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halilc85750916
Participant
July 3, 2019
Question

Interpret footage - alpha settings are grayed out, not working in after effects

  • July 3, 2019
  • 1 reply
  • 3878 views

Hi! I am a windows 10 user.

I downloaded a stock video which has alpha channel option (it's written in the video description and also asked to my friend who has a Mac, he checked and confirmed that video has alpha channel)

But when I put the video into my project and open interpret footage window of it, the alpha settings are grayed out and I can't change anything.

Searched for a solution for more than 2 hours in adobe forums and all over the internet but couldn't find the solution.

Can anyone help please? Thanks in advance!

There is a short video that shows my problem:

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    1 reply

    R
    Community Expert
    Rick GerardCommunity Expert
    Community Expert
    July 3, 2019

    Check the footage properties by selecting the footage in the Project Panel and checking the thumbnail and the data. If there is an alpha channel it will show up there:

    Even high bit rate footage needs the plus sign. There is a good chance your footage looks something like this:

    This info is in the User Guide and can be found in the descriptions of the various UI panels in AE.

    Many times stock footage includes a black and white version of the footage that is used as a track matte to create transparency.

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