Generate Video Thumbnails

To generate equal-sized thumbnails from video files

for x in *; do
    ffmpegthumbnailer -i "$x" -o "../artwork/$x.jpg" -t 15% -s 256
    convert "../artwork/$x.jpg" -resize 192x144^ "../artwork/$x.jpg"
    convert "../artwork/$x.jpg" -gravity center -crop 192x144+0+0 "../artwork/$x.jpg"
done