[Ffmpeg-devel] upsampling of subsampled video data

Attila Kinali attila
Sun Sep 10 10:34:54 CEST 2006


On the OGP mailinglist there is currently a discussion going on
on how and when to perform upsampling of subsampled YUV data.

My biggest question is whether the U and V data is just
coppied to all the pixels or is it interpolated between
the sample points?

If it's interpolated, how much image quality los would it
be to just copy it?

Additionaly, would it be enough to support only 4:2:2 and 4:2:0
as the most common formats, or shall other "odd" formats like 4:1:1,
3:1:1 or 3:1:0 ?

			Attila Kinali

egp ist vergleichbar mit einem ikea bausatz fuer flugzeugtraeger
			-- reeler in +kaosu

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