Jitsi-meet: Don't enable camera and microphone at startup

[piegamesde]

Is your feature request related to a problem you are facing?
When joining a new meeting, microhpone and camera are enabled and active by default (if available). This has several issues:

• Devices with no camera always get an annoying "could not access camera" pop up on every meeting they join (takes two clicks to hide)
• Using the camera when not strictly needed is a waste of bandwidth. Users should activate it when they need, not the other way around.
• Privacy implications. I've had numerous conferences where I saw a user's web cam cover. They hadn't noticed their camera was active. Many people don't have a web cam cover though.

Describe the solution you'd like

Don't enable webcam and microphone by default when joining a new meeting.

Describe alternatives you've considered

Only applying this for the camera would already be a big improvement.

[damencho]

These configs are already available:
https://github.com/jitsi/jitsi-meet/blob/master/config.js#L97
https://github.com/jitsi/jitsi-meet/blob/master/config.js#L136

[piegamesde]

Way too few instances use this configuration. The default option should be the other way around.

[saghul]

We have added a pre-join screen (it's on master, but not yet deployed to meet.jit.si) which allows you to select what devices you'd like to use (or mute them) before joining.

[piegamesde]

The pre-join screen does not solve the issue in all cases, please reopen. The pre-join screen is great, however it is only shown if someone manually enables that feature for the room. This is rarely the case and (by definition) never for the first one entering any room.

[pixelbrackets]

These configs are already available:
https://github.com/jitsi/jitsi-meet/blob/master/config.js#L97
https://github.com/jitsi/jitsi-meet/blob/master/config.js#L136

Just a quick note since these links don't work anymore and the issue is a top search result:

https://github.com/jitsi/jitsi-meet/blob/4c635a2a634ede02b1d40c9b03cb15f2b2ed709f/config.js#L97 → startWithAudioMuted to true
https://github.com/jitsi/jitsi-meet/blob/4c635a2a634ede02b1d40c9b03cb15f2b2ed709f/config.js#L136 → startWithVideoMuted to true