I'm using Adobe Premiere Pro and rendered an hour long video in both H.264 and MPEG4. When played in a PS3, the H264 played for about 20 minutes then started getting jerky; became un-watchable. The MPEG4 copy worked fine.
I've never had much sucess with H.264 - either in rendering, and now in playing the DVD.
Anyone have any suggestions on other settings with H264, like frame rate?