[mythtv] Marvel G200-TV: Some success

[Ray]

On Mon, Jan 13, 2003 at 11:55:23PM -0600, James D. Bearden wrote:
> 
> XawTV, MJPEG Tools, and Xine work flawlessly, so I had high hopes for 
> MythTV and the hardware MJPEG drivers. The MJPEGTools records video at 
> impressive quality with almost no CPU load. Unfortunately the MJPEG 
> hardware support in MythTV isn't near enough ready for prime time 
> apparently. The only way I could get it to work at all was to set the 
> resolution to 160x160, decimation of 2, and a quality of 10%. Setting the 
> decimation to 1 caused jerky, green video.

Normally decimation 2 = 352x240 but according to settings.txt Myth ignores
the resolution setting when you use hardware mjpeg and sets it automatically
based on your decimation setting.  

> With MJPEG Tools I could record 
> with a quality of 100%, so needless to say the results were discouraging. I 
> would suggest allowing a decimation of 4 to the setup as it might be 
> helpful to play with. Even after I got the video working it was obviously 
> blocky, but it was also jerky and it jumped horozontally. 

Even with the mjpeg tools most people can't do decimation 1 & quality 100. 
Recomended settings are more like d 1 & q 50 or d2 and q 70.

-- 
Ray