It uses google-speech to text api, google speech to text API and google translation api to dub the video from one language to another.

1. Create a new Google Cloud Project.

2. Enable these Google Cloud APIs:

• Speech-to-Text
• Text-to-Speech
• Translation

3. Create a virtualenv:

    python3 -m venv venv
    source ./venv/bin/activate
   

4. Install the python dependencies:

    pip install -r requirements.txt
   

5. Viola! You should be good to go.