[MPlayer-users] Fwd: YUV header corrupted

[Johann Amin]

Guillaume POIRIER wrote:
> I'm forwarding this msg at it was full of strange HTML thingies which
> mailman rejected as invalid content
>
> Guillaume
> ---------- Forwarded message ----------
> From: Johann Amin <jaymin at gmx.net>
> To: "MPlayer usage questions, feature requests, bug reports"
> <mplayer-users at mplayerhq.hu>
> Date: Wed, 01 Nov 2006 22:03:13 +0800
> Subject: YUV header corrupted
>
> The YUV file generated by mplayer is corrupt. I dumped a video with
> the command: mplayer vcd://1 -vo yuv4mpeg -ao pcm. When I try to read
> the file with other utilities such as yuvscaler or mpeg2enc, they tell
> me that: **ERROR: [yuvcorrect] Couldn't read yuv4mpeg header! or
> **ERROR: [mpeg2enc] Could not read YUV4MPEG2 header: system error
> (failed read/write)!. Even mplayer itself barfs with the error:
> Playing stream.yuv.
> YUV4MPEG2 file format detected.
> error parsing YUV4MPEG header: parameter out of range
>
> I've tried with both the rc1 tarball and svn version. I also tried
> with binaries for FC6, but I get unknown frame-rate error with
> mpeg2enc.
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Just out of curiosity, I dumped the the first line of the YUV file 
created by mplayer and compared that to a dump from ffmpeg.

mplayer YUV header
YUV4MPEG2 W352 H240 F23975999:1000000 Ip A4294967297:0

ffmpeg YUV header
YUV4MPEG2 W352 H240 F2997:125 Ip A1:1

Using a hex editor, changing A4294967297:0 to A1:1 allows mpeg2enc to 
process the file.