This program is the answer to my dreams....A way of authoring a DVD without re-rendering.....but unfortunately when creating the IFO and VOB files from the mpeg video and audio streams, the VOB ends up as only 400mb. Although it's a great program, I doubt whether it can squeeze a 4GB mpeg video into 400 MB. No errrors are reported. Anyone got any ideas on how to get around this or what I'm doing wrong?