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Imagemagick tricks
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| Convert every *.jpg into a thumbnail with 85% quality and size 125 x Auto, named tn-{originalfilename} | |
| $ for file in *.jpg; do convert $file -thumbnail 125x -quality 85 tn-$file; done | |
| $ for file in *.jpg; do convert $file -resize 800x600\! $file; done | |
| Get screenshot from video frame | |
| $ ffmpeg -ss 00:09:00 in.avi -vcodec png -vframes 1 -an -f rawvideo -s 119x64 out.png | |
| or | |
| $ffmpeg -ss 00:09:00 in.avi -vcodec mjpeg -vframes 1 -an -f rawvideo -s 119x64 out.jpg |
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