#ffmpeg #videoConvert #command

format.sh

# convert to h.264 mp4
ffmpeg -i $input -f mp4 -vcodec libx264 -preset fast -profile:v high -level:v 5 $output -hide_banner

3 remove audio track only
ffmpeg -i $input -vcodec copy -an $output

# shrink video resolution
ffmpeg -i input.mp4 -vf scale=480:320 output_320.mp4

# change the video resolution and aspect ratio 
ffmpeg -i input.mp4 -vf scale=480:320,setdar=4:3 output_320.mp4

# Convert lossless mp4 video
# https://superuser.com/questions/624565/ffmpeg-convert-flv-to-mp4-without-losing-quality
ffmpeg -i input.mov -c:v libx264 -crf 19 -strict experimental filename.mp4