Erotic Rites of Frankenstein (The) AKA The Curse of Frankenstein AKA La Maldición de Frankenstein AKA The Rites of Frankenstein (Blu-ray) (1973)
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Blu-ray A America - Kino Lorber [2015 Release]
Redemption Films #47
Aspect Ratio: 2.40:1
Cuts: no cuts (74:05), including Redemption logo (0:10) at start.
Extra: optional subtitles on trailer i.e.:
French Theatrical Trailer (3:23, in French with optional English subtitles)*
Source: I own it
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Blu-ray B United Kingdom - Nucleus Films [2018 Release]
The European Cult Cinema Collection #01
Aspect Ratio: 2.40:1
Extras: optional subtitles on trailer i.e.:
French Theatrical Trailer (3:22, in French with optional English subtitles)
Source: I own it
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Note the small apparent difference in net runtime between these releases (for the French version):
73:50 - Kino Lorber DVD
73:55 - Kino Lorber Blu-ray
73:51 - Nucleus Films Blu-ray
It seems that the Kino Lorber DVD uses non-drop-frame timecode, meaning that, relative to its timestamp, it is running at 24.000fps, although in real-world time it will presumably be 23.976fps, with the player's clock running slightly slow.
The Kino Lorber Blu-ray uses drop-frame timecode, and runs at 23.976fps, with the player's clock displaying the correct real-world time.
However, the real-world runtimes of the Kino Lorber DVD and Kino Lorber Blu-ray are likely more or less identical.
The Nucleus Films Blu-ray uses non-drop-frame timecode, and runs at 24.000fps, both relative to its timestamp and in real-world time, with the player's clock displaying the correct real-world time.
Therefore, its real-world runtime is presumably a few seconds shorter than the other 2 releases, but it probably has exactly the same total number of frames, just with a slightly faster playback speed.
Background re: drop-frame timecode:
Disclaimer: As far as I can tell, there is no formal standard for drop-frame timecode at 24fps, but nevertheless it is sometimes used. Below is my understanding of how it works, to the best of my knowledge, but I cannot guarantee the details are correct.
For any "24fps" Blu-ray that uses drop-frame timecode, the clock drops 1 timecode frame for every 1000 frames of picture (i.e. 1 frame in approx. 41.7083 seconds).
e.g.:
with non-drop-frame timecode, it goes:
(hh:mm:ss:ff)
00:00:40:21
00:00:40:22
00:00:40:23
00:00:41:00
00:00:41:01
with drop-frame timecode, it goes:
(hh:mm:ss:ff)
00:00:40:21
00:00:40:22
00:00:40:23
00:00:41:01
00:00:41:02
(i.e. it misses out the "00:00:41:00")
Note that with drop-frame timecode, it doesn't actually miss out any frames of picture, it's just the clock that jumps.
This means that for a playback speed of 23.976fps, the timecode adjusts to (approximately) keep to real-world time.
With drop-frame timecode, the elapsed time as displayed on the player is increased by about 3.6 seconds per hour, compared with non-drop-frame timecode.