[FFmpeg-trac] #7437(undetermined:new): clap atom values ignored by ffmpeg when remuxing to matroska

FFmpeg trac at avcodec.org
Tue Nov 27 21:24:36 EET 2018


#7437: clap atom values ignored by ffmpeg when remuxing to matroska
-------------------------------------+-------------------------------------
             Reporter:  kieranjol    |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  mov          |               Resolution:
  cropping                           |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by kieranjol):

 Replying to [comment:8 kieranjol]:
 > Replying to [comment:7 cehoyos]:
 > > Replying to [comment:6 kieranjol]:
 > > > Replying to [comment:5 cehoyos]:
 > > > > Regarding the title of this ticket: Do I understand correctly that
 the issue you see is only reproducible when remuxing to matroska?
 > > >
 > > > Kind of.
 > >
 > > Really?
 > >
 > > > I think ultimately the issue is that ffmpeg does not detect clean
 aperture values
 > >
 > > Can we agree that this issue is completely unrelated to matroska and
 the (first) issue is simply that FFmpeg ignores the clap atom in mov
 files?
 > Yes, firstly - FFmpeg should be able to read the clap atom prior to this
 issue being fixed. I think this issue should stay open as I think there
 should be a mapping between clap and PixelCrop. Should I start a new issue
 that's just 'FFmpeg ignores clap atom'?

 Just to clarify, I agree that this issue is jumping too far ahead and that
 the clap atom support needs to come first. The request for a mapping
 requires clap support. But I think the mapping is important so I'd like to
 leave the ticket open.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7437#comment:9>
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