2023-06-23, 03:56 AM
Regarding the quality issue. It is likely the AMD GPU. Even Jellyfin's documentation says transcoding to H264 is not great with AMD.
https://jellyfin.org/docs/general/admini...nd-quality
I have an Intel CPU, so I am using QSV instead of VAAPI. My media is mostly 1080p HEVC and not 4k60, but when it gets transcoded to lower bit rate H264 (not at home + cellular) the quality is shockingly close to the 10-15Mbps HEVC source.
So the fact that 35Mbps H264 the quality is "really really poor" tells me it's the AMD GPU. And my recent experience with AMD GPUs (RX6800) and encoding via Handbrake reinforces what the Jellyfin link above states about AMD GPU based encoding. So much so that I opted to use my old PC with a GTX 1070 as my HEVC encoding box.
https://jellyfin.org/docs/general/admini...nd-quality
I have an Intel CPU, so I am using QSV instead of VAAPI. My media is mostly 1080p HEVC and not 4k60, but when it gets transcoded to lower bit rate H264 (not at home + cellular) the quality is shockingly close to the 10-15Mbps HEVC source.
So the fact that 35Mbps H264 the quality is "really really poor" tells me it's the AMD GPU. And my recent experience with AMD GPUs (RX6800) and encoding via Handbrake reinforces what the Jellyfin link above states about AMD GPU based encoding. So much so that I opted to use my old PC with a GTX 1070 as my HEVC encoding box.