Using FFMPEG to extract video loses sync between sound and vision

Jim web web at
Wed Feb 10 01:31:51 PST 2016

In article
Macfarlane <c.e.macfarlane at> wrote:

> ... and trying to extract a section of this ...


> ... with the following command ...

> FFMPEG -i CuirmCeltic-2016-1.mp4 -acodec copy -vcodec copy -ss 1211.5
> -to 1465 Chieftains.mp4

> ... leads to a result where the sound is out of sync with the vision. 
> Can anyone suggest a fix?

Two suggestions, but I don't know if they will fix it.

A newer version of ffmeg may help.

Convert the entire file to something like mkv first. Check that for lip
synch. Then snip that.


Armstrong Audio
Audio Misc

More information about the get_iplayer mailing list