вс, 25 мая 2025 г., 23:16 Terje J. Hanssen via Cin <cin@lists.cinelerra-gg.org>:
According to Phoronix 22 May 2025 :
  • FFmpeg FFV1 Vulkan Encoder Lands +35% Improvement For AMD, +50% For NVIDIA
  • No word on Intel performance benefits from this Vulkan encode optimization.

AFAIK Intel has not yet QSV support for FFV1 either.

Any idea which ffmpeg version release ffv1_vulkan will be available ?

I guess "upcoming", I saw references to 8.0 in commits.


And which color bit depths will be supported: 8-bit yuv422p and 10-bit yuv422p10le/ y210 ?
Speed tests?

Speed was not great for my rx550 (few fps for 4k video), but may be Arc actually faster for such workloads?

I see at least those mentioned in ../thirdparty/ffmpeg.git/libavcodec/ffv1enc_vulkan.c

    if (avctx->sw_pix_fmt == AV_PIX_FMT_GBRP10 ||                                                          avctx->sw_pix_fmt == AV_PIX_FMT_GBRP12 ||
        avctx->sw_pix_fmt == AV_PIX_FMT_GBRP14)

so high-bit depth RGB is supported.

I'll try to synthetize Vulkan ffv1 encoder preset and see what it offers.