qmlVideo- Camera not capturing in "Multi" mode

Description-

In the QML Video example, the camera is expected to start capturing and display the feed in multi-mode along with two other selected videos. However, the camera does not start capturing, although the other two videos are played as expected.

Steps to Reproduce

1. Build and Run QML Video Example.
2. Select two files (videos to be played).
3. Click "Multi" button.
4. Click on center square to start the camera.

Expected Result

The camera should start capturing video, and the live feed should be displayed in the center square.

Actual Result

The camera does not start capturing, and no live feed is displayed. The two selected videos are played correctly in their respective squares.