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Timeline: zoom to the selected clips #5581
Description
The timeline already has a Fit zoom mode (packages/studio/src/components/TimelineToolbar.tsx). There is no way to zoom so the selected clips fill the visible width, which is what you want when tightening a cut in a long composition.
Done when
- A toolbar action and shortcut zoom and scroll so the selected clips span the visible width, with a small margin.
- With nothing selected the action is disabled, with a tooltip saying why.
- The zoom math lives in one function with a unit test (single clip, several clips, clips at the very start and end).
Desktop candidate: this component is also used by the HyperFrames Desktop app, so the change reaches it with the next version bump.
Reviewer: @miguel-heygen. New to the repo? Start with CONTRIBUTING.md; run bun install, then the package's tests, before opening a PR.
Activity
DanielMcSheehy commentedon Oct 18, 2026
I'll take this.
The zoom math will live in one function: the union of the selected clips, fitted to the visible track with the timeline's 24px range margin, and clamped so a selection at the start or the end cannot scroll past the timeline. The toolbar action stays disabled, with a tooltip, when nothing is selected. Z is the shortcut. Unit tests cover one clip, several clips, and clips at the start and the end.
Please assign this to me.