Adding audio watermark

The audio watermark, or audio signature, embeds a user's personal information into the outgoing audio as an inaudible watermark. This means that if someone records the meeting, with either a separate microphone or 3rd-party, and shares the audio file without permission, Zoom can assist with determining which participant was responsible.

Local and cloud recordings made directly through Zoom do not contain the audio watermark, as there are other methods to determine who recorded or shared the meeting audio. 

This article covers:

• How to enable audio watermark
• How to request information on an audio file

Prerequisites for adding an audio watermark

• Account owner or admin privileges
• Authentication required to join the meeting
• Zoom desktop client for Windows, macOS, or Linux: Global minimum version or higher
• Zoom mobile app for Android or iOS: Global minimum version or higher

How to enable audio watermark for the account

To enable audio watermark for all users in the account:

1. Sign in to the Zoom web portal as an admin with the privilege to edit account settings.
2. In the navigation panel, click Account Management then Account Settings.
3. Click the Meeting tab.
4. Under Schedule Meeting, verify that Add audio watermark is enabled.
5. If the setting is disabled, click the toggle to enable it. If a verification dialog box appears, click Turn On to verify the change.
6. (Optional) If you want to make this setting mandatory for all users in your account, click the lock icon , and then click Lock to confirm the setting.

   Note: This will require the meeting options Only signed-in users can join the meeting or Only signed-in users with specified domains can join meetings to also be locked on.

How to request information on an audio file

If you need to know who recorded an audio file, submit a request to Zoom Support. In your request, include the Meeting ID, date and time of occurrence, and the recording file (video or audio file).

Note: The file must have audio of at least 2 minutes in length.