Compress mp4 video for web

compress-video.sh

# Output as muted mp4
ffmpeg -i source.mp4 -an -vcodec copy output-min.mp4

# Very slow compress
ffmpeg -i input.avi -c:v libx264 -crf 18 -preset veryslow -c:a copy out.mp4

# Output as webm
ffmpeg -i source.mp4 -c:v libvpx-vp9 -b:v 1M -pass 1 -f webm /dev/null && ffmpeg -i source.mp4 -c:v libvpx-vp9 -b:v 1M -pass 2 output.webm

# Mute video
ffmpeg -i source-mute.mp4 -acodec copy -vcodec copy -movflags faststart output-mute-fast.mp4

# Compress the muted video even more
ffmpeg -i source-mute-fast.mp4 -vcodec libx264 -crf 28 output-mute-fast-h265.mp4