BIG TUTORIAL - How to fix video posterization (banding) - and a lot more
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00:00 Explaining the problem - "partial" video causes doubled and skipped values.
14:48 Trying to use digital noise to reduce banding (bleh)
19:08 Experimenting with other textures
23:34 Interlude: Nearest neighbor scaling: It's important, and Premiere doesn't have it.
19:08 Experimenting with other textures (continued)
28:47 Key insight: Order of operations matters!
30:44 Fixing banding in a video that was already rendered
32:39 Interlude: bicubic scaling vs. nearest neighbor
35:46 Fixing banding in a video that was already rendered (continued) Also, how to key a gradient and other complicated stuff
If you want to try this yourself:
Here is the source footage that I will be fixing:
• *Gradient banding fix FINAL SOLUTION ...
Here is my pixel overlay:
https://www.dropbox.com/s/8t1oxu7kh0n...
https://www.dropbox.com/s/0j2s1ottsyi...
Here is a nearly perfect Bionic Beaver background
https://www.dropbox.com/s/6r21fof958b...
52:18 - Photoshop's fancy RGB dithering
1:06:13 - Discovering that YouTube uses different bitrates in the same resolution
(FYI, banding can also be called "posterization.")
Potentially interesting/useful links:
http://nomorebanding.com/cache
https://graphicdesign.stackexchange.c...
/ how-to-create-noisy-risograph-style-gradie...
http://shunotes.blogspot.com/2015/12/...
http://www.loopit.dk/banding_in_games...
https://forums.adobe.com/message/1090...
Playlist of all Taran's tests: (won't be very useful to anyone else, since you don't know the ingredients)
• Testing stuff
In particular, this video was very useful for me to figure out how different sizes of the faux-pixels are affected by different resolutions in YouTube: • 2nd Pixel overlay replicate test - b... (I'd watch the whole thing with a different resolution each time)
Testing lots of different kinds of overlays: • Video
Me and the captain arguing about "partial" video:
/ 1080232381296963584
Continued:
/ 1092850961909932032
Later, he admitted he was wrong, HAHAHAHA