[FFmpeg-trac] #7379(avformat:closed): Matroska regression after ff_isom_write_avcc() changes

[FFmpeg]

#7379: Matroska regression after ff_isom_write_avcc() changes
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             Reporter:  gontandre    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:  fixed
             Keywords:  h264         |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by gontandre):

 I do not understand how your fix should help.
 As I understand main issue is related to no extradata in codec parameters
 on input h264 stream.
 I attached flv file just for example.
 Main issue is when I read v4l2 device and have same error as on example
 flv:
 {{{
 $ ffmpeg -v trace -f v4l2 -i /dev/video1 -vcodec copy -t 2
 matroska_and_ff_isom_write_avcc.mkv >
 matroska_and_ff_isom_write_avcc_v4l2.log 2>&1
 }}}
 Please, take a look into new attachment.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7379#comment:4>
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