Parameters for ffmpeg conversion

[RavenWorks]

Yeah, that addresses the problem I was having!  (To be more specific, values that were negligibly close to zero on a normal screen, were flickeringly apparent on the TinyTV as the video compression rounded them up and down from frame to frame -- with this source tweak, that no longer happens, and effectively-black areas now all look basically uniformly black like they should.)   Anecdotally, I have a hunch that colors are slightly more vibrant now too, though I might be imagining that?   Anyway, I definitely approve this change -- that's one less ffmpeg script that I'll need to keep lying around to adapt things for the TV

[RavenWorks]

I just did a fresh build of the latest firmware on the github and immediately noticed how much paler everything was, because until just now I'd been using the modified SetXY file from your last post, which I guess has never actually made it into the official builds?  Should I propose it as a pull request at this point, or do you want to add it yourself?