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A
Andreas3393529166h7
Participant
November 30, 2023
Question

Exporting videos with transparency

  • November 30, 2023
  • 1 reply
  • 5964 views

Hello,

I have a strange "problem" when exporting my project that I created in After Effects.
I am using the 2024 Creative Cloud.

 

I want to have the file in webm format in the end. Small file size and transparent background.

No matter what format that supports an alpha channel does not produce the desired result.

 

- If I use QuickTime (ProRes 4444 + alpha) for the first export, there are different results depending on which codec I use. The result has a) no video (only visible through a conversion - I'll come to that in a moment), b) an interpolarity of the colors (+ background).
- A direct export to Webm gives the same result as the conversion from QuickTime ( a) ) - it is not transparent and the graphics used are given white backgrounds for their own area.
- An export to avi with active alpha channel has the same result as with QuickTime ( a) )

 

 

I used the following methods for the export:
- Direct AfterEffects
- Via Premiere
- Via the Media Encoder

 

Same result everywhere. Tried on two devices (Windows).

 

What am I doing wrong? I have exported QuickTime videos with transparency in the past without any problems.

Thanks in advance!

 

This topic has been closed for replies.

1 reply

D
David Arbor
Inspiring
November 30, 2023

Without seeing your timeline, it's hard to say for sure, but it sounds like you don't actually have transparency in your comp. If you toggle the Transparency Grid at the bottom of the Composition panel in AE, do you see the grid, or are you expected transparent areas still solid?

A
Andreas3393529166h7Author
Participant
December 1, 2023

Thanks for your answer!

 

I only use one single png-file for the animation and so I see the grid. There is no other file with a solid background or a layer.

 

[Profanities removed by Moderator]

 

Warren Heaton
Community Expert
Warren HeatonCommunity Expert
Community Expert
December 3, 2023

Sorry for the late reply. I've been on a business trip. 

 

Well, what Richard suggested works perfectly. I'm still wondering what was wrong with the other settings, but the result is now as desired. I will stick to this way for the future.

Many thanks to both of you!


@Andreas3393529166h7 

Whatever you are doing manually must be RGB only rather than RGB + Alpha.

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