Custom Voiceover
Skip AI text-to-speech entirely. Upload your own narration (your voice, a professional voice actor, or any pre-recorded audio), and VidRush builds the video around it.
When you upload a custom voiceover, VidRush analyzes your audio to generate accurate subtitles, match visual pacing to your narration, and select B-roll that fits what you’re saying.
How to upload
- Open the prompt window and click the + button in the bottom left.
- Select Upload Voice Over.
- Upload your audio file.
That’s it. VidRush handles subtitles, visuals, and pacing from there.
File requirements
| Requirement | Details |
|---|---|
| Formats | MP3, WAV |
| Max file size | 150 MB |
| Min duration | 6 minutes |
| Max duration | 40 minutes |
VidRush will flag your file if it detects low audio quality or excessive filler words. Both affect subtitle accuracy and the quality of your final video.
Tips for best results
Your voiceover directly drives how VidRush selects footage and generates subtitles, so audio quality matters more than you might expect.
- Avoid long silences. VidRush uses your narration to pace the visuals. Dead air creates awkward gaps in the final video.
- Keep a consistent pace. Sudden speed changes can throw off subtitle timing and visual flow.
- Record clean audio. Background noise, echo, or muffled sound makes it harder for VidRush to generate accurate subtitles, which affects everything downstream.
- Cut filler words before uploading. “Um,” “uh,” and repeated false starts reduce subtitle quality. VidRush will warn you, but it’s better to clean these up beforehand.
Good to know
- There’s no in-app trimming or preview. Make sure your audio is ready to go before uploading.
VidRush does not clone your voice from this file. Custom voiceover uses a finished audio track for one specific video. For AI voice cloning, train your voice through ElevenLabs first, then select it in VidRush’s voice library.