ffmpeg.md

get cover from video

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -ss 00:00:01.000 -vframes 1 exports/cover.png

each 10 seconds

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf fps=10/60 exports/thumbnails/thumbnail-%03d.jpg

convert to lower resolution if possible: 1080p, 720p, 480p, 360p

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf scale=1080:1080 -c:v libx264 -crf 23 -preset veryslow -c:a aac -strict experimental -b:a 128k -movflags +faststart -y exports/video_1080p.mp4

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf scale=720:720 -c:v libx264 -crf 23 -preset veryslow -c:a aac -strict experimental -b:a 128k -movflags +faststart -y exports/video_720p.mp4

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf scale=480:480 -c:v libx264 -crf 23 -preset veryslow -c:a aac -strict experimental -b:a 128k -movflags +faststart -y exports/video_480p.mp4    

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf scale=360:360 -c:v libx264 -crf 23 -preset veryslow -c:a aac -strict experimental -b:a 128k -movflags +faststart -y exports/video_360p.mp4

visually lossless

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf scale=480:480 -c:v libx264 -crf 18 -preset veryslow -c:a copy exports/video_lossless_480p.mp4

ffmpeg -i SampleVideo_1280x720_30mb.mp4 -vf scale=360:360 -c:v libx264 -crf 18 -preset veryslow -c:a copy exports/video_lossless_360p.mp4