V2 is black ?

Hello,
Sorry but my english is not very good. So I thank the online translation;)
I created a project with 4 video tracks
V1 and V2 are videos that I cut
V3 an image that I have shrunk (it’s a logo over the entire length of the montage)
V4 transparent text
When I read the montage or export it v2 is black, no picture.
Can someone please help me ?

I think you need to post a screenshot of your timeline or upload your project for someone to be able to help with this.

Hello,

Thank you for taking the time to answer me

Click the V4 track header and view Properties. What is Blend mode set to? It was probably changed to None, and you want Over.

V4 is on “superposition”

What I don’t understand is that if I remove V4, my video plays perfectly

Superposition is the same as “Over” in English.
I do not know. I do not reproduce your problem from your screenshot. Maybe you have filters on V4 track or the jpg that is causing the problem. Maybe you have filters on the clip on V2 that is causing the problem.

What I don’t understand is that if I remove V4, my video plays perfectly

I just did a test with another image, obviously the concern comes from my image.
Sorry to have disturbed you.
Thank you for your patience
Good evening.