Trying to perform both HW based decode and encode (transcode) on an RTX 20 series GPU Win11 machine. I can successfully run via ffmpeg H264, VP9, and AV1 with HW acceleration but H265 does not work. Using trace mode for ffmpeg I get that the capabilities returned via cuvidGetDecoderCaps() states:
format supported: no, max_mb_count: 0 and then also says the min/max width is 0 and the min/max height is 0. For H264, VP9, AV1 has a yes and expected parameters for the other fields.
I’ve installed the latest RTX drivers from the nvidia site without error.
Any idea what is going on? Are there settings in the registry, BIOS, VBIOS that impact this? Some other sort of configuration file being used upon DLL loading? The same ffmpeg binary works fine on other machines for H265 so it is not the ffmpeg build in my opinion.
Any insights or tips to help figure this out appreciated.
Thanks in advance