bot that will get all audio from call / meeting in MS teams

Creating a bot that can automatically connect to any meeting or call, capture audio from all speakers, and save it for later is indeed a complex task. It involves several technical and permission-related challenges.

Firstly, capturing live audio from a meeting requires the bot to join the call. This is because the bot needs to be an active participant in the meeting to access the audio streams. The PSI bot example you mentioned is a good starting point, but the 9999 errors you're encountering likely indicate permission issues. These errors can occur if the bot does not have the necessary permissions to join the call or access the audio streams.

To address these issues, you need to ensure that your bot has the following permissions:

1. Application permissions: These are required for the bot to join calls and access audio streams. You need to configure these permissions in the Azure portal.
2. Delegated permissions: These are required if the bot needs to act on behalf of a user. This might be necessary if the bot needs to join meetings scheduled by different users.

Additionally, you need to handle the following aspects:

• Authentication: Ensure that your bot is properly authenticated and authorized to join the meetings.
• Audio processing: Implement the logic to capture and process the audio streams in real-time.

If you want the audio live and not recorded, you will need to implement a real-time audio processing pipeline. This involves capturing the audio streams, processing them as needed, and then saving or streaming the processed audio.

It's also important to consider the legal and privacy implications of capturing and storing audio from meetings. Make sure to comply with relevant regulations and obtain necessary consents from participants.

Document Link-
1.https://zcusa.951200.xyz/en-us/microsoftteams/platform/bots/calls-and-meetings/real-time-media-concepts
2.https://zcusa.951200.xyz/en-us/microsoftteams/platform/bots/calls-and-meetings/calls-meetings-bots-overview#calls-and-online-meetings-bots
3.https://github.com/microsoftgraph/microsoft-graph-comms-samples/tree/master/Samples/V1.0Samples/LocalMediaSamples/PolicyRecordingBot