[FFmpeg-devel] -vf copy does transcode rather than copy
nfxjfg at googlemail.com
Thu Oct 31 20:47:31 CET 2013
On Thu, 31 Oct 2013 14:02:00 -0500
David Favor <david at davidfavor.com> wrote:
> -c:v copy maintains SAR + DAR info.
> -vf copy should allow (to me) a filter chain of something like...
> -vf copy,setdar=dar=0,setsar=sar=0
> which should accomplish the following...
> 1) copy the video stream (bit for bit) so no transcode
> 2) completely remove SAR + DAR to repair broken videos
The video filter chain can't handle compressed video (and probably
never will), so this can't work. You'll need a separate mechanism to
adjust the aspect ratio.
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