BoxParser.createFullBoxCtor("prft", "ProducerReferenceTimeBox", function(stream) {
	this.ref_track_id = stream.readUint32();
	this.ntp_timestamp = stream.readUint64();
	if (this.version === 0) {
		this.media_time = stream.readUint32();
	} else {
		this.media_time = stream.readUint64();
	}
});

