# Premultiplied Alpha Movie Render Graph (MRG)

**URL:** <https://forums.unrealengine.com/t/premultiplied-alpha-movie-render-graph-mrg/2451790>\
**Category:** Rendering\
**Tags:** movie, unreal-engine, question\
**Created:** [April 11, 2025, 8:56pm UTC](https://forums.unrealengine.com/t/premultiplied-alpha-movie-render-graph-mrg/2451790 "2025-04-11T20:56:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Prism\_Games](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Prism\_Games](https://forums.unrealengine.com/u/Prism_Games)\
**Post date:** [April 11, 2025, 8:56pm UTC](https://forums.unrealengine.com/t/premultiplied-alpha-movie-render-graph-mrg/2451790/1 "2025-04-11T20:56:26Z")

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Hi there! I’m using the new movie render graph to render out a few different layers. Each layer consists of a visible object, with the rest of the environment set as a holdout.

When I bring the layers into DaVinci, I’m getting a dark halo around the edges of each layer. I have a novice understanding of how pre-multiplication works with the alpha channel in Unreal, and I’m wondering if this is expected or if there is a way I can get a cleaner alpha?

I followed [@comlys](https://dev.epicgames.com/community/api/user_profiles/tab-redirect/about?discourse_username=comlys) amazing [tutorial on you tube](https://www.youtube.com/watch?v=8o2yaZzfHCA) for my node set up.

Thank you in advance for any help you can provide!

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/a/4/7a4d70b1d652bfef5438ddb8ce155a8bfe98b0ad.jpeg)

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/4/9/d491a9282c801b0e7e71b05247e5f2a536c94ecb.png)

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/b/1/cb1e0b724a38b79f528a467b56c64c73c7d587ef.jpeg)

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**Author:** ![comlys](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/comlys/32/998665_2.png) [@comlys](https://forums.unrealengine.com/u/comlys)\
**Post date:** [April 12, 2025, 12:29am UTC](https://forums.unrealengine.com/t/premultiplied-alpha-movie-render-graph-mrg/2451790/2 "2025-04-12T00:29:30Z")

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Are you holding out the ball from your logo/bg and vice versa? If so you would want to use the add/plus operation to composite the layers.