Luma Touch Support Forums

Welcome to the Luma Touch community forums, a great place to get help and share ideas with other users. The registration code can be found by emailing
It is currently Sat May 08, 2021 1:09 pm

All times are UTC-07:00

To contact us directly, please use our support page at

LumaFusion 2.4.4 is now available in the App Store

Post new topic  Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Alpha blend mode issue
PostPosted: Wed Mar 24, 2021 12:04 pm 

Joined: Wed Mar 24, 2021 11:57 am
Posts: 1

I am looking for a way to work around a problem I am facing. Normally I'd say that precomposing would help, but LumaFusion does not provide that option.

In Detail:

What I want to do is this: (it starts at around 1min, the problem I am facing in LF is at 1:30)

I converted the Transition Prores4444 file to HEVC with transparency. The Alpha channel is there and I can see this in LumaFusion.

It looks to me that the effect would work the same way like in the FCPX tutorial. Only problem is that an alpha stencil stencils through all clips beneath it. So I see only black in those stenciled areas. What I need is to only stencil one clip underneath so I can see the video on Layer 1.

Maybe more experienced people here have an idea how I could tackle that problem. Thanks in advance!

PostPosted: Thu Mar 25, 2021 7:33 pm 
User avatar

Joined: Fri Apr 06, 2018 2:44 pm
Posts: 252
See if this helps:
You'll need to do an additional conversion, making the transparent are white, and a second render, but you'll end up having the same effect.
Screenshot 2021-03-25 222758.png
Screenshot 2021-03-25 222758.png [ 1.25 MiB | Viewed 179 times ]
More examples here:

Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 2 posts ] 

All times are UTC-07:00

Who is online

Users browsing this forum: Bing [Bot] and 2 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited