A method, system, and computer program product for converting an Extensible MPEG-4 Textual (XMT) document into a binary MPEG-4 (mp4) file. The XMT document may comprise of zero or more associated media data files. The invention includes generating an intermediate document representing the mp4 file and...http://www.google.co.uk/patents/US20040111677?utm_source=gb-gplus-sharePatent US20040111677 - Efficient means for creating MPEG-4 intermedia format from MPEG-4 textual representation