pro CC as the hub, bring the power of this suite to the forefront. Fortunately, team Fincher has been very eager to work with Adobe on product advances, many of which are evident in the new application versions previewed by Adobe at IBC in Amsterdam. With a film as complex as Gone Girl, it’s clear that Adobe Premiere Pro CC is ready for the big leagues.

Kirk Baxter closed our conversation with these final thoughts about the experience. He said, “It was a joy from start to finish making this film with David. Both he and Cean [Chaffin, producer and David Fincher’s wife] create such a tight knit post production team that you fall into an illusion that you’re making the film for yourselves. It’s almost a sad day when it’s released and belongs to everyone else.”

Originally written for Digital Video magazine / CreativePlanetNetwork.

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Needless to say, Gone Girl has received quite a lot of press. Here are just a few additional discussions of the workflow:

Adobe panel discussion with the post team

PostPerspective

FxGuide

HDVideoPro

IndieWire

IndieWire blog

ICG Magazine

RedUser

Tony Zhou’s Vimeo take on Fincher 

©2014 Oliver Peters

The FCP X – RED – Resolve Dance

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I recently worked on a short 10 minute teaser video for a potential longer film project. It was shot with a RED One camera, so it was a great test for the RED workflow and roundtrips using Apple Final Cut Pro 10.1.2/10.1.3 and DaVinci Resolve 11.

Starting the edit

As with any production, the first step is to properly back up and verify the data from the camera and sound cards. These files should go to redundant drives that are parked on the shelf for safe keeping. After this has been done, now you can copy the media to the editorial drives. In this case, I was using a LaCie RAID-5 array. Each day’s media was placed in a folder and divided into subfolders for RED, audio and other cameras, like a few 5D shots.

df_fcpx-red-resolve_4Since I was using FCP X and its RED and proxy workflows, I opted not to use REDCINE-X Pro as part of this process. In fact, the Mac Pro also didn’t have any RED Rocket accelerator card installed either, as I’ve seen conflicts with FCP X and RED transcodes when the RED Rocket card was installed. After the files were copied to the editorial drives, they were imported into an FCP X event, with media left in its original location. In the import setting, the option to transcode proxy media was enabled, which continues in the background while you start to work with the RED files directly. The camera files are 4K 16×9 .r3d files, so FCP X transcodes these to half-sized ProRes Proxy media.

df_fcpx-red-resolve_1Audio was recorded as double-system sound using a Sound Devices recorder. The audio files were 2-channel broadcast WAV files using slates for syncing. There was no in-camera audio and no common timecode. I was working with a couple of assistant editors, so I had them sync each clip manually. Instead of using FCP X’s synchronized clips, I had them alter each master clip using the “open in timeline” command. This lets you edit the audio directly to the video as a connected clip within the master clip. Once done, your master clip contains synced audio and video.  It functions just like a master clip with in-camera audio – almost (more on that later).df_fcpx-red-resolve_9

All synced clips were relabeled with a camera, scene and take designation, as well as adding this info to the camera, scene and take columns. Lastly, script notes were added to the notes column based on the script supervisor’s reports.

Transcodes

df_fcpx-red-resolve_6Since the post schedule wasn’t super-tight, I was able to let the transcodes finish overnight, as needed. Once this is done, you can switch FCP X to working with proxies and all the media will be there. The toggle between proxy and/or optimized-original media is seamless and FCP X takes care of properly changing all sizing information. For example, the project is 4K media in a 1080p timeline. FCP X’s spatial conform downscales the 4K media, but then when you toggle to proxy, it has to make the corresponding adjustments to media that is now half-sized. Likewise any blow-ups or reframing that you do also have to match in both modes.

df_fcpx-red-resolve_2The built-in proxy/optimized-original workflow provides you with offline/online editing phases right within the same system. Proxies for fast and efficient editing. Original or high-resolution transcodes for finishing. To keep the process fast and initially true to color decisions made on set, no adjustments were made to the RED files. FCP X does let you alter the camera raw color metadata from inside the application, but there’s no real reason to do this for offline editing files. That can be deferred until it’s time to do color correction. So during the edit, you see what the DoP shot as you view the RED files or the transcoded proxies.

