[FFmpeg-trac] #10065(ffmpeg:closed): Gap in video by -c copy in mkv opus

[FFmpeg]

#10065: Gap in video by -c copy in mkv opus
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             Reporter:  yumu      |                    Owner:  (none)
                 Type:  defect    |                   Status:  closed
             Priority:  normal    |                Component:  ffmpeg
              Version:  5.1.2     |               Resolution:  fixed
             Keywords:  mkv opus  |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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Changes (by yumu):

 * status:  new => closed
 * version:  git-master => 5.1.2
 * resolution:   => fixed

Comment:

 Replying to [comment:3 mkver]:

 Oh, it was 5.1.2 that only the video shifted. I verified it again and in
 master, as you said, both video and audio were only shifted by 7 ms on the
 first copy. The output of ffprobe in my text did the same thing. I was
 mainly using 5.1.2, so I was mistaken. My apologies. I will fix the
 version in this ticket.

 I see, the audio needs an "encoder delay" (silent part) first. So ffmpeg
 needs to shift the audio forward or the video backward for this delay.

 5.1.2 behaved quite strangely.

 Thank you so much mkver.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10065#comment:4>
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