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auto white balance

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Chris Wright
auto white balance
on Nov 21, 2010 at 8:51:19 am

I made a fully automatic white balance after effects project. it uses part of rebel cc then finds the color cast and automatically removes it. it also fixes cameras with auto white balance on changing too much in a shot.

ae cs3 aep
http://www.mediafire.com/?cn91hzp79q4cp4f

http://technicolorsoftware.hostzi.com/


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Chris Wright
you'll never had to do post production again
on Nov 21, 2010 at 9:11:14 pm

if you'd like to see how well it works, apply rebel cc to test_wb comp and apply wiggle(1,.2) to set grey. The white balance will go absolutely bananas, but the final comp will still work perfect. Which makes you wonder, why didn't adobe make this plugin 10 years ago?

http://technicolorsoftware.hostzi.com/


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Jim Arco
Re: you'll never had to do post production again
on Nov 22, 2010 at 1:20:53 pm

"....makes you wonder, why didn't adobe make this plugin 10 years ago..."


I have never understood why there has never been a real simple "white balance" tool plugin OR

Why there is no "display the embedded timecode/date?"

...some patent/copyright issue maybe?


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Chris Wright
Re: you'll never had to do post production again
on Nov 24, 2010 at 8:57:30 pm

I would love to hear if my auto exposure is helpful or feedback on improving it.


also, I was looking at some really old footage and it doesn't use gamma, it uses like huge blocks of black. That's a new one to me.

and to your other question
"Why there is no "display the embedded timecode/date?"
http://forums.creativecow.net/thread/2/990824#990826

http://technicolorsoftware.hostzi.com/


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Jim Arco
Re: you'll never had to do post production again
on Nov 25, 2010 at 2:45:15 pm

"...it doesn't use gamma, it uses like huge blocks of black..."

I've got some really old stuff - EIAJ, VHS, 3/4-inch, and even 1-inch, but I've never seen what you're referring to. Can you post a sample somewhere?


Thanks for the timecode info. There have been third-party tools that would display or burn-in the file's original time/date. But I never guessed that this was one of those places where there were "plenty of standards to choose from."


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Jim Arco
Re: auto white balance
on Nov 22, 2010 at 1:15:20 pm

Chris,

I continue to be impressed with the clever solutions you come up with to solve what seems like the very problem I am currently working with.

This one works amazingly well. I have to admit, I am having a bit of difficulty understanding exactly HOW it works. I am guessing there is some expression that refers to the 'gg' comp, but I haven't found it yet.

In any case thanks for another great solution.

Jim


Any chance you could add a tool to even out the exposure variations as the camera's auto exposure tries to track changing light levels?


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Chris Wright
Re: auto white balance
on Nov 22, 2010 at 6:44:38 pm

it simply imagesamples the whole image, averages all the pixels and returns a 15% grey that gets put into a log lin function in the grey point. I'm currently working on an auto exposure. In the meantime, ae's color stabilizer in the past worked great for me.


also, I wrote a mouse program that moves farther the faster you twitch your wrist. It saves me from carpel tunnel.

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 22, 2010 at 10:53:00 pm

I added an auto exposure in midtones brightness. It's beta, but seems to work good. I am going to add frame smoothing to it after I figure out easing. until then, perhaps convert to keyframes and easy ease.

I replaced the download file so its updated.

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 23, 2010 at 12:51:50 am

another fixed bug. it was double gammafying. also, I added overiding control sliders. it's all 32bpc.

I replaced the download file again so its updated again.

http://technicolorsoftware.hostzi.com/


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Chris Wright
auto white balance- new overdrive mode!
on Nov 25, 2010 at 5:29:52 am

If you have some really bad footage where the exposure or sun changes really big, use the new gamma clamp slider which clamps gamma and then turns on black point restore mode. Still fully automatic!

http://www.mediafire.com/?11pae00grg9rhhx

http://technicolorsoftware.hostzi.com/


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Jim Arco
Re: auto white balance
on Nov 25, 2010 at 2:38:30 pm

Definitely would benefit from some frame-smoothing. I tried it on some old VHS footage (shot in low light with an old camcorder, so the footage was ...uhm, well, ...junk!)

I would sometimes see frames that flashed or had significant color difference from the rest. My guess is this is due to noise in the video. You might want to try blurring the layer that is used for the 'averaging.'

It is certainly going to save me a lot of time/effort. I'll have a bit more time this weekend to really try this out and let you know what else I discover.


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Chris Wright
Re: auto white balance
on Nov 25, 2010 at 3:27:20 pm

I really appreciate your feedback. You must have had really destroyed footage for it to trick my program. I spend a while trying to break it by ingesting 16mm, horribly underexposed video, so I'm definately going to go to archive.org to test furthur.

And sometimes the expressions disable themselves when you stop a RAM preview, because my computer is slow(I hate that!), so watch out for that in gg,exposure,finaloutput rebelcc levels,shadowhighlight.

Does the white balance and/or flicker perform worse with gamma clamping on?

And does convert to keyframes and easy ease help? That seems like a logical solution.

http://technicolorsoftware.hostzi.com/


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Joseph W. Bourke
Re: auto white balance
on Nov 25, 2010 at 4:04:02 pm

Is there a CS4/CS5 version in the works? Thanks.

Joe Bourke
Owner/Creative Director
Bourke Media


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Chris Wright
Re: auto white balance
on Nov 25, 2010 at 5:18:30 pm

it just uses sampleimage so it should work in cs4 and cs5. It's still in beta, so I'm still testing.

Anyone know how to keep expressions from disabling after you RAM preview? I might have to write a script gui that turns the expressions back on. Really annoying,:/

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 26, 2010 at 7:35:12 am

hitting Caps lock immediatialy after RAM preview STILL does not stop expressions from disabling themselves, but clicking on the blue ram slider seems to work.

