[Unmult Plugin After Effects Cs6 Crack
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Third-party unmult plug-ins for After Effects are used to create a composite with an alpha channel of a layer based on luminance or brightness. They're often used instead of composite modes like Screen that don't create an alpha channel. Alpha channels were discussed in a companion post recently, Alpha channels: premultiplied vs straight.
You can also use Xmult from Fandev, which is also free, and 32-bit capable for Mac and Windows. It still works, and comes with a Blend with Original slider. Also, Video Copilot Color Vibrance, a free new plug-in, does the same and lets you adjust color and alpha at the same time. Here's video backgrounders on Red Giant Unmult and Video Copilot Color Vibrance.
Mark Christiansen has a good succinct advice and discussion of alpha channels in his book Adobe After Effects CC Visual Effects and Compositing Studio Techniques. An excerpt of an earlier edition is still available as Alpha Channels and Premultiplication, part of a chapter on Selections: The Key to Compositing in Adobe After Effects 7.0. It's updated and more readable in the current version of the book, now for Creative Cloud. That chapter is just one reason to have the book handy.
Another excellent resource is the Channel filter section of After Effects: Insight into Effects with Chris Meyer and Trish Meyer on Lynda.com. There you get an entire context of video tutorials for Calculations, Channel Combiner, transparency & mattes, Remove Color Matting, and more. There's even movies on how to use Channel Combiner (an 8-bpc effect) to process filters in YUV (and back after the effect), or convert Straight alpha to Premultiplied for filters that crunch some alpha channels. With both processes, Channel Combiner instances sandwich the process in question (to convert back to straight alpha, check the Invert box on the bottom duplicate).
Chris and Trish also have discussion in Creating Motion Graphics, and more directly at Artbeats in Managing Transparency Part 1 (simple techniques to get rid of ugly black fringes) and Managing Transparency Part 2 (dealing with backgrounds of different colors, plus edges. You'll get great bang for your buck by spending time with these two PDFs.
For a brief period in the CS5 era, Knoll Unmult was unavailable even on the Mac, and users gravitated to a 32-bpc Adobe solution, 'Alpha from Max Color', a Pixel Bender filter from Adobe. Pixel Bender shipped only with CS3-CS5. If you can find Pixel Benders and really want to use them now, Pixel Bender Accelerator from CROSSPHERE.Koizum runs PB filters natively using the GPU of your video card.
One recipe and preset you might try is Removing black or white from layer/footage, deMult/unMult at Motion Graphics Exchange. There you can download a free AE preset that does this, staying in 32-bpc color:
Todd Kopriva posted a similar approach from Steve Holmes that describes the use of the Remove Color Matting and Shift Channels effects to remove black backgrounds from stock footage of fire, smoke, rain, etc. In his handy summary of Holmes' 15 wide-ranging Artbeats podcast episodes, Todd explained Steve's approach:
There were several nice video tutorials in the recent post on alpha channels in AE. If you haven't tried it already and want to a good workout, check out Lens Flare in AE and Premultiplication Explained by Ben Rollason. It's pretty clear, slightly different, and pays off more for those who keep focus on the material as it advances.
Premiere stopped exporting with one second left. I did a in to out export but it had a black frame at the end , I read this could be a problem. Anyways Premiere crashed after that and it would stop loading at unmult 64 aex which is a Rd Giant plugin. Tech support updated Premiere but my Sapphire transitions went to video effects. Tech support recommended to use Premiere 2018. The only thing is that 2018 is awful with titles. Has Premiere 2019 being this buggy?
Well the thing is that every time I install an update, something stops working. I had the software programmer of a purchased extension work 45 minutes in AE to reinstall and troubleshoot his products. 2018 work like a charm except for the MOGRT titles but 2019 screws third party plugins. In another post Adobe support basically erase all versions of Adobe a reinstall them, the next step was to format this guy computer. Thanks for the answer, I will continue working, at least I know I can rely on Premiere Pro 2018.
Would it possibly go Application - After Effects - Plug-In (and then i could create the 7.0/MediaCore files? I'm not going to try it as i don't want to mess anything up, but that seems to be were my after effects plug-in's live....
