EncryptedMediaExtensions

Enable or disable Encrypted Media Extensions (EME) and optionally lock it. EME allows Firefox to play DRM-controlled content using a Content Decryption Module such as Google Widevine.

Compatibility

Firefox	Firefox ESR	Firefox Enterprise
Available since 77	Available since 68.9.0	Available since 149

CCK2 Equivalent: N/A
OMA-URI: EncryptedMediaExtensions
Preferences Affected: media.eme.enabled

Examples

policies.json

{
  "policies": {
    "EncryptedMediaExtensions": {
      "Enabled": true,
      "Locked": true
    }
  }
}

JSON schema

EncryptedMediaExtensions JSON schema

{
  "type": "object",
  "properties": {
    "Enabled": {
      "type": "boolean"
    },
    "Locked": {
      "type": "boolean"
    }
  }
}

Values

• If Enabled is set to false, encrypted media extensions (like Widevine) are not downloaded by Firefox unless the user consents to installing them.
• If Locked is set to true and Enabled is set to false, Firefox will not download encrypted media extensions (like Widevine) or ask the user to install them.

Windows (GPO)

Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions\Enabled = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions\Locked = 0x1 | 0x0

macOS

<dict>
  <key>EncryptedMediaExtensions</key>
  <dict>
    <key>Enabled</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

See also

• Watch DRM content on Firefox on support.mozilla.org
• Encrypted Media Extensions API on MDN