在此页

• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

MediaTrackSettings dictionary's displaySurface property indicates the type of display surface being captured.

句法

displaySurface = mediaTrackSettings.displaySurface;
					

值

值 displaySurface is a string that comes from the DisplayCaptureSurfaceType enumerated type, and is one of the following:

application

The stream's video track contains all of the windows belonging to the application chosen by the user. The windows are aggragated into a single video track, with any empty space filled with a backdrop; that backdrop is selected by the 用户代理 .

浏览器

The stream's video track presents the entire contents of a single browser tab which the user selected during the getDisplayMedia() 调用。

monitor

The video track in the stream presents the complete contents of one or more of the user's screens. Any empty space (if the displays are of different dimensions) is filled with a backdrop chosen by the user agent.

window

The stream's video track presents the contents of a single window selected by the user. The window may be from any application, not necessarily just from within the user agent.

Not all user agents support all of these surface types.

规范

规范	状态	注释
Screen Capture The definition of 'MediaTrackSettings.displaySurface' in that specification.	工作草案	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
displaySurface	Chrome 71	Edge ≤79	Firefox No	IE No	Opera Yes	Safari ?	WebView Android 71	Chrome Android 71	Firefox Android No	Opera Android ?	Safari iOS ?	Samsung Internet Android 10.0

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

另请参阅

• Screen Capture API
• Using the screen capture API
• Capabilities, constraints, and settings
• MediaDevices.getDisplayMedia()
• MediaStreamTrack.getConstraints()
• MediaStreamTrack.applyConstraints()
• MediaStreamTrack.getSettings()

元数据

• 最后修改： Dec 23, 2019

相关话题

1. Media Streams API
2. MediaTrackSettings
3. 特性

   1. aspectRatio
   2. autoGainControl
   3. channelCount
   4. cursor
   5. deviceId
   6. displaySurface
   7. echoCancellation
   8. facingMode
   9. frameRate
   10. groupId
   11. height
   12. latency
   13. noiseSuppression
   14. sampleRate
   15. sampleSize
   16. volume
   17. width
4. Related pages for Media Capture and Streams

   1. AudioStreamTrack
   2. BlobEvent
   3. CanvasCaptureMediaStream
   4. ConstrainBoolean
   5. ConstrainDOMString
   6. ConstrainDouble
   7. ConstrainLong
   8. DoubleRange
   9. HTMLCanvasElement.captureStream()
   10. LongRange
   11. MediaDevices
   12. MediaStream
   13. MediaStreamTrack
   14. MediaStreamTrackEvent
   15. MediaTrackCapabilities
   16. MediaTrackConstraints
   17. MediaTrackSupportedConstraints
   18. Navigator.mediaDevices
   19. NavigatorUserMedia
   20. NavigatorUserMediaError
   21. VideoStreamTrack
   22. navigator.mediaDevices.getUserMedia()