This is a web app that let’s you swap your face in real-time without having a powerful
machine. You can try it out live here.

See the gif below for a demo:

I discovered the Deep Live Cam project and tried to run it on my M1 MacBook, but only got 0.5 FPS. So I wanted to explore how fast and at what latency you could get this to run on a remote server via WebRTC.

To run this yourself you wil need:

• uv
• A modal account as well configured credentials

Then you can run the following command to start the server:

uv run modal serve facestream.main

Or this command to deploy it:

uv run modal deploy facestream.main

On most cellular networks you need a TURN server for WebRTC to work. You can create a TURN app on Cloudflare. To use those with this app you need to:

1. Create a secret called facestream in modal with the following values:

TURN_TOKEN_ID=your-turn-token-id
TURN_API_TOKEN=your-turn-api-token

2. Comment out the following line in src/facestream/main.py:

...
secret