[FFmpeg-user] -Bitsream Copy and Seeking

[Lars Kiesow]

Hi everyone,
yesterday a college of mine brought to my attention the following
sentence from the FFmpeg wiki:

  “If you use -ss with -c:v copy, the resulting bitstream might end up
  being choppy, not playable, or out of sync with the audio stream,
  since ffmpeg is forced to only use/split on i-frames.” [1]

I'm regularly using bitstream copy together with seeking (-ss as input
option) and can't remember having any problems. Is this statement still
true?

I could understand that when -ss is used as output parameter it might
cause problems as ffmpeg will then decode the input stream but still
tries to use bitstream copy. Two things which kind of clash. But when
-ss is used as input option?

Regards,
Lars

[1] http://trac.ffmpeg.org/wiki/Seeking%20with%20FFmpeg
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 1513 bytes
Desc: not available
URL: <https://ffmpeg.org/pipermail/ffmpeg-user/attachments/20140828/0f181faa/attachment.asc>