There are two methods the Avid editor may use to prepare the files before exporting them:
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Production source audio has been auto-synced in the Avid Bin and placed on the Timeline
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Production source audio has been auto-synced and resides only in the Avid BinProduction Source Audio in Timeline Auto-Synced to Edited Production Sound MixThe production source audio in the Avid Bin has been auto-synced to the edited located sound mix, and all audio channels reside in the Avid Timeline.When you import this type of sequence into Pro Tools, the edited video, edited production sound mix, and all production source audio will be available to import directly into the Timeline.Production Source Audio Auto-Synced and Resides Only in the Avid BinIn the Avid video editing application, the raw production source audio has been auto-synced to the edited production sound mix, but all audio channels reside only in the Avid Bin.
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In this case, the AAF or OMF sequence does not contain or reference the production source audio when imported into Pro Tools. The Avid editor must deliver the production files to Pro Tools separately. The Avid editor may either deliver the production audio files from the Avid or OMFI Media Files folder, or they may deliver the raw production source audio files, which have not passed through Media Composer.