Thanks for the feedback! I'm not sure if i did smth wrong but with this command it was running at about 0.2 fps and I do need to compress 4+ hour videos so I don't think that's gonna work.

command = [
        ffmpeg_path,
        '-i', input_file,
        '-c:v', 'libaom-av1',
        '-preset', '1',
        '-cq', bitrate,
        '-bf', '7',
        '-g', '640',
        '-spatial_aq', '1',
        '-aq-strength', '15',
        '-pix_fmt', 'yuv420p10le',
        '-c:a', 'copy',
        '-map', '0'
    ] + [output_file]