Lip Sync AI Video Generator
Create a lip-synced video with our AI engine for a natural and authentic experience. Match the speaker's mouth to the audio in 135+ languages.
Free 7-day trial. No credit card required.
135+ languages
G2 4.7 / 5
SOC 2 Type II
How it works
How to Create a Lip Sync AI Video
The whole workflow runs in your browser as an audio and video translator online, with editable transcripts before export and nothing to install or configure. Upload, translate, edit if needed, download the translated transcript as SRT or TXT, and export with this audio translation tool.
step 1
Upload your video
Drop your video file or paste a YouTube or Google Drive link with a video you want to translate and lip-sync.
step 2
Review, then click lip-sync
Rask transcribes and translates the whole video first. Open the result and adjust it: rewrite a line, correct a product name, move a segment on the timeline, tighten a pause. Once the translation reads the way you want it, choose Standard or Enhanced lip-sync mode and Rask will apply it across the video.
step 3
Preview and export
Watch the result before it leaves Rask, then download the finished file after export. Regenerate a single segment when one line lands off, then export MP4 with captions burned in, with the final output ready after a simple download click.
Why Rask
Why teams choose Rask for Lip-Sync AI
Lip-sync is a quality decision inside a workflow you control, from the approved translation to the finished file.
01
Lip-sync runs on a translation you already approved
You read the script, fix the terms, adjust the timeline, and only then spend minutes on lip-sync. Every generated frame is built on a version you have already signed off.
02
Several people in one frame
Rask separates the speakers in your recording, assigns each a voice, and matches every face in shot to its own translated audio. Panels, interviews, and two-host recordings stay usable as one file. See how multi-speaker translation handles a room full of voices.
03
Two quality levels, so the minutes follow the stakes
An internal timing check and a flagship course page hold to different standards. Choose Standard or Enhanced per project and spend accordingly.
04
One face, one voice, one person
Lip-sync settles what the audience sees. Voice cloning settles what they hear - the same instructor, recognisable in 32 languages, with separate controls for identity and emotion. Together they keep the speaker intact.
05
Fix one line, keep the approved version
When a single segment lands wrong, change that segment and regenerate it with no additional costs. Everything already approved stays exactly as it was.
06
Built for the library you already filmed
Recorded lectures, past webinars, sessions from three years ago. Lip-sync gives long-form footage a second life in new markets, and the archive becomes an asset.
07
Compliance your security team can sign off
SOC 2 Type II and GDPR, with documented handling of video and audio data. The rollout moves at the pace of the content calendar.
Watch it done end to end
Real production
How Rask’s Lip-Sync handles real production footage
Real source material is messy: beards, glasses, profiles, handheld cameras, three people talking over each other, a room lit for the room. Rask holds up on the footage teams actually have.
Several faces in shot. Each speaker matched to their own translated audio, in the same frame.
Faces turned away from the camera. Profile and three-quarter angles, speakers looking at a screen or at each other.
Partly covered mouths. Beards, moustaches, glasses, a hand near the face, or a microphone in shot - even when the mouth is partly obscured, subtle facial expressions remain readable.
Cuts and camera movement. Handheld footage, pans, and edits that change angle mid-sentence.
Uneven light. A lecture hall, a sanctuary, an office at the end of the day.
Fast dialogue. Overlaps, interruptions, and the pace people talk at when they are off script.
Long recordings. Full sessions and course modules, start to finish.
Enhanced lip-sync is the level these hold at. Standard trades precision for minutes.
Use cases
Where lip-sync earns its place
Lip-sync matters most when the person on screen is part of the message. Here is where teams turn it on.
01 / 06 · Courses & lectures
Course and lecture libraries
An instructor recorded once, reaching students who do not share their language. Built for learning and development teams running a growing catalogue of educational videos for students in other languages.
02 / 06 · Customer education
Customer education and product onboarding
Help-centre videos, feature walkthroughs, explainer videos, and onboarding flows in every market you sell in, rebuilt only when the product changes. More on customer education.
03 / 06 · Internal training
Internal training and enablement
Compliance, safety, and HR onboarding where people need to absorb the content. Distributed teams get the session their colleagues at headquarters got.
04 / 06 · Marketing & brand
Marketing, advertising, and brand video
A campaign spot carries its weight through timing, delivery, and the face saying the line. Lip-sync with voice cloning keeps all three intact in the next market, so the ad lands the way the original did.
