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Studio switches to caption editing when the open composition contains .caption-group elements and their caption source can be resolved.
HyperFrames Studio with one caption word selected, word blocks in the caption rail, and position and transform controls

A selected word connects the canvas, caption rail, and the controls that Studio currently saves.

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Adjust a word on the canvas

  1. Select a caption word. Hold Shift to select more than one.
  2. Drag the selection, resize it, or rotate it on the canvas.
  3. Use the arrow keys for a 1-pixel nudge, or Shift + arrow for 10 pixels.
  4. Reload the project once to confirm the override was saved.
Position, scale, rotation, color, opacity, font size, weight, and family overrides are written to caption-overrides.json after a short delay.

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Use the timeline to inspect the rhythm

The caption timeline shows one block per word. Select a block to find the same word on the canvas. You can drag an edge to audition different start or end timing, and double-click a word to preview a new group boundary.
Timing changes, group splits, and Animation-tab changes are live-preview tools in the current Studio. They do not survive a reload. Fix words, durable timing, group structure, and reusable caption behavior in the caption source or ask the agent to update it, then reopen the project.
This distinction matters: Studio can save word-level visual overrides, but it is not yet a complete caption-source editor. Browse caption components when the source needs a reusable visual treatment.

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Review the result

  • Watch with sound.
  • Watch once with sound muted.
  • Check names and important words against the audio.
  • Check captions against cuts, overlays, and changing backgrounds.
  • Confirm the final caption disappears cleanly.
If a preview-only edit fixed a real problem, move that change into the source before rendering.

Related topics

Add captions or repackage talking-head footageUse voice, music, sound, and captionsEditorial Emphasis