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MediaDevices

The corresponding JS API docs is here MediaDevices.

Usage#

MediaDevices mediaDevices = await navigator.mediaDevices;
MediaStream stream = await mediaDevices.getUserMedia({  'audio': true,  'video': true,});
MediaStream displayStream = await mediaDevices.getDisplayMedia({  'video': true,  'audio': true,});
List<MediaDeviceInfo> devices = await mediaDevices.enumerateDevices();

Methods#

  • getUserMedia: Returns a Promise that resolves to a MediaStream object. The MediaStream object represents a stream of media content, typically (but not necessarily) including both audio and video.
MediaStream stream = await mediaDevices.getUserMedia({  'audio': true,  'video': true,});
  • getDisplayMedia: Returns a Promise that resolves to a MediaStream object. The MediaStream object represents a stream of media content, typically (but not necessarily) including both audio and video.
MediaStream stream = await mediaDevices.getDisplayMedia({  'video': true,  'audio': true,});
  • enumerateDevices: Returns a Promise that resolves to an array of MediaDeviceInfo objects, each of which represents a media input or output device.
List<MediaDeviceInfo> devices = await mediaDevices.enumerateDevices();

  • getSupportedConstraints: Returns a dictionary object that specifies the media constraints supported by the user agent. only support for web platform.

  • selectAudioOutput: select audio output device. support platforms: macOS/Windows/Linux/Web.

Event Callbacks#

  • onDeviceChange: The ondevicechange event handler for the MediaDevices interface. It is called when a media input or output device is attached or removed.