Help Center
Overview
Meeting attendees can choose to turn their video or microphone on or off when joining a meeting. This can be done by updating the settings on the Zoom app.
Pre-Requisites
- Users must have a Zoom account in order to update their settings
Instructions
Windows | 
MacTo turn off video or audio by default when joining a meeting, click your profile picture then click Settings in the Zoom client.
To disable your Microphone when joining a meeting, click Audio and select Always mute microphone when joining meeting.
To disable Video when joining a meeting, click Video and selecting Turn off my video when joining meeting.
You can also disable audio or video before joining a meeting by toggling the following options after clicking "Join a Meeting:"
Android | To turn off video or audio by default when joining a meeting, select Meeting in the Zoom app settings. 
You can disable your Microphone when joining a meeting by selecting the following option:
You can disable Video when joining a meeting by selecting the following option:
You can also disable audio or video before joining a meeting by toggling the following options after clicking "Join a Meeting:"
