Ffmpegs

We can’t use HW encoding in HEVC with a GeminiLake intel cpu

Gemini Lake cpu can’t encode HEVC with vaapi, so it uses the cpu. QSync can’t be used for encoding HEVC, as it is not supported by the cpu. We know this by using vainfo command and checking the codec supported.

From Chatgpt:

vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSliceLP
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSliceLP
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointEncPicture
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileVP9Profile0            : VAEntrypointVLD
      VAProfileVP9Profile2            : VAEntrypointVLD

The output of vainfo indicates that your Intel GPU supports a range of video codecs and profiles, including H.264, HEVC (H.265), VP8, and VP9. This means your hardware acceleration should work for both decoding and encoding, with some limitations.

read more