Grunt task to convert Video to HTML5 Formats.

Grunt Convert Video FFMPEG

/*

 convertVideo_config: {
 ffmpeg: 'bin/ffmpeg/./ffmpeg',
 mp4: '-vcodec libx264',
 m4v: '-vcodec libx264',
 '3gp': '-acodec libvo_aacenc -vcodec libx264',
 webm: '-acodec libvorbis -vcodec libvpx',
 ogv: '-acodec libvorbis'
 },

 */

module.exports = function (grunt) {
    "use strict";


    grunt.registerMultiTask('convertVideo', 'Video to html5 formats', function () {
        var ffmpeg = grunt.config('convertVideo_config.ffmpeg') + ' -i ',
            done = this.async(),
            c = [],
            p = [],
            Op = {
                mp4: function (i, o) {
                    return ffmpeg + i + ' ' + grunt.config('convertVideo_config.mp4') + ' ' + o;
                },
                m4v: function (i, o) {
                    return ffmpeg + i + ' ' + grunt.config('convertVideo_config.m4v') + ' ' + o;
                },
                '3gp': function (i, o) {
                    return ffmpeg + i + ' ' + grunt.config('convertVideo_config.3gp') + ' ' + o;
                },
                webm: function (i, o) {
                    return ffmpeg + i + ' ' + grunt.config('convertVideo_config.webm') + ' ' + o;
                },
                ogv: function (i, o) {
                    return ffmpeg + i + ' ' + grunt.config('convertVideo_config.ogv') + ' ' + o;
                },
                mpg: function () {},
                mov: function () {},
                avi: function () {},
                flv: function () {},
                f4v: function () {}
            },
            allfiles = grunt.file.expandFiles(this.file.src);
        grunt.file.expandFiles(this.file.src).forEach(function (file) {
            var r = [
                [/\.mp4/, 'mp4'],
                [/\.m4v/, 'm4v'],
                [/\.3gp/, '3gp'],
                [/\.webm/, 'webm'],
                [/\.ogv/, 'ogv'],
                [/\.mpg/, 'mpg'],
                [/\.mov/, 'mov'],
                [/\.avi/, 'avi'],
                [/\.flv/, 'flv'],
                [/\.f4v/, 'f4v']
            ],
                t = [];
            for (var i = 0; i < r.length; i++) {
                if (r[i][0].test(file)) {
                    t.push(r[i]);
                    r.splice(i, 1);
                }
            }
            for (var k = 0; k < t.length; t++) {
                for (var j = 0; j < r.length; j++) {
                    var regEx = new RegExp(t[k][0]);
                    if (allfiles.indexOf(file.replace(regEx, '.' + r[j][1])) === -1 && p.indexOf(file.replace(regEx, '.' + r[j][1])) === -1) {
                        p.push(file.replace(regEx, '.' + r[j][1]));
                        if (Op[r[j][1]](file, file.replace(regEx, '.' + r[j][1])) !== undefined) {
                            c.push(Op[r[j][1]](file, file.replace(regEx, '.' + r[j][1])));
                        }
                    }
                }
            }
        });
        require('child_process').exec(c.join(' && ')).on('exit', function () {
            done(true);
        });
    });
};