df_fcpx-red-resolve_3We did hit one bad camera load. This might have been due to either a bad RED drive or possibly excessive humidity at that location. No matter what the reason, the result was a set of corrupt RED clips. We didn’t initially realize this in FCP X, and so, hit clips that caused frequent crashes. Once I narrowed it down to the load from that one location, I decided to delete these clips. For that group of shots, I used REDCINE-X Pro to transcode the files. I adjusted the color for a flatter, neutral profile (for later color correction) and transcoded full-resolution debayered 1080p ProRes 4444 files. We considered these as the new camera masters for those clips. Even there, REDCINE-X Pro crashed on a few of the clips, but I still had enough to make a scene out of it.

Editing

The first editing step is culling down the footage in FCP X. I do a first pass rejecting all bogus shots, like short clips of the floor, a bad slate, etc. Set the event browser to “hide rejected”. Next I review the footage based on script notes, looking at the “circle takes” first, plus picking a few alternates if I have a different opinion. I will mark these as Favorites. As I do this, I’ll select the whole take and not just a portion, since I want to see the whole take.

Once I start editing, I switch the event browser to “show favorites”. In the list view, I’ll sort the event by the scene column, which now gives me a quick roadmap of all possible good clips in the order of the script. During editing, I cut mainly using the primary storyline to build up the piece. This includes all overlapping audio, composites, titles and so on. Cutting proceeds until the picture is locked. Once I’m ready to move on to color correction, I export a project XML in the FCPXML format.

Resolve

df_fcpx-red-resolve_7I used the first release version (not beta) of DaVinci Resolve 11 Lite to do this grade. My intention was to roundtrip it back to FCP X and not to use Resolve as a finishing tool, since I had a number of keys and composites that were easier done in FCP X than Resolve. Furthermore, when I brought the project into Resolve, the picture was right, but all of the audio was bogus – wrong takes, wrong syncing, etc. I traced this down to my initial “open in timeline” syncing, which I’ll explaining in a bit. Anyway, my focus in Resolve was only grading and so audio wasn’t important for what I was doing. I simply disabled it.

Importing the FCPXML file into a fresh Resolve 11 project couldn’t have been easier. It instantly linked the RED, 5D and transcoded ProRes 4444 files and established an accurate timeline for my picture cut. All resizing was accurately translated. This means that in my FCP X timeline, when I blew up a shot to 120% (which is a blow-up of the 1080p image that was downscaled from the 4K source), Resolve knew to take the corresponding crop from the full 4K image to equal this framing of the shot without losing resolution.

The one video gotcha I hit was with the FCP X timeline layout. FCP X is one of the only NLEs that lets you place video BELOW what any other software would consider to be the V1 track – that’s the primary storyline. Some of my green screen composite shots were of a simulated newscast inserted on a TV set hanging on a wall in the primary scene. I decided to place the 5 or 6 layers that made up this composite underneath the primary storyline. All fine inside FCP X, however, in Resolve, it has to interpret the lowest video element as V1, thus shifting everything else up accordingly. As a result the, bulk of the video was on V6 or V7 and audio was equally shifted in the other direction. This results in a lot of vertical timeline scrolling, since Resolve’s smallest track height is still larger than most.

df_fcpx-red-resolve_8Resolve, of course, is a killer grading tool that handles RED media well. My grading approach is to balance out the RED shots in the first node. Resolve lets you adjust the camera raw metadata settings for each individual clip, if you need to. Then in node 2, I’ll do most of my primary grading. After that, I’ll add nodes for selective color adjustments, masks, vignettes and so on. Resolve’s playback settings can be adjusted to throttle back the debayer resolution on playback for closer-to-real-time performance with RED media. This is especially important, when you aren’t running the fastest drives, fastest GPU cards nor using a RED Rocket card.

To output the result, I switched over to Resolve’s Deliver tab and selected the FCP X easy set-up. Select handle length, browse for a target folder and run. Resolve is a very fast renderer, even with GPU-based RED debayering, so output wasn’t long for the 130 clips that made up this short. The resulting media was 1080p ProResHQ with an additional 3 seconds per clip on either side of the timeline cut – all with baked in color correction. The target folder also contains a new FCPXML that corresponds to the Resolve timeline with proper links to the new media files.

Roundtrip back into FCP X

Back in FCP X, I make sure I’ve turned off the import preference to transcode proxy media and that my toggle is set back to original/optimized media. Find the new FCPXML file from Resolve and import it. This will create a new event containing a new FCP X project (edited sequence), but with media linked to the Resolve render files. Audio is still an issue, for now.

There is one interesting picture glitch, which I believe is a bug in the FCPXML metadata. In the offline edit, using RED or proxy media, spatial conform is enabled and set to “fit”. That scales the 4K file to a 1080p timeline. In the sequence back from Resolve, I noticed the timeline still had yellow render bars. When I switched the spatial conform setting on a clip to “none”, the render bar over it went away, but the clip blew up much larger, as if it was trying to show a native 4K image at 1:1. Except, that this was now 1080 media and NOT 4K. Apparently this resizing metadata is incorrectly held in the FCPXML file and there doesn’t appear to be any way to correct this. The workaround is to simply let it render, which didn’t seem to hurt the image quality as far as I could tell.

Audio

Now to an explanation of the audio issue. FCP X master clips are NOT like any other master clips in other NLEs, including FCP 7. X’s master clips are simply containers for audio and video essence and, in that way, are not unlike compound clips. Therefore, you can edit, add and/or alter – even destructively – any material inside a master clip when you use the “open in timeline” function. You have to be careful. That appears to be the root of the XML translation issue and the audio. Of course, it all works fine WITHIN the closed FCP X environment!

Here’s the workaround. Start in FCP X. In the offline edited sequence (locked rough cut) and the sequence from Resolve, detach all audio. Delete audio from the Resolve sequence. Copy and paste the audio from the rough cut to the Resolve sequence. If you’ve done this correctly it will all be properly synced. Next, you have to get around the container issue in order to access the correct WAV files. This is done simply by highlighting the connected audio clip(s) and using the “break apart clip items” command. That’s the same command used to break apart compound clips into their component source clips. Now you’ll have the original WAV file audio and not the master clip from the camera.

df_fcpx-red-resolve_11At this stage I still encountered export issues. If your audio mixing engineer wants an OMF for an older Pro Tools unit, then you have to go through FCP 7 (via an Xto7 translation) to create the OMF file. I’ve done this tons of time before, but for whatever reason on this project, the result was not useable. An alternative approach is to use Resolve to convert the FCPXML into XML, which can then be imported into FCP 7. This worked for an accurate translation, except that the Resolve export altered all stereo and multi-channel audio tracks into a single mono track. Therefore, a Resolve translation was also a fail. At this point in time, I have to say that a proper OMF export from FCP X-edited material is no longer an option or at least unreliable at best.

df_fcpx-red-resolve_10This leaves you with two options. If your mixing engineer uses Apple Logic Pro X, then that appears to correctly import and convert the native FCPXML file. If your mixer uses Pro Tools (a more likely scenario) then newer versions will read AAF files. That’s the approach I took. To create an AAF, you have to export an FCPXML from the project file. Then using the X2Pro Audio Convert application, generate an AAF file with embedded and trimmed audio content. This goes to the mixer who in turn can ingest the file into Pro Tools.

Once the mix has been completed, the exported AIF or WAV file of the mix is imported into FCP X. Strip off all audio from the final version of the FCP X project and connect the clip of the final mix to the beginning of the timeline. Now you are done and ready to export deliverables.

For more on RED and FCP X workflows, check out this series of posts by Sam Mestman at MovieMaker.

Part 1   Part 2   Part 3

©2014 Oliver Peters

More 4K

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I’ve talked about 4K before (here, here and here), but I’ve recently done some more 4K jobs that have me thinking again. 4K means different things to different people and in terms of dimensions, there’s the issue of cinema 4K (4096 pixels wide) versus the UltraHD/QuadHD/4K 16:9 (whatever you want to call it) version of 4K (3840 pixels wide). That really doesn’t make a lot of difference, because these are close enough to be the same. There’s so much hype around it, though, that you really have to wonder if it’s “the Emperor’s new clothes”. (Click on any of these images for expanded views.)

