The best way to both save money and get a better mix is to hire an experienced location sound recordist. The hours spent fixing and cleaning poorly recorded location audio can make up a significant portion of your audio post budget. Throw in the time spent adding sound design to support weak field audio and you begin to realize that you are paying for something that could have been captured originally by a qualified sound person.

That said, we realize that many independent productions operate on a shoe- string budget and are forced to rely on friends or themselves to record production audio. Please contact us to discuss affordable solutions and strategies.

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Since the mix stage is the greatest audio post expense, you do not want the re-recording mixer cleaning up bad edits instead of mixing. When we receive your audio, the first stop will be in a lower cost Pro Tools prep room. Here our engineers will split out tracks, clean-up bad edits, do basic voluming, and add roomtones.

You can save money by doing this yourself BEFORE you export your session as an OMF or AAF file. Track splitting simply means that you do not place different types of audio on the same track. For example: Voice-over should be on its own track. Background sync should not be on the same track as any FX you have put in. Music should have its own tracks and dialog as well. Roomtone refers to the sound of the room that an interview was recorded in. A good location sound recordist always records a minute of roomtone at the end of an interview. This allows the editor to fill in the gaps created by the editing of dialog.

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Always ingest production audio digitally. These days it is rare for location recording to be done to tape – file based audio and video are more the standard. Importing is different than capturing – but the goal is the same. Unlike the old days when editors had to record tape-based footage into their system (often through analog devices that degraded the quality), today importing is stream lined and digital.

Do not delete any location audio track. If a scene was recorded to two channels in the field and the editor thinks one is completely useless, please do not get rid of it. Provide all tracks to the sound house. You’d be surprised how those "useless" tracks can become important during a mix.

Do not render any audio effects that you might have experimented with during edit -- effects like equalization, reverb, noise reduction, or time stretching programs. Your edit room is not the ideal space to be making critical decisions such as these.

Another important step is to make sure that your session has no mixed samples rates. These days, the standard for film and television audio field acquisition is 24 bit / 48 Khz – although 16 bit is acceptable. Music CDs are 16 bit / 44.1 Khz. Most composers deliver 24 bit / 48 K and indeed most networks require 24/48 for the final mix elements. We are happy to work in any bit and sample rate that your project requires.

Regarding whether you should export your audio as an OMF or AAF – we'll work with either. Premiere systems can be buggy at times – crashing when exporting one or the other formats. Again – we can work with either OMF or AAF.

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There has been much debate about whether people can really tell the difference between a bit reduced file versus a WAV file or CD (16 bit, 44.1K). No one disputes that an MP3 is a smaller file than its 16 bit, 44.1K version. But does it sacrifice quality? In my experience unless you get into MP3s that are at a higher rate (320Kbit/s instead of the more common 128Kbit/s), one can hear the difference. Of course the program material greatly determines how easy it is to detect this difference.

The bottom line is that after all the “blind” listening tests, no one has argued that the 16/44.1 file sounds inferior to the smaller MP3 or AAC files. So spend a few extra bucks and get the music as a full resolution file the way the artist intended it to be heard.

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AVID created OMF. It was a straightforward way to move audio from the AVID timeline into other manufacturers' DAWs (Pro Tools, etc.) Although buggy in the early years, OMF became a solid standard of the television and film communities. Quite a few years ago AVID introduced AAF. It is available on all current AVID systems while OMF is sometimes not. AAF contains more information than the OMF. OMF loses the volume automation and names of the tracks when exporting and importing from one application to another. AAF retains the volume automation and the track names. Most applications for audio and video will support AAF and MXF formats moving forward.


  • Go to "export your sequence" (either right-click > export, or file > export), and in the "Export As..." window, go into 'Options' to access the export settings.
  • From the "Export As" drop down menu at the top, select AAF.
  • You'll want to check the "include all audio tracks in sequence" checkbox.
  • Select 'Consolidate Media' as the export method and make sure that you select 'Embedded'.
  • Below 'Export Method' you can select handle length (we prefer 3 seconds or 90 frames) and you can choose to include your rendered audio effects or to render them right there for the export. (We generally do not want the rendered effects, but it is case by case.)
  • Make sure that all your files are the same bit and sample rate (24 or 16 bit, 48K).

Initially AAF exports had a 2 gig size limitation (which is still the case for some digital audio workstations). Starting with MediaComposer v4.0 (and NewsCutter v8.0) Avid implemented the AAF Edit Protocol which allows the exporting of AAF files larger than 2GB. This is enabled by selecting the "AAF Edit Protocol" option in the Export Settings. Since we are a Pro Tools shop, we have no issue importing larger than 2 gig AAF exports.

BOTTOM LINE: AAF works quite well generally and does NOT take a huge amount of time to create (15 to 20 minutes). If you are having problems, PLEASE don't hesitate to call us for tips and advice!


When FCP abandoned development on FCP 7, Premiere has become another player in the non-linear editing world and developed a growing community of users. Currently AAF/OMF export in Premiere is not without its bumps. PLEASE call us as audio export advice is in flux. A few suggestions that have helped our clients having issues exporting a successful AAF/OMF from Premiere are:

We still want crossfades, volumes, and 90 frame handles. Premiere doesn't like WAV files. Include panning and do not render AudioClip effects. You will most likely use 24 bit, 48K files (16 bit is fine though). Under Media, select Referenced. Media format: AIFF. Use entire file.

