
The 4K buzz seems to be steam-rolling the industry just like stereo3D before it. It’s too early to tell whether it will be an immediate issue for editors or not, since 4K delivery requirements are few and far between. Nevertheless, camera and TV-set manufacturers are building important parts of the pipeline. RED Digital Cinema is leading the way with a post workflow that’s both proven and relatively accessible on any budget. A number of NLEs support editing and effects in 4K, including Avid DS, Autodesk Smoke, Adobe Premiere Pro, Apple Final Cut Pro X, Grass Valley EDIUS and Sony Vegas Pro.
Although many of these support native cutting with RED 4K media, I’m still a strong believer in the traditional offline-to-online editing workflow. In this post I will briefly outline how to use Avid Media Composer and Apple FCP X for a cost-effective 4K post pipeline. One can certainly start and finish a RED-originated project in FCP X or Premiere Pro for that matter, but Media Composer is still the preferred creative tool for many editing pros. Likewise, FCP X is a viable finishing tool. I realize that statement will raise a few eyebrows, but hear me out. Video passing through Final Cut is very pristine, it supports the various flavors of 2K and 4K formats and there’s a huge and developing ecosystem of highly-inventive effects and transitions. This combination is a great opportunity to think outside of the box.
Offline editing with Avid Media Composer
Avid has supported native RED files for several versions, but Media Composer is not resolution independent. This means RED’s 4K (or 5K) images are downsampled to 1080p and reformatted (cropped or letterboxed) to fit into the 16:9 frame. When you shoot with a RED camera, you should ideally record in one of their 4K 16:9 sizes. The native .r3d files can be brought into Media Composer using the “Link to AMA File(s)” function. Although you can edit directly with AMA-linked files, the preferred method is to use this as a “first step”. That means, you should use AMA to cull your footage down to the selected takes and then transcode the remainder when you start to fine tune your cut.
Avid’s media creation settings are the place to adjust the RED debayer parameters. Media Composer supports the RED Rocket card for accelerated rendering, but without it, Media Composer can still provide reasonable speed in software-only transcoding. Set the debayer quality to 1/4 or 1/8, and transcoding 4K clips to Avid DNxHD36 for offline editing will be closer to real-time on a fast machine, like an 8-core Mac Pro. This resolution is adequate for making your creative decisions.
When the cut is locked, export an AAF file for the edited sequence. Media should be linked (not embedded) and the AAF Edit Protocol setting should be enabled. In this workflow, I will assume that audio post is being handled by an audio editor/mixer running a DAW, such as Pro Tools, so I’ll skip any discussion of audio. That would be exported using standard AAF or OMF workflows for audio post. Note that all effects should be removed from your sequence before generating the AAF file, since they won’t be translated in the next steps. This includes any nested clips, collapsed tracks and speed ramps, which are notorious culprits in any timeline translation.
Color grading with DaVinci Resolve
Blackmagic Design’s DaVinci Resolve 9 is our next step. You’ll need the full, paid version (software-only) for bigger-than-HD output. After launching Resolve, import the Avid AAF file from Resolve’s conform tab. Make sure you check “link to camera files” so that Resolve connects to the original .r3d media and not the Avid DNxHD transcodes. Resolve will import the sequence, connect to the media and generate a new timeline that matches the sequence exported from Media Composer. Make sure the project is set for the desired 4K format.
Next, open the Resolve project settings and adjust the camera raw values to the proper RED settings. Then make sure the individual clips are set to “project” in their camera settings tab. You can either use the original camera metadata or adjust all clips to a new value in the project settings pane. Once this is done, you are ready to grade the timeline as with any other production. Resolve uses a very good scaling algorithm, so if the RED files were framed with the intent of resizing and repositioning (for example, 5K files that are to be cropped for the ideal framing within a 4K timeline), then it’s best to make that adjustment within the Resolve timeline.
