All transitions are giving me a black screen

Hi everyone,

I used to used Davinci Resolve 14 and I never that this problem.
In between I formatted my laptop and downloaded the new Davinci resolve 15 but it seems like there's wrong with the transitions.

First the quick transitions that you set using these little white tabs in the timeline don't do the attended effect. Instead of a fade in & out effect I just get a black screen. As soon as I pass the time I set the transition the video come back

Then I tried to add a proper transition from the effect library and exactly same behaviour when it reads the moment where I added the transition the screen goes black.

My system is clean as I just formatted it and installed a clean windows 10 and my davinci installation is also clean as I just installed it and didn't mess around with the settings or anything so to me it sounds like this is a bug with the new version.

Has anyone been experiencing the same issue? Any idea how to fix this?

Thank you

Hello everyone,

I post again on this topic because I actually have the same probleme with the last version of Davinci.
It's a big trouble to me because I'm working on a big movie and my deadline is soon.
Until today I wor on other point of my edit but today after searching for a long time to fix this trouble I decided to ask your help.

I'm not a beginner on this software, I had never been this trouble until I download the Studio version of Davinci 15.

Before, on the beta version it was fine. Today I have update the software with the last version but the problem is stay here...

I'm sorry for my basic english, I am french but I hope you understand me as well as possible.

Here is an image to show my trouble, it happened for all video transitions :



If you need more information, just ask.

I'm working on :

iMac (Retina 5K, 27-inch, 2017)
Intel Core i5
3,4 GHz
Radeon Pro 570 4096 Mo