Why do archives mandate AAC inside MP4 buckets?
DAM and compliance programs often standardize on MP4 so backups, transcoders, and access-control policies treat audio and video siblings the same way. Call-center exports, forensic demuxes, and FFmpeg captures still land as .aac or ADTS streams that need a respectful wrapper before ingest bots accept them. Searchers type aac to mp4 archive, dam audio mp4 policy, adts ingest mp4, and sidecar audio primary because metadata discipline matters more than bitrate bragging. Black-frame MP4s look broken in thumbnail grids unless sidecars scream audio-primary intent and UI filters hide false positives. Wrapping does not replace WAV or FLAC preservation tiers when contracts demand PCM masters—document which generation lives where. Overwriting object keys destroys chain-of-custody—always mint new keys with hashes and operator timestamps. Ai2Done keeps the archive variant forensic: pilot batches, DAM validation, rollback windows, and legal sign-off before mass migrations delete legacy paths.
How to register AAC as policy-compliant MP4 objects
- Open AAC to MP4, choose the archive variant, read the enterprise template for still resolution, fps, and allowed AAC profiles, then run a pilot batch inside a staging bucket.
- Import samples into the DAM, verify thumbnails, MIME sniffing, antivirus throughput, and audio-primary tags before you queue thousands of hours.
- Cut over with new object keys, reciprocal checksums, and written acknowledgement from records management before deleting any ADTS originals policy still mandates.