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  1. Sep 2020
  2. stackoverflow.com stackoverflow.com
    What exactly is Fragmented mp4(fMP4)? How is it different from normal mp4?
    1
    1. TylerRick 29 Sep 2020
      Determining this exact byte position within one massive mdat in each respective file is not trivial.
      unfortunate design decisions MP4 container
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    stackoverflow.com/questions/35177797/what-exactly-is-fragmented-mp4fmp4-how-is-it-different-from-normal-mp4
  3. stackoverflow.com stackoverflow.com
    python ffmpeg moov atom not found Invalid data when processing input
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    1. TylerRick 29 Sep 2020
      The Moov atom can only exist after recording is complete when the relevant metadata can now be created for the stored data.
      unfortunate limitations unfortunate design decisions MP4 container
    2. TylerRick 29 Sep 2020
      MP4 containers are structured in such a way that the a/v data is stored without frame headers and the Moov atom is a table, listing the byte positions and byte lengths for each a/v frame. The Moov atom can only exist after recording is complete when the relevant metadata can now be created for the stored data.
      MP4 container
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    stackoverflow.com/questions/50134790/python-ffmpeg-moov-atom-not-found-invalid-data-when-processing-input