av1_nvenc hardware encoding

[johannesdedoper]

Hello,

Hope everything well in Italy!
Still using your awesome tool ;)

I was wondering if there is/will there be support for av1_nvenc as it is possible to compile ffmpeg 6 with av1_nvenc ?
I can than test this to create some presets as I have a Nvidia 4xxx gpu.

Hope to here from you.
Ciao,
J.

[jeanslack]

Hello Johannes,
How are you? Nice to hear from you again.

I haven't compiled FFmpeg 6 yet, I just compiled version 4.4 on Slackware with support for the latest version of libaom (v3.6) and have noticed notable improvements. I think av1 deserves attention at this point.

Great news!
I'm waiting for your av1_nvenc presets.

Ciao!

[jeanslack]

I was wondering if there is/will there be support for av1_nvenc as it is possible to compile ffmpeg 6 with av1_nvenc ?

As far as I know, in ffmpeg 6 there would be support for vulkan hardware acceleration using AV1.

version 6.1:

• libaribcaption decoder
• Playdate video decoder and demuxer
• Extend VAAPI support for libva-win32 on Windows
• afireqsrc audio source filter
• arls filter
• ffmpeg CLI new option: -readrate_initial_burst
• zoneplate video source filter
• command support in the setpts and asetpts filters
• Vulkan decode hwaccel, supporting H264, HEVC and AV1
• color_vulkan filter
• bwdif_vulkan filter
• nlmeans_vulkan filter
• RivaTuner video decoder
• xfade_vulkan filter
• vMix video decoder
• Essential Video Coding parser, muxer and demuxer
• Essential Video Coding frame merge bsf
• bwdif_cuda filter
• Microsoft RLE video encoder
• Raw AC-4 muxer and demuxer
• Raw VVC bitstream parser, muxer and demuxer
• Bitstream filter for editing metadata in VVC streams
• Bitstream filter for converting VVC from MP4 to Annex B
• scale_vt filter for videotoolbox
• transpose_vt filter for videotoolbox
• support for the P_SKIP hinting to speed up libx264 encoding
• Support HEVC,VP9,AV1 codec in enhanced flv format
• apsnr and asisdr audio filters
• OSQ demuxer and decoder
• Support HEVC,VP9,AV1 codec fourcclist in enhanced rtmp protocol
• CRI USM demuxer
• ffmpeg CLI '-top' option deprecated in favor of the setfield filter
• VAAPI AV1 encoder
• ffprobe XML output schema changed to account for multiple
  variable-fields elements within the same parent element
• ffprobe -output_format option added as an alias of -of

[johannesdedoper]

Hello again ;)

I did some research.

From FFmpeg 6.0 onwards hardware AV1 encoding should be supported.

More on 6.1 and the 7.0 release of FFmpeg : ffmpeg-6-1-heaviside-released-with-vaapi-av1-encoder-hw-vulkan-decoding

The user should compile FFmpeg version 6.1.1.
My Linux OS still used the FFmpeg 4.3 release
Check for your version: ffmpeg -version

Linux: How to update/install to the latest version of FFmpeg with av1_nvenc !
You need to compile from source and install FFmpeg to get the latest version with av1_nvenc.
Use this for how to compile and install correctly: compiling FFmpeg with nvenc av1

In this same document you can also read how to compile for Windows.

Afterwards test if av1_nvenc is installed correctly:
ffmpeg -h encoder=av1_nvenc

I got an error: /usr/bin/ffmpeg: No such file or directory
If you get this error on Linux just copy the compiled ffmpeg files (ffplay, ffprobe and ffmpeg), from where ever they are installed, to the /usr/bin/ffmpeg directory. On Linux the most likely place to search for the files is /usr/local/bin/ffmpeg.

Then open Videomass, make a new simple preset to test:
-c:v av1_nvenc -b:v 8M -c:a copy with output format mkv
This should work!

Cheers,
J.

[jeanslack]

Thanks a lot,
It can be useful to us.