AV1で遊んでる
ffmpeg -i ".mp4" -threads 8 -vf "unsharp=lx=5:ly=5:la=0.1" -vcodec libaom-av1 -g 240 -crf 50 -b:v 0 -usage realtime -tune ssim -cpu-used 8 -row-mt 1 -tiles 4x2 -lag-in-frames 35 -aom-params "enable-dnl-denoising=0:sharpness=1:enable-chroma-deltaq=0:quant-b-adapt=1:arnr-strength=3:arnr-maxframes=15:frame-boost=1:tune-content=default:aq-mode=1" -acodec libopus -application audio -compression_level 5 -b:a 128k -frame_duration 120 -blocksize 256 -flush_packets 1 "rav1e opus.webm"