
The last step in commercial music production is mastering. Typically this involves making a recording sound as good as it possibly can through the application of equalization and multiband compression. In the case of LPs and CDs (remember those?), this also includes setting up the flow from one tune to the next and balancing out levels so the entire product has a consistent sound. Video post has a similar phase, which has historically been in the hands of the finishing or online editor.
That sounds so sweet
The most direct comparison between the last video finishing steps and commercial music mastering is how filters are applied in order to properly compress the audio track and to bring video levels within legal broadcast specs. When I edit projects in Apple Final Cut Pro 7 and do my own mixes, I frequently use Soundtrack Pro as the place to polish the audio. My STP mixing strategy employs tracks that route into one or more subgroup buses and then a master output bus. Four to eight tracks of content in FCP might become twenty tracks in STP. Voice-over, sync-sound, SFX and music elements get spread over more tracks and routed to appropriate subgroups. These subgroups then flow into the master bus. This gives me the flexibility to apply specific filters to a track and have fine control over the audio.
I’ll usually apply a compressor across the master bus to tame any peaks and beef up the mix. My settings involve a low compression ratio and a hard limit at -10dB. The objective is to keep the mix levels reasonable so as to preserve dynamic range. I don’t want to slam the meters and drive the signal hard into compression. Even when I do the complete mix in Final Cut, I will still use Soundtrack Pro simply to compress the composite mix, because I prefer its filters. When you set the reference tone to -20dB, then these levels will match the nominal levels for most digital VTRs. If you are laying off to an analog format, such as Betacam-SP, set your reference tone to -12dB and match the input on the deck to 0VU.
Getting ready for broadcast
The video equivalent is the broadcast safe limiting filter. Most NLEs have one, including Avid Media Composer and both old and new versions of Final Cut. This should normally be the last filter in the chain of effects. It’s often best to apply it to a self-contained file in FCP 7, a higher track in Media Composer or a compound clip in FCP X. Broadcast specs will vary with the network or station receiving your files or tapes, so check first. It’s worth noting that many popular effects, like glow dissolves, violate these parameters. You want the maximum luminance levels (white peaks) to be limited to 100 IRE and chrominance to not exceed 110, 115 or 120, depending on the specs of the broadcaster to whom you are delivering. In short, the chroma should stay within the outer ring of a vectorscope. I usually turn off any RGB limiting to avoid artifacts.
It’s often a good idea to reduce the overall video levels by about five percent prior to the application of a broadcast safe filter, simply so you don’t clip too harshly. That’s the same principle as I’ve applied to the audio mix. For example, I will often first apply a color correction filter to slightly lower the luminance level and reduce chroma. In addition, I’ll frequently use a desaturate highlights or lows filter. As you raise midrange or highlight levels and crush shadows during color correction, the chroma is also driven higher and/or lower accordingly. Red, blues and yellows are most susceptible, so it’s a good idea to tone down chroma saturation above 90 IRE and below 20 IRE. Most of these filters let you feather the transition range and the percentage of desaturation, so play with the settings to get the most subtle result. This keeps the overall image vibrant, but still legal.

