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Post #1325337

Author
phoenixobia
Parent topic
Info: Gigapixel AI vs infognition Super Resolution / What to use to upscale SD to HD or 4K
Link to post in topic
https://originaltrilogy.com/post/id/1325337/action/topic#1325337
Date created
16-Feb-2020, 3:00 PM

FrankB said:

The speed of a hand-made IVTC in avisynth (using SelectEvery) is lightning fast. But I …

Interesting. Makes sense. I just don’t know scripting and how to learn to do it. But I know it’s great.

This ugly pulldown-thing that you have with NTSC (I am lucky to live in PAL region) is produced in different ways…

PAL Has 2 really good benefits, 1 as you mentioned not having this ridiculous interlacing issue with film, 2 it has more horizontal lines of information for the picture. But the big downside is the frame rate when it comes to 24fps film, that shift of speed and change of pitch in the audio after conversion to 25fps is so noticeable and annoying to me. I know how to convert a PAL source back to progressive 23.976fps and change the audio speed to match the new framerate to reverse this effect but when audio speed becomes slower, audio quality decreases to some extent because it goes from high pitch to low pitch.

it’s fields that are added - as you know of course

Yes, I meant fields combed as one frame.

film --> scanned with pulldown (telecined) --> stored really uncompressed or losslessly compressed --> IVTCed
would give you 100% progressive frames back, that’s right.

Yes, Laserdisc is uncompressed because it’s analog, correct?

These look damned good! One could critisize many things, but…

Exactly, It may not be perfect and there are still issues or limitations but what it’s able to achieve is incredible. 😃