[MPlayer-users] mencoder videos completely out of sync...

Nico Sabbi nicola_sabbi at fastwebnet.it
Sun Apr 1 22:11:36 CEST 2007


Alexander Roalter wrote:

> For some of my videos I set up a quasi uniform 2-pass encoding 
> process, which is (taken partly from the Mencoder Doc):
>
>
> mencoder "$1" -o "$2" -oac lavc -lavcopts abitrate=128 -ovc x264 
> -x264encopts 
> bitrate=512:subq=4:bframes=3:b_pyramid:weight_b:pass=1:turbo=1:threads=4 
> -vf scale=384:288,dsize=384:288 -srate 44100 -ofps 24
>
> mencoder "$1" -o "$2" -oac lavc -lavcopts abitrate=128 -ovc x264 
> -x264encopts 
> bitrate=512:subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid:weight_b:pass=2:threads=4 
> -vf scale=384:288,dsize=384:288 -srate 44100 -ofps 24
>
> in the 4:3 case, in the 16:9 case I use a different dsize (512:288).
>
> Now don't ask why I set fps to 24 and srate to 44100, but that's the 
> way it should be for this purpose.
>
> Now everything worked fine until recently, when I added all the 
> mumbo-jumbo after bitrate=512: (except for pass=x...),
> there's no audio sync anymore, and skipping in the video does also not 
> work, audio restarts always at the beginning ???
>
> As the added options are video only, they should not be the problem.
>
> Now, one question is: why does the audio counter go that fast on the 
> video?
>
> VO: [xv] 384x288 => 384x288 Planar YV12
> A:1692.3 V:   4.5 A-V:1687.805 ct:  0.450 109/109  4%  0%  0.5% 0 0
> Exiting... (Quit)
>
>
> Mplayer is
> MPlayer dev-SVN-r22545-4.0.2 (C) 2000-2007 MPlayer Team, as is mencoder.
>
> any suggestions?


b-frames and b-pyramid are not features that avi can handle correctly, 
if not sometimes
for pure luck



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