Originally Posted by CAVX
At what levels of black are the black bars encoded at? Is it RGB = PC0 or RGB = PC16? Is there a standard or vary from studio to studio?
It shouldn't really matter (PC or Video black) since you calibrate the input so that "black" input == "black" output. The complication I see is that the detection would need to determine two things, first if there are bars, and second, how big they are. This can be tricky in some situations, like when the video is black or close to black (starfields). Take for example Star Wars Ep IV, it opens on a starfield, it would be pretty hard to figure out if that's scope or not from the first second or two. And then there's the question of when/how often do you change.
None of these are terribly difficult or insurmountable, but they do make it a bit more complicated than just, "are ther bars? Yes/No"
I wonder if Kaleidescape has the metadata for that. I though I'd heard they have letterbox bar locations and aspect ratio information to drive and perfectly position automated masking.