Code from the 2021 Signal Video Superclass

Overview

Twilio Video Demo

This is the code written during the live Twilio Video demo during Twilio's Signal 2021 Superclass.

It creates a simple Video application that displays a virtual knitting circle and populates each yarn ball with an HTML video element when a participant enters the Room.

The main branch contains the base code where we began our live demo. Check out the superclass-demo branch to see the completed code that we wrote during the session.

Running the application

You'll need Python3 to get this running. To install the required dependencies:

python3 -m venv venv  # create a virtual environment
source venv/bin/activate
pip install -r requirements.txt

Next, create a .env file. You'll put your account credentials in that file, so that the Flask server can connect to Twilio.

touch .env

In the .env file, you'll want these credentials:

TWILIO_ACCOUNT_SID=
   
    
TWILIO_API_KEY=
    
     
TWILIO_API_SECRET=
     

     
    
   

You can find your account SID in the Twilio Console Dashboard.

You can create a new API key and get the secret through the Twilio Console.

To run the Flask server:

source venv/bin/activate
python server.py

This will start a server that you can access on your local machine at port 5000 (localhost:5000). You can view the application at http://localhost:5000.

Can't wait to see what you build with Twilio Video!

Other branches

  • superclass-demo: The code we wrote in this class (to be committed after the demo is over)
  • blurred-backgrounds: Uses Twilio's Video Processors to blur a participant's background
  • livestream: Uses Twilio Live to livestream the video room
  • full-commented-code: A full version of the application we're building during the Superclass, with comments on each aspect

Other Resources

Troubleshooting and Diagnostics

Virtual Backgrounds and Custom Video Filters

Twilio Live

Other

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