UPDATE: Premiere continues to improve their OMF/AAF outputs. Current system's audio drop downs now more closely resemble AVID's. Premiere now offers the option to "Embed Audio" (AVID's term -older Premiere systems called it "encapsulate".)

(Premiere offers both OMF and AAF audio export. The main difference, is that you must select "Breakout to Mono" when creating an AAF.) It makes no difference to us whether you provide an OMF or AAF file.

  • At picture lock, remove all unused (even disabled) audio clips from the tracks and organize audio for the mixer.
  • With the sequence window selected, go to File > Export > OMF.
  • On the OMF Settings screen, choose a project title, change bit size to the appropriate value (24 or 16), files are to be embedded, and trim the audio files to 90 frames.
  • Select OK and type in file name for the OMF. Save to appropriate location.

Back in the day, Final Cut Pro 7 (FCP 7) had many editors singing its praise – and FCP mounted quite an alternative to AVID. But then Apple decided to stop developing the software... and ultimately geared it towards a non-professional market. In recent years, Apple has made the newest version of FCP10 able to perform on a level more like the FCP7 days – and so we are seeing the occasional professional editor returning to FCP. These days, Final Cut Pro accounts for a very small percentage of our clients.

When editing is completed it will be necessary to export your project's audio so that we can start to work with it. Final Cut Pro 10 makes this relatively easy. But you'll need to spend $150 at the Apple Store to purchase X2Pro Audio Convert first! You will choose AAF on export. There are a couple of choices you need to make when you select AAF. First: Consolidate your sequence with handles. 90 frames are what we like. Next, check the option to keep audio crossfades, and if you are on version six or later, select the option to keep volumes. Finally, make sure that all your files are the same sample and bit depth (This usually is 24 or 16 bits and 48K.) You should keep in mind that AAFs cannot be larger than 2 gigs. If your project's audio is larger than 2 gigs, make two (or three) OMFs. Please break the OMFs up by tracks -- that is, the first OMF might be tracks 1-6 and second 7-12. (This is preferable to giving all the tracks for the first half of the program.) Select OK and type in file name for the AAF. Save to appropriate location.


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The most common method is either a Quicktime (.mov) or .mp4 file. Pro Tools performs a bit better with .mov, but systems like Premiere make exporting a .mov unwieldy. If it is easy, please provide an .mov. Although we can handle uncompressed files, that is usually overkill. Most non-linear systems employ some amount of data compression and utilize a variety of codecs. We work with many codecs (DNxHD, ProRes, DV, H264) and can convert the file if a particular codec is problematic. As of June 2021, Pro Tools now accepts H265. When the file sizes are the same, H265 provides about twice the picture quality of H264. We will want as close to the final visuals (graphics, animations, etc.) as possible. 720 x 480 pixels is a good starting size for us – smaller resolutions make it impossible to judge lip sync correctly. Regardless of file type and size please make sure that it is a full frame file – one that does not skip frames. Keep in mind that if you plan to upload the file through an FTP server, you might want to keep the size of the movie file under two gigs.

Finally, it is always a good idea to have a head and tail “2 pop” on your project. A “2 pop” is a one frame visual cue (color bars for example) aligned with a frame of 1 KHz tone. It is placed exactly 2 seconds before first frame of picture and again 2 seconds after the last frame of picture. This simplifies syncing the final mix when re-importing into your non-linear system (especially Final Cut Pro!).

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Although a variety of surround systems exist today, 5.1 multi-channel surround sound is the most common. A 5.1 set-up produces five discreet channels of sound in the left, right, center, left surround and right surround positions. 5.1 systems also have one channel designated for LFE (low frequency effects) which is sent to a subwoofer.

Beside the obvious creative advantages of being able to circle your viewers with dynamic sound design and music, 5.1 systems put less demand on their individual speakers. In a more conventional stereo system there are only two speakers. This means every sound, from teeth rattling explosions to dense music scores and dialog, has to “fit” into these two speakers. To achieve this, mixers have used a combination of equalization, compression, and brick wall limiting. Since 5.1 has five discreet full frequency speakers, there is less crowding which results in less distortion and a reduced need for audio processing. And the LFE (or “boom” channel) takes a huge burden off the main speakers as the LFE sub-woofer is designed to handle only the low end frequencies.

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Named after Hollywood legend, Jack Foley, Foley is the craft of re-creating production sound in a controlled acoustic environment. First a Foley artist assembles a wide variety of props (shoes, plates, straw, vegetables, liquids) on a soundstage that screens the film requiring Foley. The artist then literally copies the movements on the screen while being recorded by an audio engineer. Footsteps, keys jangling, drinks being poured, computer typing – whatever is required, the Foley artist must perform perfectly in sync with the production visuals.

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DCP, or Digital Cinema Package, is the digital version of a 35mm film print. It is what a filmmaker supplies to a commercial theater for screening on a digital projector. And like 35mm, DCP is a world wide standard.

The DCP is comprised of computer files containing video and audio along with information regarding playback. It is delivered to the theater on a hard drive.

There are many debates on digital versus analog 35 mm image quality, but audio is a simpler story. And the cost for DCP creation is much friendlier to the independent producer than the good old days of 35mm prints.

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Please call if you have questions about your audio mix and DCP - as how you approach audio post will be influenced by the decision to create a final DCP.

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