Export a short video with captions
AhaDo

Task

Export a short video with captions

Make and save a captioned MP4 in an external editor. Check the words, timing and saved file as you go.

How-to guideWork · AI solutions for operations AI drafts captions; you review the result
  1. 1Understand the method
  2. 2Do it
  3. 3Check the result
1

How to do this task

Follow the method below, do the task, then check the result. Tool links show options, not extra steps you must complete.

Traditional approach
Write each caption and align it manually with the voice, then export and review the saved file.
Use AI

The tested wide.video route generated timed captions, allowed cue edits and downloaded an MP4 without account or payment. Use the verified Firefox desktop steps and review the result.

View wide.video instructions →
Prompt to use with your assistant

Keep the source script beside the editor. Correct caption text from that source, check timing against the voice, and review the saved file before use.
Step-by-step guide
Export a captioned MP4 with wide.video →
What can go wrong
  • Imported media has not yet been placed on the timeline
  • First-use caption model downloads are still running
  • Karaoke word dimming makes the sentence hard to read
  • The render finished but the file was not saved
  • Closing a temporary project loses editing work
2

Make the file in the external editor

Follow the import, caption, export and saved-file checks. Each step includes a recovery choice when the result differs.

Start the guided workflow →
3

Human check before use

  • The saved MP4 opens, plays and contains the intended voice.
  • The saved file is 20–30 seconds long and the final words are not cut off.
  • Every caption matches the source, appears with the voice, fits the frame and remains readable.
  • The message, names and numbers agree with the original material.
  • I own or have permission to use every included element.
Keep the final decision with a person

AI does not verify facts, arithmetic, identity or policy. Treat every generated line as a draft until you have checked it.

→

Continue with a concrete task

Choose the task that matches the material and decision you have now.

Where this comes from

One synthetic engineering replay on 7 September 2026: wide.video 1.7.10, Firefox 153 on macOS, timed captions and a downloaded 22-second H.264/AAC MP4. This is not a real-user success rate or transcription benchmark. Firefox temporary projects cannot be restored after closing; mobile editing, other browsers and Chinese recognition were not verified.

Open source

Source type
Tested once with synthetic media
Collected on
2026-09-06
Verification status
One completed test with synthetic media
Sample size
No user samples yet

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