The subject is film conversion to videotape. During the analog era, two visual formats dominated: NTSC/PAL-M and PAL/SECAM. NTSC, the format the US and Japan used, ran at 525 interlaced lines (480 of which were visible on-screen) with a field rate of 60 Hz and a frame rate of 30 fps. PAL, used throughout Europe, ran at 625 interlaced lines (576 of which were visible on-screen) with a field rate of 50 Hz and a frame rate of 25 fps.
Film usually runs at a frame rate of 24 fps. Both NTSC and PAL encounter difficulties reproducing the 24fps experience: For NTSC conversion to 30fps, telecine methods use a 3-to-2 pulldown which is prone to telecine judder. PAL does not experience as severe a phenomenon due to their frame rate being closer to the original (thus explaining why it is frequently preferred over NTSC); their telecine method however speeds up the film by 4%, usually with an accompanying pitch shift of approximately 71 cents.
As HDTV set in, this became less and less of a problem; 1080i was compatible with NTSC and PAL, as well as film framerates.
But if I decided, in the argument over who is better, I would say "Damned if I choose this, damned if I choose that".
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1 year, 8 months ago
20 Sep 2022 06:37 CEST
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