First of all, 4K used as a marketing term is not a resolution, it’s a frame dimension. As such, 4K is not four times the resolution of HD. That’s a measurement of area and not resolution. True resolution is usually measured in the vertical direction based on the ability to resolve fine detail (regardless of the number of pixels) and, therefore, 4K is only twice the resolution of HD at best. 4K is also not sharpness, which is a human perception affected by many things, such as lens quality, contrast, motion and grading. It’s worth watching Mark Schubin’s excellent webinar on the topic to get a clearer understanding of this. There’s also a very good discussion among top DoPs here about 4K, lighting, high dynamic range and more.

df_4kcompare_1A lot of arguments have been made that 4K cameras using a color-pattern filter method (Bayer-style), single CMOS sensor don’t even deliver the resolution they claim. The reason is that in many designs 50% of the pixels are green versus 25% each for red and blue. Green is used for luminance, which determines detail, so you do not have a 1:1 pixel relationship between green and the stated frame resolution of the sensor. That’s in part why RED developed 5K and 6K sensors and it’s why Sony uses an 8K sensor (F65) to deliver a 4K image.

The perceived image quality is also not all about total pixels. The pixels of the sensor, called photosites, are the light-receiving elements of the sensor. There’s a loose correlation between pixel size and light sensitivity. For any given sensor of a certain physical dimension, you can design it with a lot of small pixels or with fewer, but larger, pixels. This roughly correlates to a sensor that’s of high resolution, but a smaller dynamic range (many small pixels) or one with lower resolution, but a higher dynamic range (large, but fewer pixels). Although the equation isn’t nearly this simplistic, since a lot of color science and “secret sauce” goes into optimizing a sensor’s design, you can certainly see this play out in the marketing battles between the RED and ARRI camps. In the case of the ALEXA, ARRI adds some on-the-sensor filtering, which results in a softer image that gives it a characteristic filmic quality.df_4kcompare_2

Why do you use 4K?

With 4K there are two possible avenues. The first is to shoot 4K for the purpose of reframing and repositioning within HD and 2K timelines. Reframing isn’t a new production idea. When everyone shot on film, some telecine devices, like the Rank Cintel Mark III, sported zoom boards that permitted an optical blow-up of the 35mm negative. You could zoom in for a close-up in transfer that didn’t cost you resolution. Many videographers shoot 1080 for a 720 finish, as this allows a nice margin for reframing in post. The second is to deliver a final 4K product. Obviously, if your intent is the latter, then you can’t count on the techniques of the former in post.

df_4kcompare_3When you shoot 4K for HD post, then workflow is an issue. Do you shoot everything in 4K or just the items you know you’ll want to deal with? How will this cut with HD and 2K content? That’s where it gets dicey, because some NLEs have good 4K workflows and others don’t. But it’s here that I contend you are getting less than meets the eye, so to speak.  I have run into plenty of editors who have dropped a 4K clip into an HD timeline and then blown it up, thinking that they are really cropping into the native 4K frame and maintaining resolution. Depending on the NLE and the settings used, often they are simply blowing up an HD shot. The NLE scaled the 4K to HD first and then expanded the downscaled HD image. It didn’t crop into the actual 4K native resolution. So you have to be careful. And guess what, if the blow up isn’t that extreme, it may not look much different than the crop.

df_4kcompare_4One thing to remember is that a 4K image that is scaled to fit into an HD timeline gains the benefits of oversampling. The result in HD will be very sharp and, in fact, will generally look better perceptually than the exact same image natively shot in an HD size. When you now crop into the native image, you are losing some of that oversampling effect. A 1:1 pixel relationship is the same effective image size as a 200% blow-up. Of course, it’s not the same result. When you compare the oversampled “wide shot” (4K scaled to HD) to the “close-up” (native 4K crop), the close-up will often look softer. You’ll see defects of the image, like chromatic aberration in the lens, missed critical focus and sensor noise. Instead, if you shoot a wide and then an actual close-up, that result will usually look better.

On the other hand, if you blow up the 4K-to-HD or a native HD shot, you’ll typically see a result that looks pretty good. That’s because there’s often a lot more information there than monitors or the eye can detect. In my experience, you can commonly get away with a blow-up in the range of 120% of the original image size and in some cases, as much as 150%.

