YV12 is prefered for some playback sources but for most uses YUY2 is
preferred. 
I will add YUY2 at some point but it doesnt seem to stop things working so
its not high up the list.

John

> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:ivtv-devel-
> [EMAIL PROTECTED] On Behalf Of Ruud Huynen
> Sent: 24 August 2005 16:59
> To: [email protected]
> Subject: [ivtv-devel] xdriver 10.5
> 
> Hello
> 
> In the mailings I read XV is superior than X11. I tried all versions of xv
> but output has always been jerky.
> X11 looks allright. The PC is a 2.8Ghz, ivtv 0.3.7d, MPlayer 1.0pre7. VOBs
> are copied to disk.
> Commands used (with and without cach):
>   - mplayer -vo xv -alang de -nocache -really-quiet -fs "$1"
>   - mplayer -vo xv -alang de -cache 8192 -ao sdl -framedrop -really-quiet
> -fs -vf scale=720:-2,expand=720:576:::0 "$1"
> 
> From reading the mplayer documentation
> http://mplayerhq.hu/~diego/DOCS/HTML/en/video.html#xv
> it explains: "It must support YUY2 packed, and YV12 planar pixel formats
> to be usable with MPlayer".
> 
> When I issue xvinfo I can not find a YUY2 section. Is this one of the
> problems ?
> When your setup works, please send me your xvinfo output to compare.
> 
> thanks Ruud
> 
> ----------------------------------------------------------------
> X-Video Extension version 2.2
> screen #0
>   Adaptor #0: "PVR350"
>     number of ports: 1
>     port base: 56
>     operations supported: PutImage
>     supported visuals:
>       depth 24, visualID 0x22
>       depth 24, visualID 0x23
>       depth 24, visualID 0x24
>       depth 24, visualID 0x25
>     number of attributes: 2
>       "XV_COLORKEY" (range 0 to 16777215)
>               client settable attribute
>               client gettable attribute (current value is 101)
>       "XV_AUTOPAINT_COLORKEY" (range 0 to 1)
>               client settable attribute
>               client gettable attribute (current value is 0)
>     maximum XvImage size: 768 x 576
>     Number of image formats: 1
>       id: 0x32315659 (YV12)
>         guid: 59563132-0000-0010-8000-00aa00389b71
>         bits per pixel: 12
>         number of planes: 3
>         type: YUV (planar)
> 
> 
> 
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