[FFmpeg-trac] #8374(ffmpeg:new): Streaming video + audio to decklink causes duplicate frames and buffer underflows

[FFmpeg]

#8374: Streaming video + audio to decklink causes duplicate frames and buffer
underflows
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             Reporter:  vschweitzer  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by cus):

 * cc: cus (added)


Comment:

 Ok, I can see that it is not. You should try creating the file with
 uncompressed audio this way:

 ffmpeg -i trailer_1080p.mov -ac 2 -acodec pcm_s16le -vcodec copy -af
 atrim=end=32.48 trailer_uncompressed.mov

 Now the length of audio and video should be the same (you can check with
 mediainfo). Decklink output looping (NO -re option!!!) should now just
 work.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8374#comment:3>
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