To scale or not to scale

df_4K_comparison_Instant4KLet me point out that I’m not saying a native 4K shot doesn’t look good. It does, but often the associated workflow hassles aren’t worth it. For example, let’s take a typical 1080p 50” Panasonic plasma that’s often used as a client monitor in edit suites. You or your client may be sitting 7 to 10 feet away from it, which is closer than most people sit in a living room with that size of a screen. If I show a client the native image (4K at 1:1 in an HD timeline) compared with an separate HD image at the same framing, it’s unlikely that they’ll see a difference. Another test is to take two exact images – one native HD and the other 4K. Scale up the HD and crop down the 4K to match. In theory, the 4K should look better and sharper. In fact, sitting back on the client sofa, most won’t see a difference. It’s only when they step to about 5 feet in front of the monitor that a difference is obvious and then only when looking at fine detail within the shot.

df_gh4_instant4k_smNot all scaling is equal. I’ve talked a lot about the comparison of HD scaling, but that really depends on the scaling that you use. For a quick shot, sure, use what your NLE has built in. For more critical operations, then you might want to scale images separately. DaVinci Resolve has excellent built-in scaling and lets you pick from smooth, sharp and bilinear algorithms. If you want a plug-in, then the best I’ve found is the new Red Giant Instant 4K filter. It’s a variation of their Instant HD plug-in and works in After Effects and Premiere Pro. There are a lot of quality tweaks and naturally, the better it does, the longer the render will be. Nevertheless, it offers outstanding results and in one test that I ran, it actually provided a better look within portions of the image than the native 4K shot.

df_4K_comparison-C500_smIn that case, it was a C500 shot of a woman on a park bench with a name badge. I had three identical versions of the shot (not counting the raw files) – the converted 4K ProRes4444 file, a converted 1080 ProRes4444 “proxy” file for editing and the in-camera 1080 Canon XF file. I blew up the two 1080 shots using Instant 4K and cropped the 4K shot so all were of equal framing. When I compared the native 4K shot to the expanded 1080 ProRes4444 shot, the woman’s hair was sharper in the 1080 blow-up, but the letters on the name badge were better on the original. The 1080 Canon XF blow-up was softer in both areas. I think this shows that some of the controls in the plug-in may give you superior results to the original (crisper hair); but, a blow-up suffers when you are using a worse codec, like Canon’s XF (50 Mbps 4:2:2). It’s fine for native HD, but the ProRes4444 codec has twice the chroma resolution and less compression, which makes a difference when scaling an image larger. Remember all of this pertains to viewing the image in HD.

4K deliverables

df_4K_comparison-to-1080_smSo what about working in native 4K for a 4K deliverable? That certainly has validity for high-resolution projects (films, concerts, large corporate presentations), but I’m less of a believer for television and web viewing. I’d rather have “better” pixels and not simply “more” pixels. Most of the content you watch at theaters using digital projection is 2K playback. Sometimes the master for that DCP was HD, 2K or 4K. If you are in a Sony 4K projector-equipped theater, most of the time, it’s simply the projector upscaling the content to 4K as part of the projection. Even though you may see a Sony 4K logo at the head of the trailers, you aren’t watching 4K content – definitely not, if it’s a stereo3D film. Yet, much of this looks pretty good, doesn’t it?

df_AMIRAEverything I talked about, regarding blowing up HD by up to 120% or more, still applies to 4K. Need to blow up a shot a bit in a 4K timeline? Go ahead, it will look fine. I think ARRI has proven this as well, taking films shot with the ALEXA all the way up to Imax. In fact, ARRI just announced that the AMIRA will get in-camera, on-the-fly upscaling of its image with the ability to record 4K (3840 x 2160 at up to 60fps) on the CFast 2.0 cards. They can do this, because the sensor starts with more pixels than HD or 2K. The AMIRA will expose all of the available photosites (about 3.4K sensor pixels) in what they call the “open gate” method. This image is lightly cropped to 3.2K and then scaled by a 1.2 factor, which results in UltraHD 4K recording on the same hardware. Pretty neat trick and judging by ARRI’s image quality, I’ll bet it will look very good. Doubling down on this technique, the ALEXA XT models will also be able to record ProRes media at this 3.2K size. In the case of the ALEXA, the designers have opted to leave the upscaling to post, rather than to do it in-camera.

