Purpee, please understand that there are different issues here.peerpee wrote:If the film was shot on HD at 50i but was theatrically presented on 35mm at 24fps (such as Jia's THE WORLD, which I produced for MoC Blu-ray), then it makes a great deal of sense to go 50i > 25p > 24p (which is what we did).pro-bassoonist wrote:And it is not a "correct" route to go from 50i > 25p > 24p. Assuming that the "master" they used was 1080/50i, which is what you speculate, the correct route would have been to just have a 1080/50i transfer.
Quite a number of films have been shot at 50i/25p and theatrically displayed at 24fps. Because the HD master is the source for the Blu-ray, the question is: do you try to mimic the theatrical experience, or do you slightly cripple the Blu-ray by releasing it in 1080i which may cause problems for a fraction of the audience?
Criterion have regularly taken 50i/25p masters (ANTICHRIST, BERLIN ALEXANDERPLATZ) and slowed them to 24p because of 1080i incompatibilities on certain Blu-ray players/displays. Again, ANTICHRIST and BERLIN ALEXANDERPLATZ probably played theatrically at 24fps, so you can't definitively say one way or the other that something is "correct" or not.
For Blu-ray authoring options it seems that ultimately, 24p regularly wins, due to these incompatibilities with 1080i.
The elephant in the room here is that 50i/25p keeps cropping up due to Japanese HD television originating at 50i in the 1990s and the entirety of European television broadcasts still stuck at 50Hz/50i.
1. Your 'dilemma' as a producer is whether to present the film as it was natively shot, in the case you note above in 50i, or as presented theatrically. In other words, you could choose to go 50i or 24fps. It is your decision to make.
2. Criterion did not face your dilemma. Because 1080/50i is not standardized in North America. What this means is that 1080/50i compatibility isn't an official tech spec for U.S. players. (In fact, as far as Region-A Blu-ray players are concerned, if I recall correctly only first generation PS3s produced in Hong Kong, which is Region-A territory, had legitimate 1080/50i playback capability, because 1080/50i and PAL were used there to a certain degree).
The fact that you had some manufacturers adding chips that would automatically convert 1080/50i to 1080/60i/1080p on some Blu-ray players sold in the U.S. 3-4 years AFTER the high-definition format was launched does not mean that "certain players" were/are SIMPLY having trouble processing 1080/50i content. In the U.S., 1080/50i is not standardized, which means that it is not used. (We also had various DVD players, such as the popular CyberHome, that would convert PAL to NTSC on the fly, but PAL, as you know, is not utilized in the U.S.).
All of the above immediately dictates that Criterion have to adjust and present content either in 1080/60i (which they have been doing with some releases of silent films) or 1080p.
As far as Faust is concerned, you have a very similar situation. Whether it was shot in 1080/50i or not it does not matter, because ALL UK Blu-ray players and TV sets can handle 1080/50i content. 1080/50i is standardized in your country.