FFmpeg 7.0.2
Since* 6.1
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This is the CUDA variant of the libvmaf filter. It only accepts CUDA frames.

It requires Netflix’s vmaf library (libvmaf) as a pre-requisite. After installing the library it can be enabled using: ./configure --enable-nonfree --enable-ffnvcodec --enable-libvmaf.

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Examples

  • Basic usage showing CUVID hardware decoding and CUDA scaling with scale_cuda:

    ffmpeg \
        -hwaccel cuda -hwaccel_output_format cuda -codec:v av1_cuvid -i dis.obu \
        -hwaccel cuda -hwaccel_output_format cuda -codec:v av1_cuvid -i ref.obu \
        -filter_complex "
            [0:v]scale_cuda=format=yuv420p[ref]; \
            [1:v]scale_cuda=format=yuv420p[dis]; \
            [dis][ref]libvmaf_cuda=log_fmt=json:log_path=output.json
        " \
        -f null -