Topic: neTV board at higher resolutions

I'm working on a project where I need to overlay some images on tip of a incoming HDMI feed, and the neTV(http://www.adafruit.com/products/609) looks like a really elegent way to do that, as opposed to some setup with a HDMI capture card.  The issue is that it looks like the neTV only supports 480p, 576p, 720p, 1080p/24, 1080i/60 natively, and the display I'm feeding to is 1920x720.  Looking through the wiki, it looks like there's a hack to allow for a 1280x720 image(http://kosagi.com/w/index.php?title=NeTV_tricks), is it feasable to do the same for a 1920x720 image?  Is there some hardware limitation?(http://forum.chumby.com/viewtopic.php?pid=38859#p38859 seems to indicate that there's a limit that the Pixel Clock needs to be less than 95 MHz, but that post is about a year old, and the board seems to now support some things that it was listed as not.)

Re: neTV board at higher resolutions

The pixel clock is indeed the limitation.  The FPGA simply can't keep up with a 1080p60 signal, because it requires a 145MHz(ish) signal.  It can handle 1080p24 and 1080i60 because those have the same pixel clock as a 720p signal.

I don't see 1920x720 in the list of CEA video rates, which means it's probably nonstandard.  If the frequency is below ~100 MHz, then you just need to modify matchmoded to switch the LCD device to match the incoming rate.  You can still try matching the rate even if it's above 100 MHz, but it might not be stable, and thus we can't guarantee it'll work.