Select your character mesh and open the tab (green triangle icon).
For the Auto Lip Sync add-on to work effectively, your character model must be properly prepared.
Click the Install... button at the top right of the window.
First, you must download the correct .zip file—not the extracted folder. Then, navigate to Edit > Preferences > Add-ons > Install . Point Blender to the zip, and enable the checkbox. Crucially, the add-on relies on external Python dependencies (like pydub ). If you skip this, the lip-sync button will remain stubbornly grey. The solution is often manual: locate Blender’s bundled Python executable and run pip install pydub via your system terminal—a step that can frustrate beginners. auto lip sync blender install
The add‑on is one of the most polished tools available directly from Blender’s official extension repository. It uses an offline speech recognition engine (Vosk) combined with eSpeak NG and Phonemizer to support over 25 languages, including English, French, Spanish, Russian, Mandarin, and many more.
For this guide, we will focus on (via the popular Blender integration add-on), as it is the industry standard for automated, bone- or shape-key-based lip-syncing inside Blender. Step 1: Download the Necessary Files
Open the sidebar in your 3D Viewport by pressing the ; your premium tool will appear as its own tab (e.g., "Faceit"). 4. Setting Up Your Character for Automatic Lip Syncing Select your character mesh and open the tab
Master Guide: How to Install and Use Auto Lip Sync Add-ons in Blender
Open mouth with the tongue pressed against the upper teeth palette. Bone Driver Method (Alternative)
After enabling:
While these tools are designed to be robust, you might occasionally run into a snag. Here’s how to handle the most common issues.
Lip sync—synchronizing a character's mouth movements with spoken dialogue—is essential for natural, engaging animation. Without it, characters appear stiff, robotic, or disconnected from their audio tracks. Auto lip-sync tools analyze audio files, detect phonemes (distinct units of sound), and automatically generate keyframes or drive shape keys that match the mouth movements to the dialogue. This saves animators from manually creating keyframes for every syllable, allowing them to focus on performance, expression, and storytelling instead.
Click the button located at the top right of the window. Use the file browser to locate your downloaded .zip file. Select the file and click Install Add-on . Step 3: Enable the Add-on button at the top right of the window
