AI-Flow
Generate realistic lipsync animations from audio
Generate realistic lip‑sync animations from any audio track. PixVerse Lipsync aligns mouth movements to the speech with natural timing and expressions.
Inputs
Output
About This Template
Create studio‑quality lip‑sync videos in minutes. This template uses the PixVerse Lipsync model (via Replicate) to synchronize a speaker’s mouth movements in your source video to a new audio track. Simply upload your original video and a clean audio file (voiceover, podcast clip, dubbing, etc.). The model outputs a new video where facial movements match the timing, phonemes, and pacing of the speech. What it’s for - Dubbing and localization without re‑shoots - Replacing original dialogue for promos, explainers, and social shorts - Voiceover alignment for educational, corporate, or UGC content - Rapid iteration on scripts while keeping the same visuals How it works 1) Provide a face‑forward video with a visible speaker (stable framing, good lighting). 2) Upload your replacement audio (clear speech, minimal noise, consistent volume). 3) The model analyzes phonemes and timing, then renders a new video with synced lips and mouth shapes. Best results tips - Use a single, clearly visible face speaking toward the camera. - Keep video and audio lengths close; large mismatches may require trimming. - Prefer clean voice tracks (reduce background music/noise and reverb). - Aim for 720p–1080p inputs with steady framing and minimal motion blur. Output - A new video URL with the original visuals and lips synchronized to your audio. Note on cost and speed - Processing time and cost scale with video duration. An estimated rate is shown in the template. Actual usage may vary based on queue and settings. Use responsibly: ensure you own the rights to the video/audio and have consent from featured individuals, especially for likeness or voice replacement.
How to Use This Template
Step 1: Upload your file
In the 'Original Video' node, upload the file you want to process.
Step 2: Upload your file
In the 'New Audio' node, upload the file you want to process.
Step 3: Run the Flow
Click the 'Run' button to execute the flow and get the final output.
Who is this for?
Perfect for professionals and creators looking to streamline their workflow
Video editors and content creators
Quickly replace dialogue or add voiceovers to existing footage without reshoots, ideal for YouTube, TikTok, Reels, and shorts.
Marketers and social teams
Localize campaigns, test messaging, and adapt assets for multiple markets or platforms while keeping visuals consistent.
Educators and corporate trainers
Update lesson narration or training voiceovers and keep on‑camera material current without filming again.
Localization and dubbing teams
Produce multi‑language versions of talking‑head content with convincing mouth movements aligned to translated scripts.
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Frequently Asked Questions
What files do I need to start?
Upload one talking‑head video (e.g., MP4) and one audio file (e.g., MP3, WAV, M4A). Clear, noise‑reduced voice recordings work best.
Does this change the voice or just the lip movements?
It synchronizes the speaker’s mouth movements to your provided audio. The voice comes from your audio file; the model aligns facial motion to match it.
Will it work with any face or multiple people?
Results are most reliable with a single, prominent, front‑facing person. Multiple faces, extreme angles, heavy occlusions, or fast motion can reduce quality.
How long can the video or audio be?
Longer inputs increase processing time and cost. Keep video and audio durations similar for best alignment. If they differ significantly, consider trimming beforehand.
How can I improve lip‑sync accuracy?
Use high‑quality audio (clean speech, minimal music/noise), steady and well‑lit video, and ensure the speaker’s mouth is clearly visible. Avoid heavy compression and motion blur.
Does it support multiple languages?
Yes. The model follows your audio’s phonemes and timing, so it can sync to most languages as long as the speech is clear.
What happens if the audio has background music?
Light background music may work, but strong music or noise can reduce accuracy. For best results, use a voice‑only track or separate stems.
Will the output keep the original audio or the new one?
The output video reflects the new audio you provide. If you need the original audio, export it separately or mix tracks in post‑production.
How much does it cost and how fast is it?
Cost and speed scale with video duration. The template displays an estimated rate per second of generated video. Processing time varies with length and system load.
Are there any ethical or legal considerations?
Yes. Use lip‑sync responsibly—obtain consent, respect likeness rights, and comply with platform policies and local laws. Avoid deceptive or non‑consensual content.
What if lips look out of sync?
Check that video and audio durations are aligned, use cleaner audio, and ensure the subject’s face is clearly visible. Minor timing issues can often be corrected by trimming silence at the start of the audio.
What is AI-FLOW and how can it help me?
AI-FLOW is an all-in-one AI platform that allows you to build, integrate, and automate AI-powered workflows using an intuitive drag-and-drop interface. Whether you're a beginner or an expert, you can leverage multiple AI models to create innovative solutions without any coding required.
Is there a free trial available?
Yes, AI-FLOW offers a free trial to get you started. After that, you can purchase credits as needed—no subscription or long-term commitment required.
Can I integrate my API keys from providers like OpenAI and Replicate with AI-FLOW Cloud Version ?
Yes, you can easily integrate your existing API keys with AI-FLOW. If specified, nodes related to the API Key provided will use your API key, significantly reducing your platform credit usage.