To conclude, if you are working in 4K today, then by all means continue to do so. It’s a great medium with a lot of creative benefits. If you aren’t working in 4K, then don’t sweat it. You won’t be left behind for awhile and there are plenty of techniques to get you to the same end goal as much of the 4K production that’s going on.

Click these thumbnails for full resolution images.

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©2014 Oliver Peters

24p HD Restoration

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There’s a lot of good film content that only lives on 4×3 SD 29.97 interlaced videotape masters. Certainly in many cases you can go back and retransfer the film to give it new life, but for many small filmmakers, the associated costs put that out of reach. In general, I’m referring to projects with $0 budgets. Is there a way to get an acceptable HD product from an old Digibeta master without breaking the bank? A recent project of mine would say, yes.

How we got here

I had a rather storied history with this film. It was originally shot on 35mm negative, framed for 1.85:1, with the intent to end up with a cut negative and release prints for theatrical distribution. It was being posted around 2001 at a facility where I worked and I was involved with some of the post production, although not the original edit. At the time, synced dailies were transferred to Beta-SP with burn-in data on the top and bottom of the frame for offline editing purposes. As was common practice back then, the 24fps film negative was transferred to the interlaced video standard of 29.97fps with added 2:3 pulldown – a process that duplicates additional fields from the film frames, such that 24 film frames evenly add up to 60 video fields in the NTSC world. This is loaded into an Avid, where – depending on the system – the redundant fields are removed, or the list that goes to the negative cutter compensates for the adjustments back to a frame-accurate 24fps film cut.

df_24psdhd_5For the purpose of festival screenings, the project file was loaded into our Avid Symphony and I conformed the film at uncompressed SD resolution from the Beta-SP dailies and handled color correction. I applied a mask to hide the burn-in and ended up with a letter-boxed sequence, which was then output to Digibeta for previews and sales pitches to potential distributors. The negative went off to the negative cutter, but for a variety of reasons, that cut was never fully completed. In the two years before a distribution deal was secured, additional minor video changes were made throughout the film to end up with a revised cut, which no longer matched the negative cut.

Ultimately the distribution deal that was struck was only for international video release and nothing theatrical, which meant that rather than finishing/revising the negative cut, the most cost-effective process was to deliver a clean video master. Except, that all video source material had burn-in and the distributor required a full-height 4×3 master. Therefore, letter-boxing was out. To meet the delivery requirements, the filmmaker would have to go back to the original negative and retransfer it in a 4×3 SD format and master that to Digital Betacam. Since the negative was only partially cut and additional shots were added or changed, I went through a process of supervising the color-corrected transfer of all required 35mm film footage. Then I rebuilt the new edit timeline largely by eye-matching the new, clean footage to the old sequence. Once done and synced with the mix, a Digibeta master was created and off it went for distribution.

What goes around comes around

After a few years in distribution, the filmmaker retrieved his master and rights to the film, with the hope of breathing a little life into it through self-distribution – DVDs, Blu-rays, Internet, etc. With the masters back in-hand, it was now a question of how best to create a new product. One thought was simply to letter-box the film (to be in the director’s desired aspect) and call it a day. Of course, that still wouldn’t be in HD, which is where I stepped back in to create a restored master that would work for HD distribution.

Obviously, if there was any budget to retransfer the film negative to HD and repeat the same conforming operation that I’d done a few years ago – except now in HD – that would have been preferable. Naturally, if you have some budget, that path will give you better results, so shop around. Unfortunately, while desktop tools for editors and color correction have become dirt-cheap in the intervening years, film-to-tape transfer and film scanning services have not – and these retain a high price tag. So if I was to create a new HD master, it had to be from the existing 4×3 NTSC interlaced Digibeta master as the starting point.

In my experience, I know that if you are going to blow-up SD to HD frame sizes, it’s best to start with a progressive and not interlaced source. That’s even more true when working with software, rather than hardware up-convertors, like Teranex. Step one was to reconstruct a correct 23.98p SD master from the 29.97i source. To do this, I captured the Digibeta master as a ProResHQ file.

