ffmpeg -loglevel panic -y -i "http://d1ny0ivw86xxbh.cloudfront.net/vids/1mb.mp4" -frames 1 -q:v 1 -vf "select=not(mod(n\,40)),scale=-1:120,tile=100x1" video_preview.jpg

ffmpeg -loglevel panic -y -i "http://d1ny0ivw86xxbh.cloudfront.net/vids/1mb.mp4" -vf "thumbnail" -frames:v 1 /tmp/XVlBzgbaiCMRAjWwhTHc-1mb.mp4
 /usr/local/bin/ffmpeg -loglevel panic -y -vf "thumbnail" -frames:v 1 -i  http://d1ny0ivw86xxbh.cloudfront.net/vids/1mb.mp4 /tmp/XVlBzgbaiCMRAjWwhTHc-1mb.mp4


ffmpeg -i mixkit-portrait-of-a-fashion-woman-with-silver-makeup-39875.mp4 -vf cropdetect -f null - 2>&1 | awk '/crop/ { print $NF }' | tail -1


ffmpeg -i mixkit-portrait-of-a-fashion-woman-with-silver-makeup-39875.mp4 -filter:v "crop=1072:1920:4:0" output.mp4


ffmpeg -i v4.mp4 -vf fps=1 img%03d.jpg

ffmpeg -ss 00:00:02 -i v-v1.mp4 -frames:v 1 v-v1.png