Create a video thumbnail grid
gif & images
// shell
$ ffmpeg -i input.mp4 -vf "select='not(mod(n\,100))',scale=320:180,tile=4x4" -frames:v 1 thumbnail.jpg$ ffmpeg -i input.mp4 -vf "select='not(mod(n\,100))',scale=320:180,tile=4x4" -frames:v 1 thumbnail.jpg