Avid Media Composer to the rescue

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When you talk about software tools that are commonly available to most producers, then there are a number of applications that can correctly apply a “reverse telecine” process. There are, of course, hardware solutions from Snell and Teranex (Blackmagic Design) that do an excellent job, but I’m focusing on a DIY solution in this post. That involves deconstructing the 2:3 pulldown (also called “3:2 pulldown”) cadence of whole and split-field frames back into only whole frames, without any interlaced tearing (split-field frames). After Effects and Cinema Tools offer this feature, but they really only work well when the entire source clip is of a consistent and unbroken cadence. This film had been completed in NTSC 29.97 TV-land, so frequently at cuts, the cadence would change. In addition, there had been some digital noise reduction applied to the final master after the Avid output to tape, which further altered the cadence at some cuts. Therefore, to reconstruct the proper cadence, changes had to be made at every few cuts and, in some scenes, at every shot change. This meant slicing the master file at every required point and applying a different setting to each clip. The only software that I know of to effectively do this with is Avid Media Composer.

Start in Media Composer by creating a 29.97 NTSC 4×3 project for the original source. Import the film file there. Next, create a second 23.98 NTSC 4×3 project. Open the bin from the 29.97 project into the 23.98 project and edit the 29.97 film clip to a new 23.98 sequence. Media Composer will apply a default motion adapter to the clip (which is the entire film) in order to reconcile the 29.97 interlaced frame rate into a 23.98 progressive timeline.

Now comes the hard part. Open the Motion Effect Editor window and “promote” the effect to gain access to the advanced controls. Set the Type to “Both Fields”, Source to “Film with 2:3 Pulldown” and Output to “Progressive”. Although you can hit “Detect” and let Media Composer try to decide the right cadence, it will likely guess incorrectly on a complex file like this. Instead, under the 2:3 Pulldown tab, toggle through the cadence options until you only see whole frames when you step through the shot frame-by-frame. Move forward to the next shot(s) until you see the cadence change and you see split-field frames again. Split the video track (place an “add edit”) at that cut and step through the cadence choices again to find the right combination. Rinse and repeat for the whole film.

Due to the nature of the process, you might have a cut that itself occurs within a split-field frame. That’s usually because this was a cut in the negative and was transferred as a split-field video frame. In that situation, you will have to remove the entire frame across both audio and video. These tiny 1-frame adjustments throughout the film will slightly shorten the duration, but usually it’s not a big deal. However, the audio edit may or may not be noticeable. If it can’t simply be fixed by a short 2-frame dissolve, then usually it’s possible to shift the audio edit a little into a pause between words, where it will sound fine.

Once the entire film is done, export a new self-contained master file. Depending on codecs and options, this might require a mixdown within Avid, especially if AMA linking was used. That was the case for this project, because I started out in ProResHQ. After export, you’ll have a clean, reconstructed 23.98p 4×3 NTSC-sized (720×486) master file. Now for the blow-up to HD.

DaVinci Resolve

df_24psdhd_1_smThere are many applications and filters that can blow-up SD to HD footage, but often the results end up soft. I’ve found DaVinci Resolve to offer some of the cleanest resizing, along with very fast rendering for the final output. Resolve offers three scaling algorithms, with “Sharper” providing the crispest blow-up. The second issue is that since I wanted to restore the wider aspect, which is inherent in going from 4×3 to 16×9, this meant blowing up more than normal – enough to fit the image width and crop the top and bottom of the frame. Since Resolve has the editing tools to split clips at cuts, you have the option to change the vertical position of a frame using the tilt control. Plus, you can do this creatively on a shot-by-shot basis if you want to. This way you can optimize the shot to best fit into the 16×9 frame, rather than arbitrarily lopping off a preset amount from the top and bottom.

df_24psdhd_3_smYou actually have two options. The first is to blow up the film to a large 4×3 frame out of Resolve and then do the slicing and vertical reframing in yet another application, like FCP 7. That’s what I did originally with this project, because back then, the available version of Resolve did not offer what I felt were solid editing tools. Today, I would use the second option, which would be to do all of the reframing strictly within Resolve 11.

