After Effect - how to export to mp4 with transparent background

[marcelina_7131]

Hello guys, I am trying to export from AE with a transparent background logo in 3D to MP4 format.

It's not working with RGB + ALPHA, only separetly - one file RGB and another alpha... I want to have it as one in MP4 format, any tips?

[kglad]

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

<"moved from cc desktop">

[Rick Gerard · Accepted solution]

The MP4 format supports RGB only. You will have to use another format if you want RGBA. 

The lack of an alpha channel is due to file size and compression algorithms. When you need an alpha channel, you add a minimum of 8 bits of data per pixel. Standard players also do not support all four channels.