explained… LumaFusion’s workspace and basic tools
1 Sources icon
Tap here to access stills and clips in your Photos app or to import footage from other apps, such as GoPro.
2 Preview window
This panel enables you to preview clips selected to the left in the Source panel. It also displays the timeline’s contents.
3 Jog wheel
Drag your finger back and forth along the jog wheel to scrub through a video frame by frame.
4 Send to Timeline
Tap here to send a source clip (or the trimmed sections of one) to the timeline that runs across the screen.