As always, there are some uncontrollable issues in this process. The original transfer of the film to Digibeta was done on a Rank Cintel Mark III, which is a telecine unit that used a CRT (literally an oscilloscope tube) as a light source. The images from these tubes get softer as they age and, therefore, they require periodic scheduled replacement. During the course of the transfer of the film, the lab replaced the tube, which resulted in a noticeable difference in crispness between shots done before and after the replacement. In the SD world, this didn’t appear to be a huge deal. Once I started blowing up that footage, however, it really made a difference. The crisper footage (after the tube replacement) held up to more of a blow-up than the earlier footage. In the end, I opted to only take the film to 720p (1280×720) rather than a full 1080p (1920×1080), just because I didn’t feel that the majority of the film held up well enough at 1080. Not just for the softness, but also in the level of film grain. Not ideal, but the best that can be expected under the circumstances. At 720p, it’s still quite good on Blu-ray, standard DVD or for HD over the web.

df_24psdhd_4_smTo finish the process, I dust-busted the film to fix places with obvious negative dirt (white specs in the frame) caused by the initial handling of the film negative. I used FCP X and CoreMelt’s SliceX to hide and cover negative dirt, but other options to do this include built in functions within Avid Media Composer. While 35mm film still holds a certain intangible visual charm – even in such a “manipulated” state – the process certainly makes you appreciate modern digital cameras like the ARRI ALEXA!

As an aside, I’ve done two other complete films this way, but in those cases, I was fortunate to work from 1080i masters, so no blow-up was required. One was a film transferred in its entirety from a low-contrast print, broken into reels. The second was assembled digitally and output to intermediate HDCAM-SR 23.98 masters for each reel. These were then assembled to a 1080i composite master. Aside from being in HD to start with, cadence changes only occurred at the edits between reels. This meant that it only required 5 or 6 cadence corrections to fix the entire film.

©2014 Oliver Peters

Final Cut Pro X Batch Export

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One of the “legacy” items that editors miss when switching to Final Cut Pro X is the batch export function. For instance, you might want to encode H.264 versions of numerous ProRes files from your production, in order to upload raw footage for client review. While FCP X can’t do it directly, there is a simple workaround that will give you the same results. It just takes a few steps.

df_batchex_2_smStep one. The first thing to do is to find the clips that you want to batch export. In my example images, I selected all the bread shots from a grocery store commercial. These have been grouped into a keyword collection called “bread”. Next, I have to edit these to a new sequence (FCP X project) into order to export. These can be in a random order and should include the full clips. Once the clips are in the project, export an FCPXML from that project.

df_batchex_3_smStep two. I’m going to use the free application ClipExporter to work the magic. Launch it and open the FCPXML for the sequence of bread shots. ClipExporter can be used for a number of different tasks, like creating After Effects scripts, but in this case we are using it to create QuickTime movies. Make sure that all of the other icons are not lit. If you toggle the Q icon (QuickTime) once, you will generate new self-contained files, but these might not be the format you want. If you toggle the Q twice, it will display the icon as QR, which means you are now ready to export QuickTime reference files – also something useful from the past. ClipExporter will generate a new QuickTime file (self-contained or reference) for each clip in the FCP X project. These will be copied into the target folder location that you designate.df_batchex_4_sm

df_batchex_5_smStep three. ClipExporter places each new QuickTime clip into its own subfolder, which is a bit cumbersome. Here’s a neat trick that will help. Use the Finder window’s search bar to locate all files that ends with the .mov extension. Make sure you limit the search to only your target folder and not the entire hard drive. Once the clips have been selected, copy-and-paste them to a new location or drag them directly into your encoding application. If you created reference files, copying them will go quickly and not take up additional hard drive space.

df_batchex_6_smStep four. Drop your selected clips into Compressor or whatever other encoding application you choose. (It will need to be able to read QuickTime reference movies.) Apply your settings and target destination and encode.

df_batchex_7_smStep five. Since many encoding presets typically append a suffix to the file name, you may want to alter or remove this on the newly encoded files. I use Better Rename to do this. It’s a batch utility for file name manipulation.

There you go – five easy steps (less if you skip some of the optional tasks) to restore batch exports to FCP X.

©2014 Oliver Peters