No. H.264 supports 4:2:0, 4:2:2 and 4:4:4 assuming you chose a profile which supports it, like "High4:4:4" (which at least x264 supports). (see: https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles for a list of the profiles H.264 supports in general)
Downsides of 4:4:4 are that there is more data to save, which requires more data rate and cpu power for en- and decoding.
Also most hardware decoders won't support High 4:4:4.
Out of curiosity is your content really anamorphic (<> PAR != 1:1) if it is what PAR (pixel aspect ratio) is it that you end up with an actual resolution of 1920x817, or isn't is anamorphic and simple square pixels (<> PAR 1:1) with a DAR (display aspect ratio) of 2.35:1?
Cu Selur
Downsides of 4:4:4 are that there is more data to save, which requires more data rate and cpu power for en- and decoding.
Also most hardware decoders won't support High 4:4:4.
Out of curiosity is your content really anamorphic (<> PAR != 1:1) if it is what PAR (pixel aspect ratio) is it that you end up with an actual resolution of 1920x817, or isn't is anamorphic and simple square pixels (<> PAR 1:1) with a DAR (display aspect ratio) of 2.35:1?
Cu Selur
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.