Yes, mplayer does process the video in -tv mode, it seems. For me, this causes
the video to lag too far behind the (passed-thru) audio. I'd like some
resolution to this: either overlay video or synchronized A/V capture,
processing, and playback. I think/hope the timeshift feature will do this for
me.

Also, just to be clear: you have the Matrox _Marvel_ G400? with TV-in and -out
on the same card. Is that correct?

for an alternative to xawtv, look at tvtime.sourceforge.net

--- Erland Lewin <[EMAIL PROTECTED]> wrote:
> I have a Matrox G400-TV in a fairly slow (450 MHz) machine.
> 
> Watching TV in overlay mode (xawtv) works great, but I have not been 
> able to get good tv output from mplayer.
> 
> My impression is that:
> * MPlayer does not use overlay-mode, but actually tries to grab and 
> process the data from the TV before displaying it.
> * The v4l drivers for the G400 conflict with the mga_vid driver for 
> mplayer. If I try to run mplayer with TV input and xmga output, the 
> output will be erratic and flicker. If I then try to run mplayer and 
> display a regular film clip, then it will also flicker even though it 
> displayed properly before doing the tv experiment. After removing and 
> reloading the v4l drivers, mplayer mga_vid display will work again.
> 
> My guess is that there is a hardware limitation in the G400, where some 
> part (the Back End Scaler (BES), or YUV->RGB conversion) is used in both 
> TV input and mga_vid output, and that both cannot be used at the same 
> time. If anyone could confirm this I would appreciate it.
> 
> So, my conclusion is that I would like to watch TV with freevo using 
> overlay mode. I saw that is such a program in the CVS attic, in 
> matrox_g400/Attic/v4l1_to_mga.c. What is the story of this program? Why 
> was it removed?
> 
> If my conclusions are correct, I would like to add an alternative to 
> mplayer to do TV watching for freevo. Would there be any objections to this?
> 
> 
> 
> 
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