We finally got a High-Def TV, but I've decided to leave the MythBox on it's 
S-Video tether (I have to work up the nerve to dive into a PCHD install, and in 
the mean time the DVI-in is reserved for the external HD tuner).  What I've 
been working on for the last couple hours is trying to get Myth to take 
advantage of the widescreen so I don't get letterbox-in-letterbox when I watch 
DVDs with it.

I finally got X into 720x480p (DVD wide resolution) with this modline
   ModeLine "NTSC-DVD-60p" 26.964 720 760 816 856 480 482 488 525
which I found on this website
   http://www.sllug.org/how-to/linux-htpc/video_card_configuration.html

I also put the following options in the Devices section of xorg.conf
   Option "ConnectedMonitor" "TV"
   Option "TVStandard" "NTSC-M"
   Option "TVOutFormat" "SVideo"        # Picture was Black&White before this 
option

After I got X in wide res and set the zoom on the TV to "Full" (so the picture 
is stretched across the whole TV), it was really easy to get mplayer playing 
dvds in the right proportion: I just added
   -monitoraspect 16:9
to the mplayer command line under the DVD,VCD, and Video options, and now the 
DVD fills up the entire screen in glorious anamorphic progressive scan.

Now the part I'm having trouble with is getting the same kind of behavior out 
of MythFrontend. Here's the situation now....

* This Video is stored in 4:3, 640x480
* Mythfrontend is displaying it as 640x480, pixel-for-pixel, letterboxing on 
the sides
* The picture still looks stretched horizontally because 720x480,16:9 pixels 
are wider than 640x480,4:3 pixels
* It was hard to wrap my head around the math but i figured a picture of about 
540x480 would look right, so I used the options in the Appearance section of 
the frontend to set that as the GUI/playback size.
* The GUI looks just about right at 540x480, but since TV playback scales 1:1, 
it stops getting bigger when the sides hit the 540 mark and the vertical 
doesn't fill up the entire 480, so I'm back to the dreaded 
letterbox-within-letterbox problem that I started with, and the picture is 
stretched anyway

So my questions are.... is there a way to override the TV playback scale ratio? 
 Is there an easy option like mplayer and I'm just missing it?  Has anyone else 
had luck doing this?  What do you guys think?

Thanks,
Mike

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