Hi DCP-o-matic team,

Thank you for your continued work on this incredible tool!
I’d like to suggest a feature that would make DCP-o-matic even more powerful for users who prepare non-standard or varied content: timeline-based editing with keyframes and per-segment transforms.

-Ability to cut/split a video into multiple segments directly on the timeline
-Set individual scaling, cropping, and positioning for each segment
-Optionally, use keyframes to animate those transforms over time within a segment (similar to Adobe Premiere Pro)

This would be beneficial for the videos in which multiple aspect ratios are used (Scope and IMAX for example), because now there is no way to do it easily.
Hopefully this isn't too hard to make, and thank you so much for your work.