outputs avconv configuration

genAvconvCmd.js

// argument input_file

// process inFile and outFile
var inFile = process.argv.pop();

var cutAt = inFile.lastIndexOf('.');
var inExt = inFile.substr(cutAt + 1);
var inName = inFile.substr(0, cutAt);

var outFile = [inName, 'mp4'].join('.');



var cmd = [
	'avconv',
	'-i', inFile,

	'-f', 'mp4',

	'-c:v', 'libx264',
	// '-c:v', 'mpeg4',

	'-preset', 'ultrafast',

	'-b:v 2M -maxrate 1M -minrate 1M -bufsize 1M',
	'-r', 25,
	'-s', '480x270',

	// '-c:a', 'aac',
	'-c:a', 'libvo_aacenc',
	// '-c:a', 'libmp3lame',
	//'-c:a', 'copy',

	'-b:a', '96k',

	//'-ss', '00:00:00', // start at hh:mm:ss[.xxx]
	//'-t', 60,         // trim duration, in seconds or hh:mm:ss[.xxx]

	outFile
].join(' ');

console.log(cmd);

/*
list formats:
avconv -formats

list encoder codecs:
avconv -codecs|grep "^..EV"|less
avconv -codecs|grep "^..EA"|less

http://libav.org/avconv.html
*/