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moonfoxy196
Participant
September 12, 2017
Question

White background to transparent?

  • September 12, 2017
  • 2 replies
  • 56495 views

i tried EVERYTHING! Im new to After Effects and I have an animation with a solid white background. I need it to get transparent. How do I do this? Please help!

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2 replies

Andrew Yoole
Andrew Yoole
Inspiring
September 12, 2017

You've provided very little information or specifics about what you have or what you need.

What are you trying to make?  What is your end result going to be?

If there are transparent areas in your composition, you can see them in the preview pane by switching on transparency grid view.

If you are trying to render video that retains transparency information, you need to understand what an Alpha Channel is.  Start here:

Use alpha channels, masks, and mattes in After Effects

    M
    moonfoxy196Author
    Participant
    September 13, 2017

    I am making an simple animation of a walk cycle of a dog, and a simple background. The only thing that I need is to turn the white background to the animation, transparent so I can put it over the other background. It's all set up, but I just need the animation to overlay the background. Also thank you!

    Andrew Yoole
    Andrew Yoole
    Inspiring
    September 13, 2017

    How is the walk cycle created?  In Photoshop?  Illustrator?  Within AE itself?

    If your content has a fixed white background and there is very little other white in the images, it may be as easy as keying the background out with a  Linear Color Key.

    It would really help if you could post a screen grab of your composition with all layers visible in the timeline.

    Roei Tzoref
    Roei Tzoref
    Legend
    September 12, 2017

    In the output module make sure you choose a format that supports alpha. It should have the option on channels: "RGB+Alpha". For example: Quicktime Animation supports Alpha.

    now, it should be obvious you won't "see" the transparency of your video playing on a regular player (it will show you the background color instead). If you want to make sure you exported your video with transparency, then import it to Ae, click on it twice and toggle the transparency grid.

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