logoalt Hacker News

lgkrnkglwntoday at 6:46 AM1 replyview on HN

Then chatgpt missed an obvious issue, nvidia definitely have had shortcomings in the hardware implementation of coder/decoders only supporting 420 in nvenc/nvdec. One obvious problem with that was that it affected premiere.


Replies

torginustoday at 7:28 AM

We have been using NVENC with 444 and h264 in production going back years and HW as old as Turing.

But it turns out you are right, 444 decoding with H264 doesn't seem to be supported up until recently:

https://developer.nvidia.com/video-encode-decode-support-mat...

Never noticed, seems like a strange omission, but in any case doesn't seem to apply to newer codecs like AV1.