I'm updating a project from 5.5.9 to 6.0. I've tried multiple ways now and the problem with the video still remains. They won't show as video texture. It works well in fullscreen, so the videopath is fine. I'm testing on Android.
I've tried to remove the old vuforia version like described here (https://library.vuforia.com/articles/Solution/How-To-Migrate-a-Unity-Project) and also another try was to just import the new 6.0 unitypackage.
The video area/plane is just white and the "busy" icon is shown. I know this is a little vague, but I hope you devs can point me in the right direction what I could test.
I also made a test project and setup the 5.5.9 version. Then I just imported 6.0 and that works. So this "just import" seems to work for Android in a clean/sample project. But not in my App. Also there could be problems later for iOS when just importing the new unitypackage (https://developer.vuforia.com/forum/unity-extension-technical-discussion/migrating-vuforia-5-unity-project-v6#comment-55921).