--- title: The Lip-sync feature description: "How Rask AI lip-sync works: video requirements, step-by-step setup, processing time and how many minutes lip-sync uses for your video." --- [Skip to content](https://help.rask.ai/hc/the-lip-sync-feature-rask-help-center#main-content) English Show submenu for translations [Customer portal](https://member.rask.ai/tickets?hsLang=en) ![White\_favicon.png\]](https://help.rask.ai/hs-fs/hubfs/White_favicon.png?height=40&name=White_favicon.png) Open main navigation Close main navigation - English Show submenu for translations - [Customer portal](https://member.rask.ai/tickets) - [Go to RASK AI](https://www.rask.ai/) [Go to RASK AI](https://www.rask.ai/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Rask AI Help Center](https://help.rask.ai/hc?hsLang=en) 2. [Features](https://help.rask.ai/hc/features?hsLang=en) October 23, 2026 # The Lip-sync feature Achieving high-quality dubbing results requires the synchronization of mouth movements with translated audio ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio84918981288c43fd8391df45fdd109c04introducing_the_lip-sync_beta_feature.png) ### **What is Lip-sync?** Lip-sync, short for lip synchronization, refers to the synchronization of audio and the lip movements with spoken words or sounds. You can use the Lip-sync feature if you notice any issues with the synchronization in your translated video. You can apply it after you have created a voiceover for your video. ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio9673626545a001429c58c065b2ecc0e52Divider.png) ### **Before applying the Lip-sync, make sure your video meets these criteria:** ❌ We suggest avoiding videos with a strong half-profile where the eyes are not fully visible, like this: ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio967415032f9ea2d3de172649236a2f1e41.png) ✅ The face needs to be clearly visible. Feel free to use videos with a subtle half-side angle, like this: ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio967415244810cd983cda33bf5a39574232.png) ✅ The lighting needs to be good, without shadows or overexposure. ❌ Nothing should cover the eyes, nose, mouth, and eyebrows. Make sure the lips aren’t blocked by mic, hands, logo or captions. ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio943570269d606702d70a36a1c72a5e1dephoto1706185301.jpeg) ### Please keep this in mind: - Bright lip makeup may appear as nude lips when using the Lip-sync feature. - Facial hair can cause artifacts in the video. ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio967364948e2e5216c481efc2e94cc8b45Divider.png) ### **Here’s how it works** 1. Upload your video via the link from YouTube, Google Drive, or directly upload the file from your device. Choose the target language and click on the translate button. 2. Add a voiceover to your video in Rask AI via “Dub video” button. 3. To check if your video is compatible with Lip-sync, click the "Lip-sync check" button. 4. If it's compatible, proceed by tapping the Lip-sync button. ![Screenshot 2026-10-05 at 15.25.20](https://help.rask.ai/hs-fs/hubfs/Screenshot%202026-10-05%20at%2015.25.20.png?width=372&height=400&name=Screenshot%202026-10-05%20at%2015.25.20.png) 5. Next, select the number of faces you want in your video — either "1" or "2+", then tap "Start Lip-sync". Just a heads up, this is about the number of faces, not speakers. ![Screenshot 2026-10-05 at 15.25.44](https://help.rask.ai/hs-fs/hubfs/Screenshot%202026-10-05%20at%2015.25.44.png?width=329&height=400&name=Screenshot%202026-10-05%20at%2015.25.44.png) 6. You might need to wait in a queue until the Lip-sync is applied to your video. By hovering over the lip-sync button, you can check if your video is in the queue, if it's processing, and the percentage of its readiness. 7. To view your newly processed video, navigate to the Lip-synced tab. ![Screenshot 2026-10-05 at 15.27.31](https://help.rask.ai/hs-fs/hubfs/Screenshot%202026-10-05%20at%2015.27.31.png?width=382&height=400&name=Screenshot%202026-10-05%20at%2015.27.31.png) ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio967365209eb2276b2d2e7dc86a48033f1Divider.png) ### **How long does it take to generate lip-sync?** The speed of lip-sync generation depends on the number of speakers in the video, duration, quality and size of the video. For example, here are approximate rate of lip-sync generation for different videos: Videos with one speaker - 4 minute video 1080p ≈ 58 minutes - 10 minute 1080p **≈** 4 hours - 10 minute 4K video **≈** 16 hours Videos with 3 speakers: - 10 minute 1080p **≈** 10 hours 20 minutes ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio967365209eb2276b2d2e7dc86a48033f1Divider-1.png) ### **How much does it cost to generate lip-sync for a video?** Lip-sync is available on **Creator Pro**, **Business** and **Enterprise** plans. It isn't available on the free trial or the Creator plan. **1 minute of lip-synced video = 3 minutes** from your balance. Lip-sync is charged on top of dubbing: to dub and lip-sync a 1-minute video into one language, you need 4 minutes (1 for dubbing and 3 for lip-sync). See how minutes work on each plan in [Plans and minutes explained](https://help.rask.ai/hc/explaining-free-trial-subscription-plans-and-minutes-rask-help-center?hsLang=en). ![](https://help.rask.ai/hubfs/Knowledge%20Base%20Import/downloads.intercomcdn.comio967365209eb2276b2d2e7dc86a48033f1Divider-2.png) ### **Friendly reminder:** - If you change the transcription and dub the video, make sure to Lip-sync the video again to apply the changes. - Lip-sync minutes are deducted each time you generate a lip-sync. - If you have already generated a lip-sync but subsequently edit your video and re-dub it, you will need to generate the lip-sync again, and the minutes for it will be deducted once more. - Lip-sync generation cannot be stopped once it has started. - Lip-sync is generated for the entire video; it is not possible to select specific parts of the video for lip-syncing. - If you have a video with Lip-sync and captions, you will need to generate it again after making changes to the transcription. Processing times for different videos are listed in [How long does it take to process a video](https://help.rask.ai/hc/how-long-does-it-take-to-dub-a-video-rask-help-center?hsLang=en). To download the lip-synced version, see [Download options](https://help.rask.ai/hc/download-options-in-rask-ai-1?hsLang=en). If you have any questions regarding Lip-Sync, please contact us via the support chat or [support@rask.ai](mailto:support@rask.ai). - [FAQs](https://help.rask.ai/hc/faqs?hsLang=en) - [Features](https://help.rask.ai/hc/features?hsLang=en) - [Editing projects](https://help.rask.ai/hc/editing-projects?hsLang=en) - [Pricing plans & billing information](https://help.rask.ai/hc/pricing-plans-billing-information?hsLang=en) - [Fix a problem](https://help.rask.ai/hc/fix-a-problem?hsLang=en) - [Enterprise](https://help.rask.ai/hc/enterprise?hsLang=en) - [Account questions](https://help.rask.ai/hc/account-questions?hsLang=en) - [Changelog](https://help.rask.ai/hc/changelog?hsLang=en) [![Rask logo](https://help.rask.ai/hubfs/642973bc6c28f475e0f8c538_rask-logo-black%20(1).svg "Rask logo")](http://brask.ai) RASK AI Help Center Copyright © 2026, Brask AI