[MPlayer-users] Fw: apparent frame dropping when playing mpeg4 part 2 es

Tim Jebb jebbtr at talk21.com
Thu Sep 30 15:11:24 CEST 2010

Excellent, that seems to have done the trick.  Thanks very much!

--- On Wed, 29/9/10, Reimar Döffinger <Reimar.Doeffinger at gmx.de> wrote:

From: Reimar Döffinger <Reimar.Doeffinger at gmx.de>
Subject: Re: [MPlayer-users] Fw: apparent frame dropping when playing mpeg4 part 2 es
To: "MPlayer usage questions, feature requests, bug reports" <mplayer-users at mplayerhq.hu>
Date: Wednesday, 29 September, 2010, 7:10

On Tue, Sep 28, 2010 at 02:09:19PM +0000, Tim Jebb wrote:
> The video files thus created play fine in mplayer, with one exception, which as far as I can tell is always the same:  the first three P frames in the file are not decoded.  It doesn't matter which second I start with, I'm always missing the 1st three P frames.  I can get those three frames to be decoded by starting one second earlier - in which case I'm
>  missing three P frames from that earlier second and so on.  The first I frame is always present.

The parser in dec_video.c is broken and does not split the first frames.
-demuxer lavf fixes it, -vc mpeg12 is a workaround when decoding but does
not help when remuxing with mencoder and -ovc copy.
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