It's easy to do with DVD NTSC-24p. With NTSC many DVDs are encoded at 24p and the player does the 3:2 pulldown . With PAL it takes a lot of computing power and care to accurately change the playback speed, it's a radically different process.
PAL speedup drives me insane, I have no idea how people can stand those chipmunked voices and the unnatural cadence of the film. Even when something is corrected, I can always tell that it's a 24-25fps conversion. They do pitch correct, but nowhere near often enough.
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