keyframe-data-model

You manage frame-based keyframes by defining a frame-keyframe structure containing frame, origin, and data, which tracks precise edits and origins to support persistence and cleanup for crop and highlight animations.

The best way to track keyframe origins is using explicit origin tracking categories like permanent, user, and trim, which ensures origin-correct edits and supports deterministic interpolation across keyframes.

Deterministic interpolation is ensured by applying validation invariants and helper rules across your keyframes, maintaining consistent state machine transitions during initialization, editing, and trimming.

Yes, you can use a lightweight state machine to enforce keyframe invariants during video editing, managing the lifecycle states of initialization, editing, and trimming to maintain deterministic interpolation.

You convert between frames and times using helper rules that translate frame-based keyframe data into time equivalents, ensuring frame-level edits align correctly with your video timeline.

You need a frame-based keyframe model when driving overlay or framing workflows that require explicit frame numbers for crop regions and highlight effects rather than continuous time-based values.