[MPlayer-dev-eng] Strange behavior with audio delayed video files

[Reimar Döffinger]

On Thu, Feb 20, 2014 at 07:29:50PM +0100, Ingo Brückl wrote:
> When I use FFmpeg (ffmpeg -i file.mkv -itsoffset 60 -i file.mkv -codec copy
> -map 0:v -map 1:a sync.mkv) to adjust an audio delay (60 seconds in this
> example) I'm experiencing a strange behavior with MPlayer playback. The audio
> firstly starts at the very beginning as if no delay had been set. When I jump
> back to the beginning, it runs silent until 60 seconds have been played, and
> every seeking is OK, i.e. the audio is in sync now.
> 
> So, is the first playback with immediate audio a MPlayer bug?

MPlayer always plays audio right from the start.
I guess you could call that a bug, though I kind of consider it a
feature as well.

> Also, there is a short-time video hang-up where the audio starts (after 60
> seconds). MPlayer or FFmpeg issue?

Well, there might be some issues when it tries to get them in-sync
again, but no, this doesn't sound like anything familiar.
No idea what happens there and why.