video.pl

    my $default_arguments = "-hide_banner -loglevel panic -y -pix_fmt yuv420p ";

    my $formats = {

        ogv => { mimetype => "video/ogv",  arguments => qq| $default_arguments -c:v libtheora  -b:v 600k  -acodec libvorbis -b:a 96k -vf scale=720:-2 |,                                          ext => 'ogv' },
        mp4 => { mimetype => "video/mp4",  arguments => qq| $default_arguments -c:v libx264    -b:v 1000k  -movflags +faststart -acodec libfaac -profile:v baseline -b:a 128k -vf scale=-2:720 |, ext => 'base.mp4' },
        png => { mimetype => "image/png",  arguments => qq| $default_arguments -vframes 1 |,                                                                                                      ext => 'png' },
        vp8 => { mimetype => "video/webm", arguments => qq| $default_arguments -c:v libvpx     -b:v 1500k   -acodec libvorbis          -vf scale=-2:720|,                                         ext => 'vp8.webm' },
        vp9 => { mimetype => "video/webm", arguments => qq| $default_arguments -c:v libvpx-vp9 -b:v 1000k   -acodec libvorbis -speed 1 -vf scale=-2:720|,                                         ext => 'vp9.webm' },
    };