But what I said before about framerates and resolutions is a technical fact. Sometimes, the patch method can work for PAL-NTSC. There is also a real good online reference. If you are interested in the technincal details of DVD, get Jim Taylor's book, DVD Demystified. And professional studios, ensure the audio is slowed. Just cos it's up on Digital Digest, which I obviously respect very much, does not make it technically true (although the descrption you have quoted above about interlacing and speed up is correct - anyway PC monitors could not care less about framerate). I'm just trying to increase my understanding! The audio then becomes slightly sharp from its original recording, The data can be displayed non interlaced (progressive scan) for component (RGB) video and on computer monitors. For example, to play a stream in PAL format, each frame of the video is shown twice, video and audio data is interlaced and both audio and video are “speeded up” by 4%. The MPEG streams on the DVD contain instructions regarding how to treat the video information for display depending upon the type of DVD player. Most DVD’s are encoded from videotape with a rate of 24 fps and are interlaced. The US, Canada and Japan use NTSC which has a rate of 29.97 fps.

Most countries in the world use the PAL video standard which has a frame rate of 25 frames per second (fps). To truly convert, you need to adjust the VOBs framerates and resolutions. It alters the framerates in the VOBs not one iota. The patch method (as it is known) just won't cut the mustard.

Program to convert pal to ntsc dvd