Why doesn't the custom layout take effect even though I specified StreamId?

There may be the following reasons:

1. Horizontal layout, vertical layout, floating layout

• When whiteboard recording is enabled and there is a whiteboard in the room, StreamId is invalid, and the whiteboard image always occupies the main view.
• When whiteboard recording is enabled and padding is set, even if the whiteboard stream is interrupted, StreamId is invalid, and the whiteboard window will be retained, displaying the background image.
• The specified StreamId does not exist.

2. Custom layout

• If there is a whiteboard in the room and a window with ViewType = 2 is specified to display the whiteboard, specifying StreamId for this window is invalid.
• When whiteboard recording is enabled and padding is set, even if the whiteboard stream is interrupted, StreamId is invalid, and the whiteboard window will be retained, displaying the background image.
• The specified StreamId does not exist.