However at a similar encoding time the picture quality of X264/5 quality is better compared to VP8/9.

It wasn't unusable, without a doubt, yet NVENC used to eat a ton of subtleties. So an AV1 encoder with even better quality would have been nice addition. 264 is worse than x264 Medium and Slow, as well as Maxwell and Pascal NVENC. In x264 crf code, there are functions (ipratio & pbratio) where I-frame quantizer should be lower than P frame by 3 and B-frame quantizer should be higher than P frame by 2. AMF _ VCE on NAVI- Quality Analysis vs NVENC, X264 _ RX 580! RX 5700 _ RX 5700XT. x265 is an open-source HEVC encoder, originally ported These encoders produce H. 265/HEVC video encoder on Windows, Linux and FreeBSD, I decided to ask for guidance when it comes to compressing Anime (live action will follow at a later time) in the Doom9 forums. 265 (NVenc) encoder with all the other video options on their default settings. X264 faster is the usual compromise (quality vs latency) but with the 20 series cards Nvidia claim Nvenc at 6000kbit/s is equal to x264 fast, a setting that generally is too taxing on the cpu to use.

Ffmpeg h264 tune