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 27, 2010 at 4:41:46 am

here's an update that runs 20x faster, and doesn't disable expressions as easily which is nice now.

I tested it with some really bad 8mm color and it worked perfectly removing all flicker and balancing white. If you have some bad dark footage, the clamp needs to be set lower. If the program doesn't work with your stuff please post 5 frames and I'll see why it breaks my program, but hmmm, at this juncture, I can't really improve perfection.


ae cs3 aep
http://www.mediafire.com/?11pae00grg9rhhx

http://technicolorsoftware.hostzi.com/


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Jim Arco
Re: auto white balance
on Nov 27, 2010 at 11:35:48 pm

Chris,

Over the last 8-years or so, I have honed my After Effects skills quite a bit. Some folks have said I can take a blank tape and, with enough time, improve it to come out with a pretty good looking image. (OK that's an exaggeration.)


I've thrown some REALLY noisy, very dark footage at your project and it handled all of it well. I'm not ready to retire completely yet because somebody is needed to ocasionally set the gamma clamp lower.


But have a beer on me for some really clever work here. It's very close to the magic make-it-look-better button that people think is built into the software. Keep up the great work and thanks for sharing your efforts. It will save ME a lot of time.


Jim


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Chris Wright
Re: auto white balance
on Nov 29, 2010 at 9:55:34 am

here's a small update that is faster and more accurate. the sweet spot seems to be where the shadow clamp is strongest which means soon that will be auto too.

I was also thinking of adding contrast matcher so that low contrast and high contrast footage would match up.

ae cs3 aep
http://www.mediafire.com/?3dtevwalcec3qmn

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 29, 2010 at 9:56:32 pm

fixed a clip bug and now added the ability to have people walk under trees and be auto corrected.

added.

1. auto tree mode ( I really like this one :)
2. auto Saturation Compensator
3. auto Midtone Contrast

ae cs3 aep
http://www.mediafire.com/?kcrlcsnyscpuqm4

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 30, 2010 at 1:09:56 am

great news Jim, here's a really nice gui script that enables expressions in all comps after they get disabled. It saves me a lot of time.

http://www.redefinery.com/ae/view.php?item=rd_ExprTweaker

http://technicolorsoftware.hostzi.com/


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Jim Arco
Re: auto white balance
on Nov 30, 2010 at 1:56:46 pm

OK, I'm running out of superlatives. I think this might really be the magic "make it look better" button.

I like the idea of auto-tree mode - great for the pan-past-the-window stuff I often get. Is it always on, or have I missed the switch? (Not sure if I'd ever need to have it off.)

Saturation compensation was a good addition and makes a big difference for some low-end footage where the auto-whatever circuits drop the saturation in extreme exposure conditions.

Looks like all user adjustments are in the MASTER CONTROL SLIDERS. Not sure I understand the purpose of the 'shift channels' and 'channel combiner' filters in the 'exposure repair' comp.


The "nit-picking complaint" department:
The gamma clamp seems a bit fussy to me - still occasionally needs tweaking for very low-light stuff.

Needs a reset-to-defaults button for when I really get the adjustments messed up.


...and it needs a smack-the-cameraman button for those really shaky shots.


jIM


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Chris Wright
Re: auto white balance
on Nov 30, 2010 at 5:52:56 pm

-auto tree mode is usually on, its the shadow plugin with clip off so it raises the exposure. it doesn't really need to be turned off(I've never seen a reason to)

-I would notice saturation would get destroyed when the dark clip was raised up(probably because the camera didn't record colors in a dark environment. same with contrast. they are relative effects(change according to exposure)

-shift and channel are obsolete that never got deleted, haha(you found the eggs!)

-if the gamma clamp is too touchy,(you can divide it by more than 10) makes it easier to work with(lemme know if that's what you mean). I think its still manual for some things because how would you know that dark titles are what you want. I have to keyframe the slider.

-There is one thing, colored credits are way different than b/w credits(they don't get messed up.) So, haha. I haven't tried it but what if you put in hue/sat effect,sat=0 on the clip as a precomp, animation-convert expressions to keyframes, then remove hue/sat again.

-reset-to-defaults button, haha defaults? I don't even know what the defaults are! put that in 10.020.0303

-shaky shots can be fixed with virtualdub's free deshaker(fully automatic), AE's tracker, or any 3d tracking program. and my deinterlace script(slow and can get artifacts)

http://technicolorsoftware.hostzi.com/


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Chris Wright
Re: auto white balance
on Nov 30, 2010 at 11:21:18 pm

bad/good news...more updates!

1. made 20% faster by removing excess math functions
2. fixed bug in relative auto midtone contrast and auto saturation
now gamma responds linearly like celluloid film (I like this feature)

3. gamma clamp less sensitive (easier to tweak)

ae cs3 aep
http://www.mediafire.com/?fz0s3i85a45ou58

http://technicolorsoftware.hostzi.com/


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Joe Shapiro
Re: auto white balance
on Jun 22, 2017 at 7:38:20 pm

This may be a stupid question but... I haven't found any documentation on how to use the aep. I've opened it in ae and plopped my video in the comp but see the sample video has some controls on it. I'm an ae newbie though. Should it be obvious to me or are there instructions somewhere that I just haven't yet found?

------
Joe Shapiro
Director / Producer / Editor
323-456-3741

imdb.me/JoeShapiro
twitter.com/JoeSh


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Chris Wright
Re: auto white balance
on Jun 23, 2017 at 1:22:33 am

Right click replace video with your own on in
Media browser. Then make sure all hidden comp layers
Are Set to frame size of video.
if you enable the hidden text layer and scroll Gamma Clamp at gamma*10 so that the text box reads 25, it will
fix timelapse and old movie's flicker.


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