After Effects 2024 is no longer revealing the alpha channel with layer mode is set to Add or Screen. It WILL reveal the other layers within the project below a layer set to add or screen, but NOT the transparancy when there is no solid underneath. Same effect in render.
The answer to anyone using Maxon / Red Giant apps is the uni.unmult plugin/effect found in RG Utilities (Maxon plugins). Since After Effects 2024 stripped access to Knoll Light Factory which had unmult built in, this is the best workaround to make Real Lens Flares work while perserving an alpha channel.
Amongst my collection of compositing elements such as fire and smoke, there are some clips that have been filmed or rendered against a black background. To remove this background (i.e. make it transparent) such that there is no residual dark band around the element, I have very successfully used After Effects with either the built-in "Remove Color Matting" effect or the Knoll "Unmult" plugin. In Vegas however this is more troublesome, as Universe 2.0, which includes Unmult, is no longer free and the built-in "Channel Blend" effect sometimes requires lots of tweeking to get right especially for multi-colored elements (though it works really well for fire). Anyway, does anyone know of a free plugin for Vegas to unmultiply the background color?
Thanks for the suggestion OldJack, but I think that you (and perhaps others) might not be quite familiar with image background premultiplication problem and how Chroma keying is completely different from Unmultiplication. The latter is necessary where footage is pre-multiplied with another color (i.e., part of the alpha information is contained WITHIN the RGB channels). This typically happens with fire, smoke and illumination assets (glowing balls of light) where the subject matter is partially translucent.
Notice that keying incorrectly leaves a dark outline around the flames, while unmultiplication correctly reconstructs the original flames as they were recorded. Again, keying and unmultiplication are different mathematical operations.
In Universe the old plug-ins are still there as "legacy" plug-ins. The legacy ones should(?) still be free as they were before. You may have to do an extra step to install the legacy plug-ins. Can't say for sure but I see the legacy plug-ins.
"Customers who were using the Universe plugins before June 28,2016 will have access to the legacy plugins for as long as they use Universe. New users as of June 28 will only have access to the new Universe 2.0 lineup."
"Yes, as long as you signed up for the Universe download before June 28, 2016 and the release of Universe 2.0, all the free plugins will be located in the Legacy plugin group, and you may continue to use them."
You'd just have to care for the black level is zero. In the pic posted above the black level is raised a bit which would break the compositing math, so you'd need an fx like "Levels" to correct black level before.
It's correct though you won't get desired result with Vegas chroma keyer. It isn't best tool for this certain job. Right as Peter mentioned above, in this case it is not a matter of how you'd tune the chroma keyer but a matter of the math needed to work in the correct way. Chroma keyer use a different math.
@Quitter: Chroma Keying is NOT what I want, as there is no way that it can unmultiply the background color regardless of the settings. Mathematically it is not the same (take my word, my doctoral thesis is in computer vision).
If you look at the first value in the last row you will see that I assign the red channel value to the Alpha channel to make the fire visible (revealing both solid and translucent regions) but leaving the background transparent.
If you have never used this effect you really should give it a try (especially those folks who keep suggesting the use of Chroma Keying). Unfortunately the vast majority of users do not understand what this effect does.
I thank all of you who have made suggestions to me. However, my problem is that I very specifically need an unmultiply function (not from Universe) that works on both red-containing assests like fire and smoke as well as on multi-colored assets like glowing balls of light (and please do not suggest Chroma Keying).
@Marco: Yes, you are correct that applying the Levels effect to crush the blacks and then compositing (with either Screen or Add) comes very close to doing the job. I have used that many times and it works in a great many cases, but not for all. For the tough ones, I switch to After Effects where I unmultiply the background and render a straight alpha, which I then use in Vegas. I can continue bouncing back and forth between appications, but it would be really nice to do this all in Vegas.
@DonaldT: Thank you, but again, mask generation is mathematically not the same as Unmultiplication. Using a Vegas luminance mask of the fire on one track multiplied with the track below of the original black-backgound fire yields incorret results as can clearly be seen below:
The first image is the correctly unmultiplied fire, while the second image is the one multiplied by the luminance mask. Again note the incorrect darker edges of the fire. In addition to not yielding correct results, the mask approach requires two tracks while the unmultiplication approach is merely one effect dropped on a clip with no addtional tracks or track settings.
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