[FFmpeg-trac] #6114(undetermined:new): Vsync behaviour when used along with -ss

FFmpeg trac at avcodec.org
Tue Jan 31 13:20:46 EET 2017


#6114: Vsync behaviour when used along with -ss
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             Reporter:  Mlmlte       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  vsync        |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by Mlmlte):

 I am not sure whether it's a bug or not, I thought -vsync 1 behaviour was
 to sync audio with video by inserting/droppingv video frames. Am I wrong?

 A negative delay is an issue since when I try to cut my encode on key-
 frames with ffmpeg the audio gets out of sync, unfortunately.

 Thanks for the quick response, I can provide full command line output if
 you like.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6114#comment:2>
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