Michael Niedermayer: > On Fri, Dec 24, 2021 at 04:23:32AM +0100, Andreas Rheinhardt wrote: >> There are no encoders for interlaced dct that support 4:4:4. > > i dont remember why its not supported but > why not add 4:4:4 interlaced dct support ? > > just thinking as you already work on the code, that would seem to me > the "more interresting" route than to optimize that out > > nothing againt this patch of course, thats fine too > > thx > [...] >
There are two encoders that support interlaced DCT: mpeg2video and mpeg4. Our encoder for the former supports 420 and 422; the format also allows 444. I don't really know how much is missing for supporting this (it's probably more than just hardcoding a third chroma format in ff_mpeg1_encode_mb()). And honestly, I don't really want to reread the mpeg-2 spec to find out, because it is nearly 2022 and MPEG-2 is obsolete and legacy. - Andreas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
