[MPlayer-users] Dumping yuv4mpeg at faster than realtime

Bryan Donlan bd at fushizen.net
Sun Apr 13 04:33:56 CEST 2008

Reimar Döffinger wrote:

> On Mon, Apr 07, 2008 at 11:35:55AM -0400, Bryan Donlan wrote:
>> I'm trying to dump yuv4mpeg at faster-than-realtime speed, so I can pipe
>> it into x264. I've tried:
>> mplayer -vo yuv4mpeg:file=stream.y4m -ao null -ac null -vf [...]
>> inputfile
> -nosound -benchmark

This also results in desynchronization, as does -nosound by itself. I'm
running -nosound -mc 0 now.

>> but this seems to dump at real-time. I've also tried:
>> mplayer -vo yuv4mpeg:file=stream.y4m -ao pcm:fast:file=/dev/null -vf
>> [...] inputfile
>> but this produces A-V desynchronization (with or without -mc 0).
> Huh, do you have framedrop enabled? Otherwise the yuv4mpeg output is
> supposed to be the same.

Unless framedrop is enabled by default, no...

I've also tried using a source that has only video and no audio, but it also
results in desync once I try to mux it back.

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