duck_transcriber

Overview

This is a serverless Telegram bot that transcribes voice, audio, and video notes sent to it using the Groq Whisper API. It also stores and retrieves transcriptions using AWS DynamoDB.

How It Works

1. The bot receives a voice, audio, or video note message from a user.
2. It downloads the file from Telegram and checks its duration. If the duration is above a specified limit, it sends a warning message to the user and exits.
3. The bot checks if the transcription already exists in AWS DynamoDB. If it does, the saved transcription is sent back to the user.
4. If no transcription is found, the bot transcribes the audio using the Groq Whisper API.
5. The transcription is sent back to the user as a text message and stored in DynamoDB for future reference.

Supported Commands

• /start: Initializes the bot and provides a welcome message.
• /help: Provides information on how to use the bot and its features.
• more coming soon!

Technical Details

• The bot is built using the teloxide crate for interacting with the Telegram API.
• The transcription is done using the reqwest crate to send a request to the Groq Whisper API.
• The bot uses AWS DynamoDB to store and retrieve transcriptions, ensuring that repeated requests for the same audio do not require retranscription.
• The bot is deployed as a serverless function using AWS Lambda.

Environment Variables

• TELEGRAM_BOT_TOKEN: the token for the Telegram bot.
• GROQ_API_KEY: the API key for the Groq Whisper API.
• DYNAMODB_TABLE: the name of the DynamoDB table where transcriptions are stored.

Deployment

Before deploying this bot, ensure you have the following prerequisites installed:

• AWS CLI: Follow the instructions here to install the AWS Command Line Interface.
• cargo-lambda: Install cargo-lambda (not with cargo, it doesn't support cross compilation) by following the instructions here.

To build:

cargo lambda build --release --arm64

To deploy:

cargo lambda deploy

AWS Lambda Permissions

Ensure that your AWS Lambda function has the necessary permissions to access DynamoDB. You will need to attach a policy that grants the Lambda function read and write permissions to the DynamoDB table. This can be done by attaching the AWSLambdaDynamoDBExecutionRole managed policy or by creating a custom policy with the necessary permissions.

License

Do literally whatever you want with this code. I don't care.

Contributing

Contributions are welcome! If you'd like to help improve this bot, please open a pull request with your changes.