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Some? Practically every encoded video intended for end-users is 4:2:0 (and certainly everything in HDTV, Blu-ray, and DVD.) I meant mainly for consoles, comput
by brigade 15y ago
Some? Practically every encoded video intended for end-users is 4:2:0 (and certainly everything in HDTV, Blu-ray, and DVD.)
I meant mainly for consoles, computers, and subtitles (though for subtitles it also depends on your DVD player) so I amended my post.
- jpdoctor 15y ago> and certainly everything in HDTV, Blu-ray, and DVD. The HD broadcasts are 4:2:2, more often than not. There are a few stations that have their video servers down at 4:2:0, but many of those are scheduled to upgrade over the next 2 years. Edit: The servers are 422, but the broadcasts are 420, as brigade points out. (The edit tag on my original comment has already expired. Grrr.)
- brigade 15y agoATSC only allows 4:2:0 in MPEG-2 (ATSC A/53 part 4 section 6.1.3) or H.264 high profile (which is restricted to 4:2:0). I'm admittedly not familiar with other countries, but I would be incredibly surprised if any of them allowed 4:2:2.
- jpdoctor 15y agoThank you, you are correct. I've assumed that the video settings of the server is what they were delivering, but there must be a down-sample on the way to the transmitter. (Cablelabs is the other large distribution format that we encounter, which yields the same story.)