So I'm not sure if within the 15 pages someone went to check, but I remembered about the
press release for the E3 trailer, and found it was also
updated with the PSX trailer. It's much higher quality than either EN or JP 1080p Youtube videos (a MP4 that's 263MB vs 55MB from Youtube).
Compare these screenshots, which I went frame-by-frame in a program called VirtualDub for (Press 1st/Youtube 2nd):
(notice less blur and while not HUGE increase, there is more detail in the threads of Biggs' shirt)
(Barret's arm has less muddled detail)
(lots of motion in this scene, most of the detail of the platform is lost on Youtube)
(...well you get the idea...)
Best to view the comparison full-screen, if you can (
link to gallery for mobile users?.
With that said, I feel this would be best to use for screenshots and whatever else until the next trailer.
Still wish to find this press release in Japanese (and that should then have the absolute highest quality trailer and future videos).