ldeveraux wrote:
Oh goody, another thing to buy

I also have the Extron IN1508 just sitting around, would that be useful in this situation at all?
I'd need to dig mine out of storage and take the time to verify, but I think the IN1508, like the DSC 301 HD, only does seamless switching between inputs, not seamless transitions between video modes. Plus, the IN1508 isn't 240p-aware, so it treats it as 480i; that lets it survive 240p/480i transitions, but it also forces deinterlacing, which, if I remember correctly, ends up introducing combing artifacts. Worth a try, but understand the tradeoffs.
nmalinoski wrote:
If your TV doesn't like the video modes coming out of the OSSC, or you'd like better deinterlacing, you're probably best off putting the DSC 301 HD between the OSSC and the display, like in your example.
Do keep in mind that, at least in my experience, it takes about 3 full seconds to recover from HDMI blackouts when the OSSC is connected to the DSC 301 HD with HDMI. You can get this down to about 1 second by using an HDMI to VGA converter (I use the Portta one) and using the DE-15 input on the DSC 301 HD, but you won't be able to eliminate it.
I posted my TV specifics earlier, and I guess it's pretty good? I'm not sure, I'm not technical enough to know where it stands. I know it supports 960p, which would be good for 4x? I bought the silly 301, so I figured I might as well use it, but if it introduces 3sec HDMI recovery lag, that's not ideal. I also have that Porta converter, but I'll try just the 301 first[/quote]
960p is not necessarily VGA 1280x960, and the framerate might be off enough for your display to reject it. Definitely try the OSSC direct to your display first. I'd recommend line4x 240p, passthrough 480i (Because I'm not sure what feeding a bob-deinterlaced 480i to a plasma will do), and line 2x 480p.
If none of that works on your display, add the DSC 301 HD, configure it to output 1280x960@60. Then set up the OSSC with line5x 240p, line5x output mode to 1600x1200, 480i to passthrough or line3x (avoid line2x/4x), and 480p to line2x, and tweak the modes till you get what you think looks best.