My brother-in-law has a TDK burner and uses Pinnacle 9 for his production. He wants to know why he can only get +-60min of Video and sound on a 4.7GB DVD. On the CD it states 120min, he says. His setting are all on 100% - DVD quality. I did try to explain that DVD quality is the highest. Now he wants to know why he can get 2x as much renderd video onto a VideoCD then. Can one produce/render it as a VideoCD and burn it to DVD? (Will it be compactable with household DVD players?)
My bet is he is using uncompressed audio (wav) as the audio component for his dvd and/or he is using CBR setting with high bitrate for his video component. To get > an hour of material on a dvd you would need to use compressed audio (the standard is ac3, but many lower end authoring apps try to get by with mpeg audio--which is not a part of the NTSC standards and won't play on some set top's) and VBR for video. You wouldn't want to put video cd type material on a dvd, unless the only destination for playback would be a computer. Set top players won't recognize videoCD content on a dvd. You would also suffer loss of quality because the mpeg1 files would be of inferior quality.