ffmpeg tips

ffmpeg

ffmpeg -i input.jpg -vf scale=320:240 output_320x240.jpg
ffmpeg -y -i input.jpg -vf "scale='min(500,iw)':'min(500,ih)'" output_500x500.png
ffmpeg -y -i input.jpg -vf "crop=in_h" output_center.png
ffmpeg -y -i input.jpg -vf "scale=w='min(500,in_h):h=-1'" output_center1.png
ffmpeg -y -i input.jpg -vf "scale=w='min(1000,in_h):h=-1',crop=out_w=in_h,scale=w='min(200,in_h):h=-1" output_center2.png
ffmpeg -i input1.mov -vcodec copy -acodec copy out1.mp4
ffmpeg -i input1.mov -q:v 0 output1.mp4
ffmpeg -i input.mkv -codec copy output.mp4

#ffmpeg -i 1000x1250.jpg -vf scale=w=300:h=300:force_original_aspect_ratio=increase,crop=300:300 temp.jpg -y
#ffmpeg -i 1000x563.jpg -vf scale=w=300:h=300:force_original_aspect_ratio=increase,crop=300:300 temp2.jpg -y

#ffmpeg -i 1000x1250.jpg -vf scale=w=300:h=300:force_original_aspect_ratio=decrease temp.jpg -y

#ffmpeg -i 848x480.mp4 -vf scale=w=300:h=300:force_original_aspect_ratio=increase,crop=300:300 temp.mp4 -y
ffmpeg -i 640x320.mp4 -vf scale=w=300:h=300:force_original_aspect_ratio=increase,crop=300:300 temp.mp4 -y

ffmpeg -i IN.mp4 -b:a 192K -vn OUT.mp3

ffmpeg -i IN.mkv -codec copy OUT.mp4
ffmpeg -i IN.avi -c:v copy -c:a copy -y OUT.mp4

ffmpeg -ss 00:01:00 -to 00:02:00 -i IN.mp4 -c copy OUT.mp4

ffmpeg -i 640x320.mp4 -vf scale=500:-2 -c copy temp.mp4 -y

ffmpeg -i INPUT.mkv -map_metadata -1 -map_chapters -1 -ss 00:00:45 -to 02:09:15 -vf scale=688:-2 OUT.mp4

ffmpeg -i INPUT.webm -vcodec libx264 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -r 24 -y -an video.mp4