Claude Design animations are silent. To add background music or a spoken voiceover, render the animation to MP4 with claude2video, then pick a music track or generate an AI voiceover on the result screen. Both get baked into the same file, so there is no separate editing step and nothing to install.
Why Is My Claude Design Animation Silent?
Claude Design builds animations as React code that runs live in your browser, and that code draws pictures, not sound. There is no audio track in a Claude Design project, so every way of turning it into a video gives you a silent clip: a screen recording, the built-in export, and any frame-by-frame exporter all capture the picture only.
This trips people up right now because the AI video tools next door work the other way. Sora, Veo, and Kling generate footage with sound and even lip-sync built in, so "AI video" has come to imply "AI video with audio." Claude Design is a different kind of tool. It renders crisp, on-brand motion graphics, and sound is a step you add on top.
How Do I Add Music to a Claude Design Video?
Add music by rendering the animation on claude2video and choosing a track on the result screen. The music is mixed into the MP4 during export, so the file you download already has sound.
Here is the full path from a finished animation to a video with music:
- In Claude Design, click Share, switch to the Export tab, and download either Project archive (.zip) or Standalone HTML.
- Open claude2video.com and drop that file onto the page.
- Pick your resolution and frame rate (up to 4K and 60 fps), then export. Most short clips finish in well under a minute.
- On the result screen, open the audio panel and choose a track from the curated music set.
- Download the MP4. The music is already in it.
You never touch a timeline or a separate audio editor. If the track is longer than your animation, it is trimmed to fit; if it is shorter, it loops cleanly.
How Do I Add a Voiceover to a Claude Design Video?
Generate a voiceover by writing a short transcript and letting claude2video turn it into speech with an AI voice, then applying it to the render. No microphone, no recording booth, no re-takes.
The transcript is the only part that needs a human decision, and Claude can draft it for you. Once your animation is open in Claude Design, ask it to write the narration:
Now write a voiceover transcript for this video, plain text I can paste into a
text-to-speech model. Use the same language as the on-screen text. Try to keep it
in sync with what's happening in the video. Output just the transcript, nothing else.
Paste that transcript into the voiceover field on the result screen, pick a voice, and generate. The spoken track is added to the same MP4 you already rendered.
Can I Use Music and a Voiceover Together?
Yes. Add a music track and a voiceover on the same render, and the music volume automatically ducks under the voice so the narration stays clear. Both layers land in one MP4. This is the mix you want for a product demo or an explainer, where a voice carries the message and a bed of music keeps it from feeling flat.
Music vs. Voiceover: Which One Do You Want?
| Goal | Use | Why |
|---|---|---|
| Social clip, title card, background loop | Music only | Sets a mood in seconds, no words to write |
| Product demo, tutorial, explainer | Voiceover (plus quiet music) | A voice explains what the motion is showing |
| Pitch or launch video | Both | Music for energy, narration for the story |
| Silent-by-design UI showcase | Neither | Let the motion speak; add captions in your platform |
Doing It Yourself in an Editor
You can always export the silent MP4 and add audio in a video editor. Drop the file into CapCut, DaVinci Resolve, Premiere, or iMovie, drag in a music file and a recorded or synthesized voice track, balance the levels, and re-export. It works, and it gives you frame-level control over timing.
The trade-off is time and tooling. You are now managing two audio tracks, level automation, and a second export, for a result that a curated track plus a generated voiceover usually matches. Use the editor when you need precise sync or a specific licensed song. Use the built-in audio when you want a finished video in one pass.
Getting the Cleanest Possible Base Video First
Audio only sounds as good as the video it sits on looks. A screen recording of a Claude Design animation arrives with dropped frames, compressed color, and sometimes a stray cursor, and no amount of music fixes stutter. Rendering frame-by-frame gives you every frame at full quality, which is the picture worth scoring in the first place. That is the whole reason claude2video captures in a clean headless browser instead of recording your screen.
If your animation embeds its own video clips, note that their audio will not carry through. Every render comes out silent by design, then you add the music or voiceover on top. That is a feature here, since it means you control the final soundtrack instead of fighting with whatever was buried in the source.
Frequently Asked Questions
Do Claude Design animations have sound? No. Claude Design renders animations as browser-based React code that draws visuals only, with no audio track. Every export is silent: a screen recording, the built-in export, and a frame-by-frame render all capture the picture only. To get sound, you add background music or an AI voiceover after rendering. claude2video does both in the same step that produces your MP4.
How do I add background music to a Claude Design video? Render the animation on claude2video by dropping in your .zip or Standalone HTML export, then choose a track from the curated music set on the result screen. The music is mixed into the MP4 during export and trimmed or looped to match your animation's length. You download one file with the music already in it, no editor required.
Can I add an AI voiceover instead of recording my own? Yes. Write a short transcript, or ask Claude Design to draft one that matches the on-screen action, then paste it into the voiceover field on the result screen and pick a voice. claude2video synthesizes the narration and bakes it into the same MP4. You can record your own voice in an editor instead, but the generated voiceover skips the microphone and the re-takes.
Can I use music and a voiceover at the same time? Yes. Apply both on the same render and the music ducks under the voice automatically, so the narration stays clear over the backing track. Both layers are combined into a single MP4. This is the standard setup for demos and explainers, where the voice carries the message and light music keeps the video from feeling empty.
Is adding music and voiceover free? Yes. Renders on claude2video are free and unlimited, and the music and voiceover options are part of the result screen at no charge. A paid tier only removes the watermark for people who want a clean export. There is no separate fee for adding sound.
Will the music be copyright-safe for social media? The built-in tracks are a curated set meant to be dropped straight onto exports, which avoids the copyright strikes you risk by pulling a popular song off the internet. If you need one specific licensed song, export the silent MP4 and add that track in your own editor, where you control exactly which audio goes in.