Fine-tune frames in Advanced Editor
Build a non-destructive animation sequence from source frames, adjust playback, save the recipe, and export a revision you have checked.
On this page
Open the current editor
From a ready generated or imported video in Quick Mode, choose Fine-tune animation. The editor is designed for desktop widths of at least 1024 px; on smaller screens, use Quick Mode or a wider window. Some editor labels remain in English.
Your source video remains unchanged. The saved composition is an editing recipe that references source frames, not a newly generated video. Reopening a source can reuse its existing default composition; check the current sequence before replacing it.
Understand the five panels
| Panel | Purpose |
|---|---|
| Source Monitor | Inspect the original video at its own playhead |
| Animation Preview | Play the output sequence, canvas, and timing |
| Source Frames | Choose frames from the decoded source |
| Animation Sequence | Arrange the frames that will be exported |
| Canvas Inspector | Set global canvas, placement, and pivot |
The source and sequence playheads are independent. Selecting a frame is not always the same as moving a playhead. Watch the relevant preview when checking an edit.
Build a sequence
- Click a source thumbnail; Shift-click extends a range and Ctrl/⌘-click toggles individual selections.
- Use Insert at the sequence playhead, Append at the end, or drag source frames into the sequence.
- Select output frames to move, duplicate, or remove them. Group selections preserve their order when moved.
- Duplicate repeats each selected item beside itself; it can make a pose hold longer.
- Reverse reverses the entire sequence, not only the current selection.
- Use the Undo/Redo buttons to correct recent edits in this editing session.
The current limit is 240 expanded output frames, including repetitions. The UI does not expose a separate per-frame duration editor. Duplicate frames to make holds, and inspect the resulting sequence length.
Control timing and check a concrete example
Output FPS is adjustable from 1 to 60. At a fixed FPS, duration is expanded frame count divided by FPS. For example, 24 output frames at 12 FPS play for two seconds. Duplicating three of those frames yields 27 frames and 2.25 seconds; changing to 24 FPS then yields 1.125 seconds.
Changing FPS does not synthesize intermediate motion. Loop playback repeats the sequence but does not repair the last-to-first seam. Check feet, silhouette, and apparent speed at that boundary.
Source-frame timing comes from the video's decoded presentation timestamps. Do not interpret a source-frame number as an output-frame number after rearranging or repeating frames.
Save before leaving or exporting
Changes are automatically saved after a short idle period. Check the status: Unsaved → Saving… → Saved. Save failed is not a successful save. Keep the page open and preserve a record of important edits while resolving the error.
Use one editing tab per composition to avoid revision conflicts. The editor's Back and Export actions attempt to flush pending changes; abruptly closing a tab or losing connectivity is not a guaranteed save path. Undo history is local to the editing session, not permanent server version history.
Export uses a saved composition revision and a snapshot of its recipe. Review the displayed frame count, FPS, canvas, formats, and quote before confirming. Later changes do not rewrite an export already submitted.
Current boundaries
The current editor provides sequence editing and global canvas/character placement. It does not offer per-frame transform keyframes, automatic pose alignment, AI frame repair, multi-track compositing, or audio editing. Public API/MCP generation tools do not accept an Advanced Editor recipe.
Continue with canvas and pivot, output formats, and export troubleshooting.
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