[FFmpeg-trac] #8106(undetermined:reopened): Unexpected audio truncation with `-c:a copy`

[FFmpeg]

#8106: Unexpected audio truncation with `-c:a copy`
-------------------------------------+-------------------------------------
             Reporter:  gdgsdg123    |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by gdgsdg123):

 * status:  closed => reopened
 * version:  unspecified => git-master
 * resolution:  needs_more_info =>


Comment:

 Minimal command to reproduce:
 {{{
 ffmpeg -loop 1 -i "random.png" -i "1.webm" -c:a copy -r 15 -vframes 3548
 "1.mkv"
 }}}
 [[BR]]
 For the input audio you can grab it from !YouTube:
 {{{
 youtube-dl -f 249 http://www.youtube.com/watch?v=8fyTbI4TIS0
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8106#comment:3>
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