How to edit a clip in the timeline

The left panel shows every clip Sliver generated — shorts on top, chapters below. Tap a clip to load it into the editor. On mobile, the clip list is a slide-in drawer; open it via the hamburger icon at the top-left of the editor.

Screenshot pendingClip list with shorts and chapters

Drag the left handle on a clip block to move the start; drag the right handle to move the end; drag the body to slide the whole clip. Every drag releases a 600 ms-debounced re-render so the preview updates in seconds, not minutes.

Screenshot pendingTimeline with a clip selected and trim handles visible

On vertical (9:16) shorts, the Framing picker offers Center, Speaker, Manual, and Webcam. Speaker (default) is the speaker-tracking model that follows whoever is talking — best for podcast and multi-person frames. Center is the classic static crop. Manual lets you drag a custom crop on the source preview. Webcam stacks a streamer-cam strip above the game frame.

Word-by-word AI captions are on by default. Off removes them. Custom lets you point at an .ass subtitle file. Captions burn into the rendered output — they’re part of the pixels, not a sidecar track that can be turned off in TikTok.

Every change auto-saves to the project — there’s no explicit Save button. The “Unsaved changes” pill in the top-right turns to “All saved” a second after each edit lands.