flutter + webrtc => python + aiortc + opencv

This demo project should help you to get setup sending a video feed from a flutter app to a python backend to allow you to then perform some image processing on the video frames using OpenCV.

Running the server

First install the required packages:

$ cd server

$ pip install -r requirements.txt

When you start the example, it will create an HTTP server which you can connect to from your browser:

$ cd server

$ python main.py

You can then browse to the following page with your browser:

http://localhost:8080

Once you click Start the browser will send the audio and video from its webcam to the server.

The server will play a pre-recorded audio clip and send the received video back to the browser, optionally applying a transform to it.

In parallel to media streams, the browser sends a ‘ping’ message over the data channel, and the server replies with ‘pong’.


Additional options

If you want to enable verbose logging, run:

$ cd server

$ python server.py -v

Running the server in docker

If you have docker setup, run:

$ cd server

$ docker build -t aiortc_server .

$ docker run -p 8080:8080 -it –rm aiortc_server

You can then browse to the following page with your browser:

http://localhost:8080

Setting up flutter

First install the required packages.

Now you will need to update the /offer path to point to your local python server.


Credits

The server files were borrowed from the aiortc github project.

https://github.com/aiortc/aiortc

GitHub

https://github.com/jcrisp88/flutter-webrtc_python-aiortc-opencv