roVideoScreen is being deprecated so you should not be using that.
You should be looking at example channels for Scene Graph channels and modify/reconstruct them to suit your workflow.
As far as what you are looking to do, with Scene Graph you have 100% control as to how your app works so you can use Roku Components or Build your own interchangeably.
Here are a few components that should help:
- https://sdkdocs.roku.com/display/sdkdoc/Video
- https://sdkdocs.roku.com/display/sdkdoc/Rectangle
- https://sdkdocs.roku.com/display/sdkdoc/Label
- https://sdkdocs.roku.com/display/sdkdoc/RowList
- https://sdkdocs.roku.com/display/sdkdoc/PosterGrid
Here is a link to the pre-certification checklist which is what Roku will be reviewing your channel against.
https://sdkdocs.roku.com/display/sdkdoc ... Check+List
Tyler Smith