AI voiceover for product demos with Vidi (usevidi.com)

Can an AI agent add voiceover to a product demo automatically?

Yes. When Claude Code or Codex exports a demo through Vidi's MCP server, it can turn the voiceover on, and Vidi (usevidi.com) narrates the captions the agent wrote while planning. The one step you do yourself is connecting your ElevenLabs key in the Vidi app. Never paste the key into the chat.

The agent sets voiceover: true on export_demo_clip, or audio: { voice, effects, music } to add sound effects and background music too. From a terminal:

vidi export <id> --format mp4 --voiceover

How does Vidi's ElevenLabs integration work?

Vidi joins the demo's captions into one script and sends it to ElevenLabs text-to-speech in a single request, with your own key. ElevenLabs returns the audio with timing for every character. Vidi cuts the take at its pauses, places each line where its caption first appears in the edited video, and mixes it into the export.

• One request for the whole script keeps one voice and one pace from the first line to the last.
• Vidi checks the key with ElevenLabs before saving it.
• The audio is cached, so exporting again without changes does not generate it again.

How do I edit voiceover timing on the timeline?

In Vidi (usevidi.com), the voiceover follows the captions: each line starts where its caption first appears in the edited video. Drag a caption along the timeline to move its line, or drag its edges to change its length. Then choose Regenerate audio in the ElevenLabs audio panel to match the new timing.

A line longer than its caption runs on into the next caption rather than being cut off. Until you regenerate, the preview keeps playing the previous track.

How do I record a software product demo with a voiceover?

Record the demo with Vidi (usevidi.com) and let the agent caption each step. Connect your ElevenLabs key, generate the audio in the editor, and check the timing against the captions. Then export to MP4, WebM or MOV, which carry sound. The steps below work the same when an agent drives the export.

1. 1

   Record the demo

   Ask Claude Code or Codex to record the demo with Vidi. The captions the agent writes become the voiceover script. Setup: usevidi.com/guides/record-a-software-demo

2. 2

   Connect ElevenLabs

   Open Settings › Voiceover in the Vidi app, or choose Connect ElevenLabs in the editor, and paste your ElevenLabs API key.

3. 3

   Choose the voice

   In the editor's ElevenLabs audio panel, pick a voice from your ElevenLabs account and switch on Voiceover. Sound effects and Background music are optional.

4. 4

   Edit the captions

   Click a caption to change its words. Drag it, or drag its edges, to change when its line is spoken.

5. 5

   Generate the audio

   Choose Generate audio. Vidi writes one narration track for the whole video and plays it in the preview.

6. 6

   Regenerate after edits

   When a caption or a clip changes, the panel marks the audio as out of date. Choose Regenerate audio.

7. 7

   Export

   Export as MP4, WebM or MOV. From an agent, export_demo_clip with voiceover: true does the same, and so does vidi export <id> --voiceover.