UnMult for After Effects

UnMult for After Effects

unmult plugin

Download UnMult v1.2 for After Effects and Premiere Pro on Windows and Mac, a free and essential plugin that instantly removes black backgrounds from video素材 with a single click. Perfect for working with light effects, lens flares, fire, smoke, and any footage shot on black—creates clean alpha channels without the need for screen/blend modes .

Key Features of UnMult v1.2:

• One-Click Black Removal: Instantly remove black backgrounds from any footage or效果素材 with a single click—no more fiddling with blend modes
• Alpha Channel Generation: Automatically creates proper alpha channels for素材 originally on black backgrounds, enabling normal compositing workflows
• Perfect for Light Effects: Ideal for lens flares, sparks, fire, smoke, and other效果素材 that are typically provided on black backgrounds
• Better Than Blend Modes: Often produces cleaner, more accurate results than using Screen or Add blend modes, especially for complex素材
• RGB Unpremultiplication: Works by “unpremultiplying” RGB channels to restore full color saturation while matching alpha attenuation
• Non-Destructive Processing: Modifies pixel values to use semi-transparent alpha while maintaining visual appearance of the original效果
• Cross-Platform Support: Fully compatible with both Windows and Mac systems, including native Apple M1/M2/M3 chip support
• Broad Application Compatibility: Works seamlessly in After Effects, Premiere Pro, and Media Encoder 2021-2025
• Completely Free: No cost, no watermarks, no limitations—just essential functionality for every motion graphics artist

Perfect For:

• Motion graphics artists working with stock light effects and lens flares
• VFX compositors integrating fire, smoke, and particle素材
• Video editors who frequently use素材 libraries with black backgrounds
• Anyone tired of fighting with blend modes for black-background素材
• Studios looking to streamline their compositing workflow

System Requirements:

• Adobe After Effects 2021-2025
• Adobe Premiere Pro 2021-2025
• Adobe Media Encoder 2021-2025
• Windows 10/11 (64-bit) or macOS (Intel and Apple Silicon native)
• 4GB RAM minimum (8GB+ recommended)
• 1MB available disk space

Installation:
Copy the plugin file to your Adobe Common Plug-ins folder:

• Windows: C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore\
• Mac: /Library/Application Support/Adobe/Common/Plug-ins/7.0/MediaCore/

Note: UnMult is developed by iBelieveInSwordfish and is completely free to use . It’s particularly useful for light effects素材 that need to be composited with normal blend modes instead of screen or add . For best results, use with素材 that have pure black backgrounds .

Remove black to add an alpha channel to a lighting effect

The UnMult plug-in generates an alpha channel for a lighting effect, allowing it to be applied to your footage using the Normal transfer mode in After Effects or another program. It does this by un-premultiplying the RGB to reach full saturation and then attenuating the alpha by the same amount.

UnMult assumes your lighting effect (a lens flare, for example) is applied to a black solid with a fully opaque alpha channel. After applying UnMult, the lighting effect may appear unchanged, but the pixel values will have been modified to use a semi-transparent alpha.

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