As you create sequences and steps, turn on the UI visibility to display the UI field in the scene. This can be toggled on and off at anytime.
The UI preview icon can be found in the toolbar.
Options for aspect ratio:
- 16:9 Classic aspect ratio for 1080p - full HD screens (eg. 1920 x 1080 px)
- 16:10 Common aspect ratio (eg. 1920 x 1200 px)
- 4:3 Aspect ratio for common tablets
- 19.5:9 Aspect ratio for modern smartphones
It's also possible to modify the size of the preview (default 100% fit screen).