Holdfast wrote:
From a completely non-tech person (me!): was there any technical reason why the UK DVDs had to be speed up but the BluRays don't need to be?
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UK DVDs had to be in PAL, at 25 frames per second; the spec/players don't support any other option*. But TNG was shot at 23.976 frames per second; that meant that the show either needed to be converted or sped up; speeding it up is the standard that's evolved over the last few decades (and results in much higher picture quality).
Blu-ray added support for the normal film framerate, 23.976 frames per second, so film content can be shown "as is" without being sped up.
* Yes, NTSC is supported as well, but there's no guarantee that TVs could show it natively, and no requirement that players support converting on-the-fly, so there was never any chance that a major commercial house would support it.