i'd like to have a little bit control over the transparency of the videomaterial. is there any way to prepare a shadergraph unlit shader and use it with the videomaterial.

randomly, the app does not work after small changes in Reality Composer. Small changes like scaling a object a tiny bit. to fix the error, i have to change another element in reality composer and hope for the best. if this does not help, i change (transform) something else, or deactive/activate something to get the project working again. I can't see a pattern why the Reality Composer Project sometimes gets in a state where it does not compile anymore.

the timeline editor feels often unfinished. Setting the time cursor to a different time is often not reflected in the preview. You either have to click a clip or wait. sometimes the cursor even disappears, eg. when switching tabs to shadergraph Not being able to select and move multiple clips is missing. There is also no snapping to clips or time cursor as found in other tools. And then there is the timeline compile bug https://developer.apple.com/forums/thread/810868 The timeline as it is, is a good start but it definitely needs some more love to be on par with other commercial tools like Unity or After Effects.

Is there a way to stop a Reality Composer Timeline ? And restart it later on. For me it looks like you can only start a timeline via notification. and related to it. i have the issue that if the notification to start a certain timeline happens twice or more, it looks as if the timeline actually plays multiple times and animations start to glitch and jump. what is best practise here to avoid this.