[MPlayer-dev-eng] r32056 Causes Loss of A/V Sync with VOB files

[Steaphan Greene]

On 06/18/2011 04:11 AM, Reimar Döffinger wrote:
> On Fri, Jun 17, 2011 at 03:01:43AM -0400, Steaphan Greene wrote:
>> Also, I was able to reproduce this same problem with other vo
>> settings, including vo=vdpau without interlacing and vo=xv, and
>> using different -speed settings.
> 
> Then please provide details.
> I tried to reproduce with
> -vf scale=2000:2000,yadif,yadif -vo xv -framedrop
> and while it drops a lot of frames it keeps sync just fine.
> Same even with -hardframedrop

The only commonalities I can find are that the video without -framedrop
or -hardframedrop is very slow (so it needs to drop frames), and the
source is a VOB file.  In fact, I now notice that all that I tested that
show this are TV VOB files encoded such that I see this:

	demux_mpg: 24000/1001fps progressive NTSC content detected, switching
framerate.

	demux_mpg: 30000/1001fps NTSC content detected, switching framerate.
	Warning! FPS changed 23.976 -> 29.970  (-5.994005) [4]

	demux_mpg: 24000/1001fps progressive NTSC content detected, switching
framerate.

	...etc.

Could this bug be due to mishandling this changing frame rate perhaps?
Now that I've noticed this, I will look into this aspect further.

-- 
Steaphan Greene <sgreene at cs.binghamton.edu>
Lecturer, Computer Science, Binghamton University
GPG public key: http://www.cs.binghamton.edu/~sgreene/gpg.key.txt