[MEncoder-users] Convert MTS to MP4: Video and audio out of sync

[Reimar Döffinger]

On 13.04.2016, at 04:25, Ooe Eoo <ooe8eoo-at-yahoo.com at ffmpeg.org> wrote:

> Hi,
> 
> 
> Sorry that if this question has been asked before.
> I have downloaded the latest version 1.3
> I am trying to convert mts video to mp4 video using mencoder. This is the command I am using
> mencoder.exe mts_video.mts -oac copy -ovc lavc -o mp4_video.mp4
> However, the result  is the original 29s 536ms video has become 1mn 3s long, and the video / audio is out of sync. The duration of audio remains at 29s 536ms.
> Hope someone can help.

-oac copy will generally lead to desync. It might work better with -noskip -mc 0 or such, but that is not guaranteed.
Also you seem to be generating an AVI file with .mp4 extension which doesn't seem very useful.