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calls-recorder

A headless recorder for Mattermost Calls. This works by running a Docker container that does the following:

  • Spawns a Chromium browser running on a Xvfb display.
  • Logs a bot user and connects it to the call using chromedp.
  • Grabs the screen and audio using ffmpeg and outputs to a file.
  • Creates a post in the specified channel with the recording file attached.

Usage

This program is not meant to be run directly (nor manually) other than for development/testing purposes. In fact, this is automatically used by the calls-offloader service to run recording jobs. Please refer to that project if you are looking to enable call recordings in your Mattermost instance.

Manual execution (testing only)

Fetch the latest image

The latest official docker image can be found at https://hub.docker.com/r/mattermost/calls-recorder.

docker pull mattermost/calls-recorder:latest

Run the container

docker run --network=host --name calls-recorder -e "SITE_URL=http://127.0.0.1:8065/" -e "AUTH_TOKEN=ohqd1phqtt8m3gsfg8j5ymymqy" -e "CALL_ID=9c86b3q57fgfpqr8jq3b9yjweh" -e "POST_ID=e4pdmi6rqpn7pp9sity9hiza3r" -e "DEV_MODE=true" -v calls-recorder-volume:/data mattermost/calls-recorder

Note

This process requires Mattermost Server >= v7.6 with the latest Mattermost Calls version installed.

Note

  • SITE_URL: The URL pointing to the Mattermost installation.
  • AUTH_TOKEN: The authentication token for the Calls bot.
  • CALL_ID: The channel ID in which the call to record has been started.
  • POST_ID: The post ID the recording file should be attached to.

Note

The auth token for the bot can be found through this SQL query:

SELECT Token FROM Sessions JOIN Bots ON Sessions.UserId = Bots.UserId AND Bots.OwnerId = 'com.mattermost.calls' ORDER BY Sessions.CreateAt DESC LIMIT 1;

Development

Run make help to see available options.

Acknowledgements

Kudos to https://github.com/livekit/livekit-recorder for the idea and code that's been ported here.