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2D Auto Lip Sync (For Cut-Out And Grease Pencil)

by Vrengkat·Motion Graphics

Illustrative cover generated by AnyPlugins — no product screenshot available.

Why we like it

2D Auto Lip Sync earns its place in the superhive library by pairing automated FFT-based viseme detection with a manual override grid and Rhubarb compatibility, giving 2D animators both hands-off matching and frame-level control in a single Blender addon.

What is 2D Auto Lip Sync (For Cut-Out And Grease Pencil)?

2D Auto Lip Sync is a Blender addon from Vrengkat that automates mouth-to-audio matching for 2D characters. It works with both Grease Pencil layers and image-based cut-out viseme collections, switching between the two so you can use whichever setup your character uses. Under the hood, it applies FFT frequency tracking to detect vowels and consonants from an audio track.

Beyond mouth shapes, the addon drives a jaw bone with customizable openness for every viseme. Built-in temporal hysteresis smooths the output to prevent flickering mouths and keeps animation stable at any frame rate. Audio sync runs through the Blender Video Sequencer: select your audio strip and click Detect Start Frame. A manual viseme grid lets you punch in specific mouth shapes alongside the automated generator, and the tool is compatible with the Rhubarb Lip Sync engine for phonetic accuracy.

The download includes the addon in Zip format, pre-configured jaw-drop presets for the 12 standard visemes, and step-by-step documentation. It is listed as compatible with Blender 3.0 through 5.1 under the GPL license.

Who is 2D Auto Lip Sync (For Cut-Out And Grease Pencil) best for?

2D Auto Lip Sync (For Cut-Out And Grease Pencil) is best for animating 2D character lip sync in Blender, using either Grease Pencil or image-based cut-out characters driven from an audio strip.

How much does 2D Auto Lip Sync (For Cut-Out And Grease Pencil) cost?

2D Auto Lip Sync (For Cut-Out And Grease Pencil) is completely free to download and use.

Key features

  • FFT frequency tracking to detect vowels and consonants from audio
  • Dynamic jaw animation that drives a jaw bone with customizable openness for every viseme
  • Manual viseme grid to punch in specific mouth shapes alongside the automated generator
  • Switches between Grease Pencil layers and image viseme collections
  • Temporal hysteresis smoothing that prevents flickering mouths at any frame rate
  • Audio sync through the Blender Video Sequencer with a Detect Start Frame control
  • Compatible with the Rhubarb Lip Sync engine

Tags

#lip sync#grease pencil#2d animation#cut-out#rhubarb#blender addon#viseme

Frequently asked questions

Does 2D Auto Lip Sync work with Blender 3.0 through 5.1?

2D Auto Lip Sync lists compatibility with Blender versions 3.0 through 5.1, covering a wide span of releases. The addon ships in Zip format for installation and works with both Grease Pencil layers and image-based cut-out viseme collections. If you are running a Blender build inside that range, check the developer's page and the included step-by-step documentation to confirm setup details for your specific version before starting a project.

Can 2D Auto Lip Sync animate both Grease Pencil and cut-out characters?

2D Auto Lip Sync is built for both workflows. It switches between Grease Pencil layers and image viseme collections, so you can animate drawn Grease Pencil mouths or 2D cut-out image characters with the same addon. Alongside the automated matching, it drives a jaw bone with customizable openness for every viseme and includes pre-configured jaw-drop presets for the 12 standard visemes. A manual viseme grid lets you punch in specific mouth shapes when you need to correct individual frames.

How does 2D Auto Lip Sync sync to your audio?

2D Auto Lip Sync integrates with the Blender Video Sequencer. You select your audio strip and click Detect Start Frame, and the addon applies FFT frequency tracking to detect vowels and consonants for mouth matching. Built-in temporal hysteresis smooths the result to prevent flickering mouths, keeping the animation stable at any frame rate. For users who want industry-standard phonetic accuracy, it is also compatible with the Rhubarb Lip Sync engine.

Is 2D Auto Lip Sync free?

2D Auto Lip Sync is listed as free in this catalog. Licensing terms can change over time, so for current pricing and license details it is best to check the developer's page directly. The addon is distributed under the GPL license, and the download includes the addon in Zip format, pre-configured jaw-drop presets for the 12 standard visemes, and step-by-step documentation to guide setup.

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