Connect Audio Utils

This is a set of lambda and ffmpeg powered tools for working with audio from Amazon Connect

Tools

Connect Audio Utils Layer

This layer includes:

• statically compiled ffmpeg
• boto3
• pydub
• requests
• ffmpeg-python

Overlay Audio

This function overlays two audio tracks and accepts input in the following form:

{
    "sources": [{
        "Bucket": "",
        "Key": ""
    },
    {
        "Bucket": "",
        "Key": ""
    }],
    "target": {
        "Bucket": "",
        "Key": ""
    }
}

Redact Audio

This function mutes/removes sections of audio from a track based no timestamps and accepts input in the following form:

{
    "source": {
        "Bucket": "",
        "Key": ""
    },
    "target": {
        "Bucket": "",
        "Key": ""
    },
    "timestamps": [
        {"begin": "1000", "end": "2000"},
        {"begin": "5000", "end": "8000"}
    ]
}

Build Instructions

1. Install CDK (npm i -g aws-cdk)

2. First build the layer:

   cd resources/connect-audio-utils-layer
   mkdir bin/
   curl -s https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz | tar -xJC bin --strip=1 'ffmpeg-*-amd64-static/ffmpeg'
   docker run --rm -v $(pwd):/foo -w /foo lambci/lambda:build-python3.8 pip3 install -r requirements.txt -t python
   zip -r9 layer.zip bin python -x "*.pyc"

3. Change back to root directory of project cd ../..

4. Install deps: npm install

5. Next run npm run build

6. Deploy with run cdk deploy (you may need to run cdk bootstrap first)

Useful commands

• npm run build compile typescript to js
• npm run watch watch for changes and compile
• npm run test perform the jest unit tests
• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template

License

This project is licensed under the Apache-2.0 License.