Let me interject at this point that what you pay for when using a music mastering specialist are the “ears” (and brain) of the engineer and their premium monitoring environment. This should be equally true of a video finishing environment. Without proper audio and video monitoring, it’s impossible to tell whether the adjustments being made are correct. Accurate speakers, calibrated broadcast video monitors and video scopes are essential tools. Having said that though, software scopes and modern computer displays aren’t completely inaccurate. For example, the software scopes in FCP X and Apple’s ColorSync technology are quite good. Tools like Blackmagic Design Ultrascope, HP Dreamcolor or Apple Cinema Displays do provide accurate monitoring in lower-cost situations. I’ve compared the FCP X Viewer on an iMac to the output displayed on a broadcast monitor fed by an AJA IoXT. I find that both match surprisingly well. Ultimately it gets down to trusting an editor who knows how to get the best out of any given system.
Navigating the formats
Editors work in a multi-standard world. I frequently cut HD spots that run as downconverted SD content for broadcast, as well as at a higher HD resolution for the internet. The best production and post “lingua franca” format today is 1080p/23.976. This format fits a sweet spot for the internet, Blu-ray, DVD and modern LCD and plasma displays. It’s also readily available in just about every camera at any price range. Even if your product is only intended to be displayed as standard definition today, it’s a good idea to future-proof it by working in HD.
If you shoot, edit and master at 1080p/23.976, then you can easily convert to NTSC, 720p/59.94 or 1080i/29.97 for broadcast. The last step for many of my projects is to create deliverables from my master file. Usually this involves creating three separate broadcast files in SD and two HD formats using either ProRes or uncompressed codecs. I will also generate an internet version (without bars, tone, countdown or slate) that’s a high-quality H.264 file in the 720p/23.976 format. Either .mov or .mp4 is fine.
Adobe After Effects is my tool of choice for these broadcast conversions, because it does high-quality scaling and adds proper cadences. I follow these steps.
A) Export a self-contained 1080p/23.976 ProResHQ file from FCP 7 or X.
B) Place that into a 720×486, 29.97fps After Effects D1 composition and scale the source clip to size. Generally this will be letterboxed inside of the 4×3 frame.
C) Render an uncompressed QuickTime file, which is lower-field ordered with added 2:3 pulldown.
D) Re-import that into FCP 7 or X using a matching sequence setting, add the mixed track and format it with bars, tone, countdown and slate.
E) Export a final self-contained broadcast master file.
F) Repeat the process for each additional broadcast format.
Getting back there
Archiving is “The $64,000 Question” for today’s digital media shops. File-based mastering and archiving introduces dilemmas that didn’t exist with videotape. I recommend always exporting a final mixed master file along with a split-track, textless submaster. QuickTime files support multi-channel audio configurations, so building such a file with separate stereo stems for dialogue, sound effects and music is very easy in just about any NLE. Self-contained QuickTime movies with discrete audio channels can be exported from both FCP 7 and FCP X (using Roles).
Even if your NLE can’t export multi-channel master files, export the individual submixed elements as .wav or .aif audio files for future use. In addition to the audio track configuration, remove any titles and logos. By having these two files (master and submaster), it’s very simple to make most of the future revisions you might encounter without ever having to restore the original editorial project. Naturally, one question is which codec to use for access in the future. The preferred codec families these days are Avid DNxHD, Apple ProRes, uncompressed, OP1a MXF (XDCAM) or IMX. FCP editors will tend towards ProRes and Avid editors towards DNxHD, but uncompressed is very viable with the low cost of storage. For feature films, another option to consider would be image sequences, like a string of uncompressed TIFF or DPX files.
Whichever format you standardize on, make multiple copies. LTO data tape is considered the best storage medium, but for small files, like edited TV commercial masters, DVD-ROM, Blu-ray and XDCAM media are likely the most robust. This is especially true in the case of water damage.
The typical strategy for most small users who don’t want to invest in LTO drives is a three-pronged solution.
A) Store all camera footage, elements and masters on a RAID array for near-term editing access.
B) Back-up the same items onto at least two copies of raw SATA or SSD hard drives for longer storage.
C) Burn DVD-ROM or BD-ROM copies of edited master files, submasters, project files and elements (music, VO, graphics, etc.).
A properly polished production with audio and video levels that conform to standards is an essential aspect of delivering a professional product. Developing effective mastering and archiving procedures will protect the investment your clients have made in a production. Even better, a reliable archive routine will bring you repeat business, because it’s easy to return to the project in the future.
Originally written for DV magazine/Creative Planet/NewBay Media, LLC
©2012 Oliver Peters


Modern electronics don’t push power demands the way they did in the days of racks loaded with video gear. Most electrical circuits intended for standard office and even home use will be adequate to support the average nonlinear edit suite. If you have the ability to bring in an electrician and improve the service, then you will want a dedicated circuit (or two) for each editing room. These should be “home runs” direct from the outlets in the suite to the circuit breaker box.
Comfort is important when you’re in a room for hours on end. Make sure monitor position, desk height and the chair design are optimal. The proper height for the desk surface should be between 26” and 29” to the top. When you are seated, your eyeline should be at the top portion of the computer display. These guidelines actually mean that placing a computer monitor (with its own stand) on the raised bridge of a custom tech console forces the operator to look slightly upwards, resulting in shoulder strain. I prefer consoles with no bridges or if budget permits, adjustable ones, like those from
Controlling sound waves boils down to issues of transmission and treatment. We are talking about edit suites and not recording studio spaces, so the acoustics don’t have to be perfect. Clearly, you want the room to be as free of annoying equipment fan and air conditioner duct noise as possible. Moving storage arrays out of the suite and using a low velocity HVAC system will take care of the bulk of that. You are mainly concerned with keeping the noise from the suite from bothering neighboring offices, as well as keeping most exterior noise out while you are working. This means adopting some studio design concepts without going overboard.


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.