[MPlayer-dev-eng] [PATCH] Seek in real media files V3

Moritz Bunkus moritz at bunkus.org
Mon Oct 27 14:28:43 CET 2003


Hi.

> I've tested that, actually it lead to some oscillatory effect when seeking, 
> the video first goes crasy to about -2 seconds a/v desync, then it slows down 
> and waits for the audio to catch up, after they sync again everything goes 
> normal, I don't think it will be a good experience when our users try to seek 
> in this way :).

That's a combination of problems in RealAudio and mplayer's structure
imho. First, RealAudio knows key frames and non-keyframes just like
video in general. You cannot start decoding RealAudio from every packet
on. Second, mplayer cannot discard the _decoded_ contents up to a
specific timestamp/frame (which would also be required for
frame-accurate start pos etc.), so you just have to live with it.

(You might be lucky from time to time when audio and video key frames
are really close together.)

-- 
 ==> Ciao, Mosu (Moritz Bunkus)
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