---
title: How long does it take to process a video? (dubbing and lip-sync)
description: How long Rask AI takes to dub a video and to generate lip-sync, with typical processing times by video length, resolution and number of speakers.
---

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October 23, 2026

# How long does it take to process a video? (dubbing and lip-sync)

### **Dubbing**

The time it takes to dub a video depends on its length, weight, the output language, and other factors.  
Please check the [upload requirements](https://help.rask.ai/hc/upload-requirements-formats-file-size-and-maximum-video-length?hsLang=en) 

Generally, for a 20-minute video, you can expect to spend anywhere around 10 minutes for the whole process of transcripting & dubbing.

### **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

Check more info in the [Lip-sync article](https://help.rask.ai/hc/the-lip-sync-feature-rask-help-center?hsLang=en)

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