[MPlayer-users] VESA screen wrapping problems

[Nick Kurshev]

Hello, Chris!

On Sun, 3 Feb 2002 00:56:00 -0800 (PST) you wrote:

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Greetings,
> 
> I'm having problems playing a variety of different files of different
> formats using the VESA output. I havent seen anyone mention this problem
> in the mailing list archive. The problem I'm having is that for the very
> first run of mplayer since the machine booted up the image is shifted to
> the left by half its width. So the right half is on the left and the left
> half is on the right. The second time I run mplayer (same exact command
> line and file) it runs perfectly fine. Third time, split in half and so
> on. To throw in another weirdness, if I play a different movie which is
> of a different size, the image ends up being shifted not by half, but by
> some other amount. Like by 1/3, 1/4 or more smaller increments where it
> gets hard to guess how much its shifted.
> 
> Before I upgraded the video BIOS to the latest version, the second time I
> ran mplayer I would get kernel oops and the machine would die very
> quickly. Now there is no effect on kernel stability, just the display of
> the image. The readme for the new bios said nothing about VESA fixes, but
> it hardly said anything of any substance.
> 
> I'm using VESA output because this card happens to have a TV out and I'd
> like to watch my movies on my TV sometimes. Here is my setup:
> 
> Hardware:
> Video is an Intense 3D Voodoo made by Intergraph (who no longer exists).
> The chipset is the Alliance Semiconducter AT25 for 2D and a Voodoo Rush
> also on there for 3D. This is in an Abit BP6 motherboard with two over
> clocked Celerons. The overclocking is perfectly stable, I slam it every so
> often to test to make sure its still keeping stable. I've already had to
> back it off a little. :/ The machine is starting to get a little old.
> 
> Software:
> I'm using glibc 2.2.5, kernel 2.4.17, gcc 2.95.3. I havent tweaked any of
> the compile lines. Latest CVS for mplayer and for ffmpeg.
> 
> I'm running mplayer with -vo vesa -fs -zoom. The fullscreen and zoom seem
> to have no effect on the problem. For DivX/AVI files, I have to use -vc
> ffdivx. I have not been able to get any codec other than ffdivx to work
> with vesa out. And before I went from 0.60 mplayer to current CVS, even
> that wouldnt work. For mpgs I do not specify a codec, it figures it out
> fine by itself. I have not tried any other file formats.
I just tested that - it works fine for me.
Indeed you can use SWScaling only with YV12 fourcc. So use ff* codec family for that.
For mpgs you can specify codec: ffmpeg12 (try mplayer -vc help for full list)
Also you have possibility to watch YUY2 without scaling on VESA.
> 
> Thanks for any help,
> Chris Newton
> 
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Best regards! Nick