05 / 06 · Weekly broadcast
Weekly broadcast
Sermons, services, training videos, and teaching series, where the same trusted speaker publishes every week to a congregation that speaks multiple languages.
06 / 06 · Founder-led content
Founder- and expert-led content
Product demos, keynotes, and thought leadership, where credibility sits with the specific person talking. It also fits localized engaging social media content, and personalized video messages that need to feel native in different markets.
Where translated audio is enough
Screen recordings, voice-over documentation, and anything filmed without a person on camera reach the audience on translated audio and subtitles alone, at a lower cost per minute. Lip-sync is a quality decision for on-camera content, applied where it changes how the video lands.
Lip-sync modes
Standard and Enhanced Lip-Sync AI modes
Rask has two lip-sync levels: Standard & Enhanced. The breakdown below shows which one fits the project in front of you.
Standard lip-sync
Enhanced lip-sync
Best for
Best for
Draft passes, timing checks, low-stakes internal video
Anything published publicly: Courses, customer-facing content, marketing
Visual quality
Visual quality
Medium. Mouth movement can read as mechanical, and artifacts appear on some faces
High. Lifelike mouth movement that holds up on close inspection
Teeth, beards, and glasses
Teeth, beards, and glasses
Least reliable: the mouth can move unnaturally
Handles them
Head angles and profile shots
Head angles and profile shots
Most accurate on speakers facing the camera
Holds on three-quarter and profile angles
Minutes used per minute of video
Minutes used per minute of video
1 minute
3 minutes
Cost per minute of video
Cost per minute of video
From $1.00
From $3.00
Enterprise ready
Built for teams publishing video at scale
Everything your security, legal, and ops teams need before a video library starts moving through localization.
Security and compliance
SOC 2 Type II and GDPR, with documented data handling, so a security review of how video and audio are processed moves on schedule.
API and integrations
For recurring volume, the Rask API removes uploading files one at a time and the handoffs around it, lip-sync included.
Reviewer roles
Someone who speaks the target language approves the output before it publishes. Team seats and reviewer roles keep that off one person's desk.
Custom development
Dedicated engineering support for teams connecting localization to an existing content operation, with a Customer Success Manager and regular health checks.
Human in the loop
Our team can prepare footage, configure the workflow, and check output before delivery — a mispronunciation, a pacing issue, a voice that has drifted from the speaker.
Workflow design
For teams with recurring volume, we map the current process, define review stages and roles, and set the quality standard once, so it holds across projects.
Compliance ready
Consent and compliance, settled before the rollout
Lip-sync changes how a person looks on camera, which makes it a legal question as much as a creative one.
Certified. SOC 2 Type II and GDPR compliant. Video and audio stay encrypted in transit and at rest.
Your footage stays yours. Your content is not used to train models.
Consent comes first. In many jurisdictions a voice and a face carry protections comparable to a signature. Rask works from footage you own and voices you have permission to use.
A neutral option exists. Where consent for a specific voice is unavailable, a synthetic voice with usage rights covers the same content.
What people say
4.7 / 5 on
More reviews on G2
“Localize content at scale with Rask API”
Need to translate hours of audio and video daily? The robust API automates the process, making it time- and cost-efficient.
Education
“Adding voices to videos has never been easier”
The platform is very user-friendly. It makes my work much easier and saves me a lot of time.
Marketing
“A great way to reach new audiences in other countries”
What I like best is the intuitive interface - incredibly user-friendly. The data processing speed is phenomenal, and the support team is responsive and very helpful.
Entertainment
“Probably the best AI voice cloning and dubbing tool on the market”
Very easy to upload voice or video files, with an interface where both the original and the translation can be edited. The clone voices are quite good - in totality, a top tool right now.
Content Creators
Rask features
More from Rask
Lip-sync is one decision inside a faster, lower-cost localization workflow.
What is AI lip-sync?
How do I lip-sync a video?
How do I create a lip-sync AI video?
What is the best AI tool for lip-sync?
How much does AI lip-sync cost?
What video formats, resolutions, and lengths are supported?
How accurate is the AI lip-sync?
Can I clone a pre-recorded voice?
Can I lip-sync a video with several speakers in frame?
Is AI lip-sync legal? Do I need consent?
Is lip-sync the same as AI dubbing? Do I need voice cloning too?
Start your journey with AI Lip-Sync technology
Start with one video and see how it holds up: a game changer for teams reusing a video library across languages. Or book a demo and we will walk through your library, your review process, and where lip-sync is worth the minutes.