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• 句法
• Video track kind strings
• 规范
• 浏览器兼容性
• 相关话题

kind property contains a string indicating the category of video contained in the VideoTrack . kind can be used to determine the scenarios in which specific tracks should be enabled or disabled. See Video track kind strings for a list of the kinds available for video tracks.

句法

var trackKind = VideoTrack.kind;
					

值

A DOMString specifying the type of content the media represents. The string is one of those found in Video track kind strings 下文。

Video track kind strings

The kinds available for video tracks are:

"alternative"

A potential alternative to the main track, such as a different video take or a version of the soundtrack with only the music and no dialogue.

"captions"

A version of the main video track with captions burnt in.

"main"

The primary video track.

"sign"

A sign-language interpretation of an audio track.

"subtitles"

A version of the main video track with subtitles burnt in.

"commentary"

A video track containing a commentary. This might be used to contain the director's commentary track on a movie, for example.

"" (empty string)

The track doesn't have an explicit kind, or the kind provided by the track's metadata isn't recognized by the 用户代理 .

规范

规范	状态	注释
HTML 实时标准 The definition of 'VideoTrack: kind' in that specification.	实时标准

浏览器兼容性

The compatibility table in 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
kind	Chrome 45 Disabled 45 Disabled Disabled From version 45: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled ). To change preferences in Chrome, visit chrome://flags.	Edge 79 Disabled 79 Disabled Disabled From version 79: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled ). 不支持 12 — 79	Firefox 33	IE 10	Opera 32 Disabled 32 Disabled Disabled From version 32: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled ).	Safari 6.1	WebView Android 45	Chrome Android 45 Disabled 45 Disabled Disabled From version 45: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled ). To change preferences in Chrome, visit chrome://flags.	Firefox Android 33	Opera Android 32 Disabled 32 Disabled Disabled From version 32: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled ).	Safari iOS 7	Samsung Internet Android No

图例

完整支持

完整支持

不支持

不支持

用户必须明确启用此特征。

用户必须明确启用此特征。

元数据

• 最后修改： Mar 18, 2019

相关话题

1. VideoTrack
2. 特性

   1. id
   2. kind
   3. label
   4. 语言
   5. selected
   6. sourceBuffer
3. HTML DOM 相关页面

   1. BeforeUnloadEvent
   2. DOMStringMap
   3. ErrorEvent
   4. GlobalEventHandlers
   5. HTMLAnchorElement
   6. HTMLAreaElement
   7. HTMLAudioElement
   8. HTMLBRElement
   9. HTMLBaseElement
   10. HTMLBaseFontElement
   11. HTMLBodyElement
   12. HTMLButtonElement
   13. HTMLCanvasElement
   14. HTMLContentElement
   15. HTMLDListElement
   16. HTMLDataElement
   17. HTMLDataListElement
   18. HTMLDialogElement
   19. HTMLDivElement
   20. HTMLDocument
   21. HTMLElement
   22. HTMLEmbedElement
   23. HTMLFieldSetElement
   24. HTMLFormControlsCollection
   25. HTMLFormElement
   26. HTMLFrameSetElement
   27. HTMLHRElement
   28. HTMLHeadElement
   29. HTMLHeadingElement
   30. HTMLHtmlElement
   31. HTMLIFrameElement
   32. HTMLImageElement
   33. HTMLInputElement
   34. HTMLIsIndexElement
   35. HTMLKeygenElement
   36. HTMLLIElement
   37. HTMLLabelElement
   38. HTMLLegendElement
   39. HTMLLinkElement
   40. HTMLMapElement
   41. HTMLMediaElement
   42. HTMLMetaElement
   43. HTMLMeterElement
   44. HTMLModElement
   45. HTMLOListElement
   46. HTMLObjectElement
   47. HTMLOptGroupElement
   48. HTMLOptionElement
   49. HTMLOptionsCollection
   50. HTMLOutputElement
   51. HTMLParagraphElement
   52. HTMLParamElement
   53. HTMLPictureElement
   54. HTMLPreElement
   55. HTMLProgressElement
   56. HTMLQuoteElement
   57. HTMLScriptElement
   58. HTMLSelectElement
   59. HTMLShadowElement
   60. HTMLSourceElement
   61. HTMLSpanElement
   62. HTMLStyleElement
   63. HTMLTableCaptionElement
   64. HTMLTableCellElement
   65. HTMLTableColElement
   66. HTMLTableDataCellElement
   67. HTMLTableElement
   68. HTMLTableHeaderCellElement
   69. HTMLTableRowElement
   70. HTMLTableSectionElement
   71. HTMLTemplateElement
   72. HTMLTextAreaElement
   73. HTMLTimeElement
   74. HTMLTitleElement
   75. HTMLTrackElement
   76. HTMLUListElement
   77. HTMLUnknownElement
   78. HTMLVideoElement
   79. HashChangeEvent
   80. 历史
   81. ImageData
   82. 定位
   83. MessageChannel
   84. MessageEvent
   85. MessagePort
   86. Navigator
   87. NavigatorGeolocation
   88. NavigatorID
   89. NavigatorLanguage
   90. NavigatorOnLine
   91. NavigatorPlugins
   92. PageTransitionEvent
   93. Plugin
   94. PluginArray
   95. PopStateEvent
   96. PortCollection
   97. PromiseRejectionEvent
   98. RadioNodeList
   99. Transferable
   100. ValidityState
   101. Window
   102. WindowBase64
   103. WindowEventHandlers
   104. WindowTimers