---
title: MDESupportsUniversalURLPlayback
framework: bundleresources
role: symbol
role_heading: Property List Key
path: bundleresources/information-property-list/mdesupportsuniversalurlplayback
---

# MDESupportsUniversalURLPlayback

A Boolean value that indicates whether an app supports URL-based playback via a media device extension.

## Discussion

Discussion Set this key to true in your media app’s Info.plist file to turn on the AVSystemRoute.LaunchMode.player launch mode, which uses the remote device’s built-in media player to play a URL: <key>MDESupportsUniversalURLPlayback</key> <true/> When you set this key to true, your app can start a playback session using AVSystemRouteSession with a media URL and the AVSystemRoute.LaunchMode.player launch mode. The system routes the URL to the device’s built-in player without requiring a corresponding application on the remote device. If you don’t set this key to true, calls to start() with the AVSystemRoute.LaunchMode.player launch mode fail.

## See Also

### AVSystemRouting

- [MDESupportedProtocols](bundleresources/information-property-list/mdesupportedprotocols.md)