u/coolt00nz

Using Face2FaceAI Expression Swapper you can copy any expression between photos, leaving identity intact. It lets you reinsert a face with a changed expression back into its original photo. You can also use it to fix asymmetrical faces in selfies. All AI processing happens on phone (no uploads), so your photos remain totally private. Extensive help glossary and instructional tooltips provided, including troubleshooting suggestions, plus 50 example expressions.

In exchange for participating in the 2 week Closed Trial you get free access to all App Premium Features and a chance to help out a solo developer. You'll need an Android phone, OS 8.0 or later, 600 MB free (it's a big app), and a Gmail address where I can send you a link to install the app on your phone. You can reach me over Reddit chat to give me your address, where I'll be happy to answer any questions. Feedback about anything broken or frustrating you encounter while using the app is welcome, but none is required. Thanks - looking forward to hearing from you.

I built a Colab notebook that does facial expression copying using [LivePortrait](https://github.com/KwaiVGI/LivePortrait). You load a source image (contains a single face with any expression) and a target image (contains a single face whose expression is to be changed), adjust blend sliders, and it transfers the expression while preserving identity.

The notebook replaces LivePortrait's use of InsightFace for face detection with MediaPipe, so the entire pipeline is commercially permissive (MIT + Apache 2.0). It runs on a free Colab T4 GPU.

What it does: expression blend and head rotation blend with adjustable sliders, 512×512 upsampled output.

This is a demo for Face2FaceAI, an Android app I'm building that adds face reinsertion, asymmetry correction, template expressions, and other features — all running on-device. More at face2faceai.com.

The example shows before/after expression swap with face reinsertion (app feature)

[Open in Colab](https://colab.research.google.com/github/face2faceai/liveportrait-expression-swap/blob/main/liveportrait_expression_swap_colab.ipynb) | [GitHub repo](https://github.com/face2faceai/liveportrait-expression-swap)

Feedback welcome — this is my first public release.