Once you’ve completed the grade, set up the render. Choose the FCP XML easy set-up and alter the output frame size to the 4K format you are using. Start the render job. Resolve 9 renders quite quickly, so even without a RED Rocket card, I found that 4K ProRes HQ or 4444 rendering, using full-resolution debayering, was completed in about a 6:1 ratio to running time on my Mac Pro. When the renders are done, export the FCP XML (for FCP X) from the conform tab. I found I had to use an older version of this new XML format, even though I was running FCP X 10.0.7. It was unable to read the newest version that Resolve had exported.
Online with Apple Final Cut Pro X
The last step is finishing. Import the Resolve-generated XML file, which will in turn create the necessary FCP Event (media linked to the 4K ProRes files rendered from Resolve) and a timeline for the edited sequence. Make sure the sequence (Project) settings match your desired 4K format. Import and sync the stereo or surround audio mix (generated by the audio editor/mixer) and rebuild any effects, titles, transitions and fast/slo-mo speed effects. Once everything is completed, use FCP X’s share menu to export your deliverables.
©2013 Oliver Peters







“As an editor, I work in much the same way with Tony as I do with other directors. I try to understand the vision of the film they’re trying to make, in big ways and small. I think editors in general are probably pretty good listeners. If we can truly understand a director’s vision on a deep level and embrace it, then we have a real compass that can navigate us through the editorial process. I’ve certainly known Tony longer than any other director I’ve ever worked with or ever will, so there is undoubtedly a short hand to that sort of understanding, but essentially the process is the same.”
Multiple sequences – FCP editors like working with multiple, tabbed sequences in the timeline window and find this lacking in Media Composer. In fact, it’s there, just not in the same way. Under the pulldown menu in the upper right corner of the record window (Canvas in FCP parlance), Media Composer editors have quick access to any previously opened sequence. Although only one is displayed in the timeline at any given time, you can quickly switch to another sequence by selecting it in this menu.
Displaying source waveforms and sequences clips – In FCP 7 or earlier, having tabbed sequences makes it easy to use a section of one sequence as a source to paste into another sequence. In addition, when reviewing audio-only clips, the waveform is displayed in the Viewer to easily mark in and out points based on the waveform. A similar feature exists in Media Composer. At the lower left corner of the timeline window is a toggle icon, which switches the window display between the source (Viewer) and record (Canvas) timelines. To use a sequence as an edit source, simply drag it from the bin into the source window. Then toggle the source/record icon to display the source’s timeline. The playhead bar or current timeline indicator will be bright green whenever you are working in the source timeline. If you have an audio-only clip, doing the same and enabling waveforms will display the source clip track with its corresponding waveform pattern.
Multiple projects – Another FCP favorite is the ability to have more than one project open at once. The Media Composer equivalent to this is Open Bin. This enables the editor to access any bin from any other project. Opening bins from other projects gives you full access to the master clips and associated metadata. In turn, that information is tracked as part of your current project going forward. Media Composer’s Find command is also active with these other bins.
Oversized images – Media Composer has traditionally been locked into standard broadcast NTSC, PAL and HD frame sizes. When it comes to dealing with higher-resolution images, Media Composer offers two solutions: the built-in Avid Pan & Zoom plug-in and Avid FX. Both of these function nicely for doing camera-style moves on bigger-than-TV-raster images. If you want to preserve the resolution of a 3500 x 3500 pixel still photo, while zooming into it, Media Composer is perfectly capable of accomplishing the task. Edit a placeholder clip to the timeline, apply the Pan & Zoom filter to it. From the effects editor, access the high-res file, which will replace the placeholder content. Finally, program your keyframes for the move.
AvidFX – One of the “stealth” features of Media Composer is that it comes with Avid FX, an OEM version of Boris RED designed to integrate into Avid host systems. Apply an AvidFX filter to a clip and launch the separate interface to open a complete effects, titling and compositing environment. Not only can you apply effects to your timeline clips or import and manipulate high-res stills, but you can also import other QuickTime movies from your drives that aren’t part of the Avid project. AvidFX also includes its own set of Boris Continuum Complete and Final Effects Complete filters, even if the BCC or FEC products haven’t been separately installed into Media Composer.
