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The editor renders the complete draft as an H.264 MP4. The top-bar action is disabled while the timeline is empty or another editor render is active.

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Preflight checklist

  • Confirm composition width, height, frame rate, and derived duration.
  • Inspect the first and last visible frames.
  • Play across every cut, title, caption change, and fade.
  • Restore intended hide and mute states after isolation work.
  • Verify remote media loads without expired or temporary-only references.
  • Inspect keyframe lanes for points outside newly trimmed ranges.
  • Review caption text, timing, maximum lines, and contrast.
  • Listen for clicks, clipping, missing audio, and overly long fades.
  • Deselect review-only alternatives or remove them if they should not render.

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Start the render

1

Finish the final edit gesture

Let autosave synchronize and stop playback.
2

Choose Render video

The job is added to the local render queue and enters a starting state.
3

Keep the session open

The browser invokes the render service and polls progress. Avoid refreshing while the in-memory job is active.
4

Review the completed MP4

When the render finishes, the browser automatically downloads the H.264 MP4. Open that file and watch it end to end in a video player—not only in the editor preview.
Editor with Render video entering the Starting state

Starting an H.264 render

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Duration source

Render duration is derived from the composition’s layer state. A forgotten layer extending far beyond the intended ending makes the output longer even if it is off-canvas or visually empty.
Queue state is held in browser memory. Refreshing or closing the tab can remove local progress tracking and completion handling for that job.
Continue to H.264 details, progress and queue, or render troubleshooting.