HTML | DOM Video videoTracks Property
The Video videoTracks property is used for returning a VideoTrackList object. The VideoTrackList object is generally used for representing the available video tracks available for a video.
Each video track which is available is represented by a separate VideoTrack Object.
Syntax:
videoObject.videoTracks
Return Values:
- VideoTrackList Object: It represents the available video tracks for the video.
- videoTracks.length: It is used to get the number of text tracks available in the video.
- videoTracks[index]: It is used to get VideoTrack object by index.
- VideoTrackList Object: It is used to represent the available video tracks for the video.
- videoTracks.getTrackById(id): It is used to get VideoTrack object by id.
- VideoTrack Object: It represents a video track.
- kind: It is used to get the type of the video track.
- label: It is used to get the label of the video track.
- language: It is used to get the language of video text track.
- id: It is used to get the id of the video track.
- selected: It is used to get or set if the track is active.
Below program illustrates the Video videoTracks property :
Example: Getting the number of available video tracks.
HTML
<!DOCTYPE html> < html > < head > < title > DOM Video videoTracks Property </ title > </ head > < body style = "text-align: center" > < h1 style = "color: green" > w3wiki </ h1 > < h2 style = "font-family: Impact" > Video videoTracks Property </ h2 > < br > < video id = "Test_Video" width = "360" height = "240" controls> < source src = "sample2.mp4" type = "video/mp4" > < source src = "sample2.ogg" type = "video/ogg" > </ video > < p >To get the number of available video tracks of the video, double click the "Return Video Tracks" button. < br > < button ondblclick = "My_Video()" > Return Video Tracks </ button > < p id = "test" ></ p > < script > function My_Video() { var v = document.getElementById( "Test_Video").videoTracks.length; document.getElementById("test").innerHTML = v; } </ script > </ body > </ html > |
Output:
- Before clicking the button:
- After clicking the button:
Supported Browsers: The major browsers are not supported by HTML | DOM Video videoTracks Property.
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Apple Safari 7
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