Letterbox DCTL v1.2.2

An easy way for creating letterboxing aka "black bars" on your video.

This tool allows to select from a list of presets, or use a custom aspect ratio. You can change the color and opacity of the bars and even animate them!

Read more about this and other DCTLs from the Manuals

Note, that DCTLs are only supported in DaVinci Resolve Studio