[MPlayer-users] Audio and video slowly drifting out of sync

[Timothy Jones]

On Thu, Mar 25, 2010 at 4:42 PM, Rolf Ernst
<rolf.ernst at silverlightning.org>wrote:

> On 3/25/2010 3:36 PM, Uoti Urpala wrote:
>
>> On Thu, 2010-03-25 at 10:13 -0400, TJ wrote:
>>
>>
>>> When playing HD files encoded with h.264, video progressively goes out of
>>> sync
>>> with (lags behind) the audio. I tried it on 2 different computers. Here
>>> are the
>>> commands I used:
>>>
>>>
>>
>>
>>> I am using MPlayer SVN-r29796-4.3.4.
>>>
>>>
>>
>>
>>> I was thinking maybe this has something to do with the monitor refresh
>>> rate
>>> being 60Hz while the video is 59.94Hz.
>>>
>>>
>> Yes this problem is most likely related to the frame rates. It's a
>> limitation of the VDPAU driver (also shared by some other video outputs)
>> in MPlayer svn.
>>
>> Try compiling a player from
>> git://repo.or.cz/mplayer-build.git
>>
>> That has superior VDPAU support and should avoid this problem.
>> (Depending on your linux distro there may be precompiled packages
>> available in case you don't want to compile yourself.)
>>
>>
> Is it drifting out of sync only during playback or also when you seek
> forward. Say you start playback in the middle - is this also out of sync? If
> this is the case I doubt it is related to the display driver but happens at
> encoding time.
>
>
> Rolf, If I seek, the sync goes back and starts drifting again. I know files
record OK, as I copied it to Mac and played OK with VLC. -TJ