[Cin] Prepping HW upgrade options for AV1 de-/encoding

Terje J. Hanssen terjejhanssen at gmail.com
Thu Dec 14 23:21:20 CET 2023

On 12/14/23 18:38, Phyllis Smith via Cin wrote:
> On Tue, Dec 12, 2023 at 8:17 AM Andrea paz via Cin 
> <cin at lists.cinelerra-gg.org> wrote:
>     I tried to create an encoding profile for av1_vaapi. I attach the
>     preset.
>     It does not work and I get the following error:
>     [av1_vaapi @ 0x7f8c94163500] A hardware frames reference is required
>     to associate the encoding device.
>     FFMPEG::open_encoder  err: Invalid argument
> A lot of "muddy waters" when searching this on the internet but the 
> bottom line is for us in looking for what are the current ffmpeg 6.1 
> supported encoders, key in:
> # ./thirdparty/ffmpeg-6.1/ffmpeg -encoders | grep av1
> V....D *libaom-av1*          libaom AV1 (codec av1)
>  A....D *wmav1 *              Windows Media Audio 1
> which means the first line of av1_vaapi.webm can only be "webm 
> libaom-av1" which will not provide vaapi; that is the line used in 
> av1.webm.

Hm, I wonder why so few av1 encoders are enabled?

In comparison I get this list from Packman's ffmpeg 6.0.1 on 

    fmpeg -encoders -hide_banner | grep av1
      V....D libaom-av1           libaom AV1 (codec av1)
      V....D librav1e             librav1e AV1 (codec av1)
      V..... libsvtav1            SVT-AV1(Scalable Video Technology for
    AV1) encoder (codec av1)
      V....D av1_nvenc            NVIDIA NVENC av1 encoder (codec av1)
      V....D av1_amf              AMD AMF AV1 encoder (codec av1)
      A....D wmav1                Windows Media Audio 1

    ffmpeg -hwaccels -hide_banner
    Hardware acceleration methods:

Additional references:

> Just to ensure that the " ./thirdparty/ffmpeg-6.1/ffmpeg -encoders | 
> grep your_request" works as expected, keyin:
> # ./thirdparty/ffmpeg-6.1/ffmpeg -encoders | grep h264
> V....D *libx264*              libx264 H.264 / AVC / MPEG-4 AVC / 
> MPEG-4 part 10 (codec h264)
>  V....D *libx264rgb*           libx264 H.264 / AVC / MPEG-4 AVC / 
> MPEG-4 part 10 RGB (codec h264)
>  V....D *h264_nvenc*           NVIDIA NVENC H.264 encoder (codec h264)
>  V..... *h264_v4l2m2m *        V4L2 mem2mem H.264 encoder wrapper 
> (codec h264)
>  V....D *h264_vaapi*           H.264/AVC (VAAPI) (codec h264)
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