[FFmpeg-trac] #3818(avformat:closed): Not possible to remux mp4 files from Sony XDCAM cameras

FFmpeg trac at avcodec.org
Wed Jul 30 18:07:46 CEST 2014

#3818: Not possible to remux mp4 files from Sony XDCAM cameras
             Reporter:  rmk         |                    Owner:
                 Type:  defect      |                   Status:  closed
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:  wontfix
             Keywords:  mov         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by rmk):

 Replying to [comment:4 Cigaes]:
 > “provided they are out there in the wild and not from a crazy source” is
 for reading non-standard files. This is indeed ffmpeg's policy. And ffmpeg
 can read your file.
 > For writing, that would be something like “provided there is a genuine
 need for it”.

 That's of course a grey area but as I do not have a strong case myself
 other than "why is it not possible like with other camera files", I think
 that position is generally a good thing.

 > As a side note, it seems that the MJPEG2000 specification defines “raw ”
 and “twos” that look like uncompressed PCM.

 That's interesting.You mean there would actually be potential for
 confusion between a jpeg2000 video sample description and that of raw
 audio? That would be messy indeed. Thanks for the info.

Ticket URL: <https://trac.ffmpeg.org/ticket/3818#comment:7>
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