AI Text to Voice & Talking Video
Re-dub any video with perfectly synced new speech
Convert text to voice and create AI talking videos with perfect lip sync. Enter text or upload audio — the AI voiceover generator handles speech synthesis and lip movement matching. The best AI text-to-voice tool for dubbing and content creation.
Creating professional voiceovers and dubbed videos traditionally requires expensive recording equipment, voice talent, and editing software. AI voice text to speech technology changes that by generating natural-sounding speech from written text and synchronizing it with video footage. The result is a re-dubbed video with realistic lip movements that match the new audio perfectly.
ModelPix's talking video tool doubles as a powerful voiceover generator and AI narrator. Type your script and the text to voice engine produces speech in your chosen voice style, then the lip-sync AI adjusts the speaker's mouth movements to match. You can also upload your own audio for complete control over tone and delivery.
This workflow is invaluable for content creators who need to update dialogue, localize videos, or produce voiceover content at scale. Instead of re-shooting footage, simply provide new text and the AI handles everything from speech synthesis to facial animation. The entire process takes seconds, not hours, making rapid iteration practical.
Talking video generation costs seven credits per second on ModelPix. The pay-per-use credit system means you are never locked into a recurring payment for a tool you might use sporadically. Free credits are provided at signup, so you can produce your first AI narrator video immediately and evaluate the quality before buying additional credits.
Key use cases for a text to voice and lip sync tool include localizing marketing videos, updating training materials without reshooting, creating voiceover content for social media, and producing AI narrator clips for storytelling channels. The voiceover generator aspect alone replaces expensive studio sessions for anyone who needs spoken audio from written scripts.
Compared to hiring voice actors and lip-sync editors separately, the talking video tool combines both processes into a single automated step. Competing services often split speech synthesis and lip-sync into separate paid products. ModelPix integrates the full pipeline at seven credits per second, keeping the workflow simple and the cost predictable.
From a technical standpoint, the text to voice engine converts your script into mel-spectrograms that drive a neural vocoder for natural-sounding speech. The lip-sync module then uses audio-visual correspondence models to modify mouth movements frame by frame. This two-stage pipeline is why the output sounds and looks synchronized rather than artificially dubbed.
A practical workflow tip is to match replacement audio pacing closely to the original speaker's cadence. When using text input, add punctuation and line breaks to control pauses and emphasis. This ensures the generated voiceover fits naturally within the video timing and prevents the lip-sync AI from stretching or compressing mouth movements unnaturally.
Parameters
| Parameter | Description | Required |
|---|---|---|
| video | The source video to re-dub. Must contain a clearly visible face for lip-sync. | Yes |
| audio | Replacement audio file. Provide either audio or text, not both. | Yes |
| text | Replacement dialogue as text. The system auto-generates TTS audio from this. Provide either audio or text. | Yes |
| voice | Voice style for auto-generated TTS. Only used when providing text input. | Optional |
How to Use
Open the Talking Video tool
Navigate to AI Generation and select Talking Video from the tool list.
Upload your video
Select the video you want to re-dub. The video should have a clearly visible face for lip-sync to work.
Provide audio or text
Upload a replacement audio track, or type the new dialogue and the system will auto-generate TTS speech.
Choose a voice (optional)
When using text input, select a voice style for the generated speech. This is skipped when supplying your own audio.
Generate and review
Click Generate to process the video. Review the lip-sync accuracy and audio alignment before downloading.
Example Use Cases
Tips & Recommendations
Ensure the speaker's face is clearly visible throughout the video for consistent lip-sync.
Match the pacing and length of replacement audio closely to the original for the most natural result.
Use punctuation and line breaks in text input to control pacing of auto-generated speech.
Shorter clips (under 60 seconds) process faster and maintain higher quality lip-sync.
For best results, use videos where the speaker faces the camera directly.