README.md

Plain FFmpeg

Plain FFmpeg is really tiny library for constructing and executing FFmpeg processes from Node.

Features

• Output from stderr is formated in JSON
• Unlike other FFmpeg wrappers, it exposes the actual process and it's events
• It doesn't provide convinience methods that mask options i.e you'll be using .in('-r', 24) to set the input framerate instead of .setFramerate(24)

Example

One way of starting the process is:

var FFmpeg = require('./plain-ffmpeg');

var ffmpeg = new FFmpeg({
    global: {'-y': null},
    input: {
        '-i': 'http://domain.com/video.mp4',
        '-r': 24
    },
    output: {
        'output.mov',
        '-c:v': 'libx264'
    }
});
ffmpeg.start();

ffmpeg.on('progress', function(progress) {
	console.log(progress);
})

All methods return the object, so you can chain them like:

var ffmpeg = new FFmpeg('input_path', 'output_path').out('-f', 'mp4').start()

The third argument in the constructor is an options object, so you can pass it presets:

var h264_preset = {
	in: {'-r', '24'},
	out: {
		'-c:v': 'libx264', 
		'-c:a': 'libaac'
	}
}

var ffmpeg = new FFmpeg('input_path', null, h264_preset).output('output_path');
ffmpeg.start()