gstreamer child process
var spawn = require("child_process").spawn;
var converter = spawn("gst-launch-0.10", ["filesrc location=/dev/stdin ! decodebin ! audioconvert ! audioresample ! lame ! filesink location=/dev/stdout"]);
converter.stdout.on("data", function(chunk) {
console.log(chunk.toString());
});
converter.stderr.on("data", function(chunk) {
console.log("err: ", chunk.toString());
});
converter.on("end", function() {
console.log("end");
});