libvmaf_cuda - FFmpeg 7.1 / Filters / Video

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.

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[dis]; \
        [1:v]scale_cuda=format=yuv420p[ref]; \
        [dis][ref]libvmaf_cuda=log_fmt=json:log_path=output.json
    " \
    -f null -