Quote:
Originally Posted by DarkSpace
Auto uses the ASS script's YCbCr Matrix flag if it's present and otherwise defaults to using TV.601 (or, for PC-range content, PC.601) YUV values.
Guess chooses the YUV values to use by resolution, although I don't know if it attempts to read the YCbCr Matrix field first.
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cyberbeing has already posted the correct description, but just to make sure: if the "YCbCr Matrix" field of an ASS file is missing, it will always report "TV.601", even on PC content. This is to ensure compatibility to "legacy" vsfilter, which always assumes TV.601, too. XySubFilter has no way to discern between full and limited range videos in the first place, because it lacks the ability to read those info from the video stream/splitter and as long as all conversions are done by the consumer it does not even need this feature.