[MPlayer-users] Re: Strange bug with software scaler

[Rémi Guyomarch]

On Tue, Apr 16, 2002 at 09:13:30AM +0200, Rémi Guyomarch wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi,
> 
> I'm using cvs-current under FreeBSD 4.5. There's a strange bug in the
> software scaler implementation. When scaling to 572x240, I'm seeing
> the U and/or V components shifted to the left, more and more as you
> look from top to bottom in the image, as if there's one pixel less
> in in U and V planes than the Y plane. White, black or gray isn't
> shifted.

Just for the record : after some testing, it seems it's my XV driver
which doesn't want video with non 8-aligned width.

I'm getting the shifted output with :
	mplayer -vo xv -vop scale=572:240 foo.avi

But not with :
	mplayer -vo xv -vop expand=576:-1,scale=572:240 foo.avi

Furthermore, only the straight -vo xv exibits this behaviour. I'm not
getting shifted output with :
	mplayer -vo x11 -vop scale=572:240 foo.avi
	mplayer -vo sdl -vop scale=572:240 foo.avi (use xv)
	mplayer -vo sdl -noxv -vop scale=572:240 foo.avi
	mplayer -vo sdl:dga -vop scale=572:240 foo.avi

I'm using mplayer cvs-current, ffmpeg cvs-current, FreeBSD 4.5,
XFree86-4.2.0 compiled from FreeBSD's ports and my video card is a
Radeon VE.

-- 
Rémi