public byte[] serialize(MediaContent content) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream(expectedSize);
TIOStreamTransport trans = new TIOStreamTransport(baos);
TBinaryProtocol oprot = new TBinaryProtocol(trans);
content.write(oprot);
byte[] array = baos.toByteArray();
expectedSize = array.length;
return array;
}