Quote:
Originally Posted by hariseldon
Can't help with the technical how/why, but 1080i/50 to 1080i/60 can be pretty close. I've always assumed it's similar to the 3:2 pulldown technique changing 24fps film to 1080/60i TV. The Monty Python Flying Circus discs were taken from PAL sources up to 1080/50 in UK for the UK discs and 1080/60 in the US -- I have watched a couple of those back to back on Native Rate and couldn't tell the difference at all. From folks that have watched those side by side, the difference is negligible when done properly (unlike the screwed up Downton Season).
Moving to 1080p/24 is a different animal though as long as it's pitch corrected I have a hard time telling the difference on the video and dialog even watching side by side. Occasionally music sounds odd since the tempo is different even if the pitch is correct.
Everytime I try to read about the actual technique I end up dizzy. I can do the math part, but I just don't know enough about video editing and the software to put it all together.
|
I'm unusually sensitive to pitch shift and changed speed. I've had to return some things, like the US Prime Suspect BD set, because I couldn't deal with the altered audio and video.
3:2 pulldown looked awful, and gave everything that "soap opera" effect, but at least it maintained native speed, as far as I know.
It's funny, I grew up thinking all British TV had the "soap opera" look, from watching shows on PBS as a kid, until I learned that it was merely an artifact of the PAL-NTSC conversion.
I try to buy British DVDs and BDs of British programming, as a result.
I would assume the UK BDs of Downton run at the native 25fps, but I haven't looked into it. There are, occasionally, British BDs that are slowed down so they can be 1080p.