Open timeline/frame rate mix and match – FCP is known for dealing with a wide range of formats, but in fact, Media Composer is superb at mixing frame rates and sizes in real-time. For example, freely mix SD and HD clips on an HD timeline and Media Composer will automatically scale up the SD clips. However, you can quickly change the format of the project to SD and Media Composer takes care of applying the opposite scale parameters, so that SD clips appear normal and HD clips are scaled down to fit into the SD raster. In addition, codecs and frame rates can also be mixed within the same sequence. Put 23.976fps clips into a 29.97fps timeline or vice versa and Avid’s FluidMotion technology takes care of cadence and frame rate adjustments for seamless playback and blending in real-time.
Smart Tool – Easy editing within the timeline by using the mouse or keystrokes has long been a hallmark of FCP. Avid’s product designers sought to counter this (and add their own twists) with the introduction of Smart Tool. When enabled, it offers contextual timeline editing. Hovering the curser over the top or bottom of a clip – or close to the top, bottom, right, center or left side of a cut – will change the function you can perform when clicking and dragging with the mouse. It takes a while to get comfortable with Smart Tool and many veteran Avid editors aren’t big fans. Nevertheless, editors who’ve adapted to it can quickly re-arrange clips and trim edit points in much the same way as FCP editors use the Selection and Rolling Edit keys.
Perforation-slipping – Edit accuracy on either NLE is limited to a one-frame interval, but a little known feature is the ability to trim the sync of audio to less than one video frame. Few editors know how to do that in either application. While FCP allows sample-based adjustments, Media Composer does this with a technique borrowed from its film editing heritage. Start by creating your project as a film project (even for non-film media), which enables the Slip Perf Left/Right commands. Standard 35mm film uses four sprocket holes (perforations) per frame, which equates to quarter-frame accuracy. Using the Slip Perf commands is a great way to adjust the accuracy of sound sync on subclips in double-system recordings, such as when an HDSLR camera and separate audio recorder were used.
AMA – The first instinct of many young editors is to start a project by dragging media from anywhere on the hard drives into the project and start editing. FCP facilitated this style of working, whereas Media Composer traditionally was structured with a rigid routine for importing and capturing media. Avid Media Access (AMA) is a solution to bring more of that “drag-and-drop” world into Media Composer. You may either Link to AMA File(s) or Link to AMA Volume(s), depending on whether you wish to mount entire drives or partitions, such as with P2 cards, or simply want to import individual files. Conceived as a process similar to FCP’s Log and Transfer, AMA also lets you edit directly from native files. The recommended workflow is a hybrid approach: load your clips via AMA; cull down selects; and then transcode just those clips into optimized Avid media. In either case, you have immediate access to native media, as long as there’s an AMA camera plug-in for it. This includes RED, Canon XF, P2, XDCAM and most QuickTime-based camera file formats, such as ARRI ALEXA and Canon HDSLRs.
ProRes – Ever since Apple introduced the ProRes codec family, it has been gaining share as an acquisition, edit and delivery format – thanks to the ubiquitous nature of QuickTime. It has become ingrained into many FCP editing workflows, so media compatibility is important in considering a switch. Media Composer version 6 now supports native ProRes media. Apple ProRes QuickTime files can be imported on both Mac and PC versions, but in addition, Mac Media Composers can render and export natively to ProRes, as well. When the files are ingested using the standard (non-AMA) method, the ProRes files are “fast imported”. This means the media is copied without conversion and the container is rewrapped from a .mov to .mxf format. Avid takes care of maintaining proper levels without the dreaded QuickTime gamma shift. For FCP editors moving to Media Composer, this means easy access to existing media files from past projects using one of two import methods – native ProRes import or AMA linking.