How to Capture and Transcribe Tab Audio in Real Time

[MUHAMMAD-ALI-BILAL]

Hey everyone! 👋

I'm working on a Chrome Extension and I’d love some help or advice from the community.

Goal:

1. When I join a web-based video call (Zoom, Google Meet, Skype, etc.) in Chrome, I want my extension to:
2. Capture the audio of the person speaking to me (not my microphone input, but the other person’s audio).
3. Send that audio to Deepgram’s Speech-to-Text API.
4. Show the real-time transcription in the extension popup or sidebar.

Challenges:

1. I’m not sure how to programmatically capture the tab audio or output audio for the current meeting.
2. I’m also unsure how to handle live audio streaming to Deepgram's API and process responses efficiently.

Questions:

1. Has anyone done something similar or have experience with chrome.tabCapture or related APIs?
2. Are there privacy or permission hurdles I should be aware of?
3. Any tips on how to pipe audio in real time from a tab into Deepgram?

If anyone has pointers, example code, or just general advice on this, I’d really appreciate it! Thanks in advance! 🙏

[mecodeatlas]

Thanks for posting in the GitHub Community, @MUHAMMAD-ALI-BILAL!

We're happy you're here. You are more likely to get a useful response if you are posting your question in the applicable category, the Discussions category is solely related to conversations around the GitHub product Discussions. This question should be in the Programming Help category. I've gone ahead and moved it for you. Good luck!

[Tushar051]

To capture and transcribe tab audio in real time, you can use these general steps:

Capture Audio: Use the Web Audio API along with the Chrome tabCapture API (or similar browser extension APIs) to capture the audio stream from the active browser tab.

Process Audio: Stream the captured audio data to a server or process it locally.

Transcribe Audio: Use a speech-to-text service like Google Cloud Speech-to-Text, Microsoft Azure Speech Service, or OpenAI Whisper API to convert the audio stream into text in real time.

Display Results: Show the transcribed text live on your app interface.

[RachidZahrani]

Hey there! 👋

That sounds like an interesting project! Here are some tips to help you out:

Capturing Tab Audio: You can use the chrome.tabCapture API to capture audio from the active tab. Make sure to request the necessary permissions in your manifest.json file. Here's a basic example to get you started:

chrome.tabCapture.capture({ audio: true }, function(stream) {
// Handle the audio stream here
});

Streaming to Deepgram: For real-time audio streaming, you can use the WebSocket API to send audio chunks to Deepgram. You'll need to convert the audio stream into the appropriate format (like PCM) before sending it.
Privacy and Permissions: Be aware that capturing audio from a tab may require user consent. Make sure to inform users about what data you're capturing and how it will be used. Check the Chrome Web Store policies to ensure compliance.
Example Code: Look for existing projects on GitHub that use chrome.tabCapture and WebSockets for audio streaming. They can provide valuable insights and code snippets.