audio object (Windows)

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Specifies the sound or audio content, such as music or effects, to be played in a document.

HTML5 A vocabulary and associated APIs for HTML and XHTML, Section 4.8.7

Members

The audio object has these types of members:

Events
Methods
Properties

Events

The audio object has these events.

Event	Description
canplay	Occurs when playback is possible, but would require further buffering.
canplaythrough	Occurs when playback to end is possible without requiring a stop for further buffering.
durationchange	Occurs when the duration attribute is updated.
emptied	Occurs when the media element is reset to its initial state.
ended	Occurs when the end of playback is reached.
loadeddata	Occurs when media data is loaded at the current playback position.
loadedmetadata	Occurs when the duration and dimensions of the media have been determined.
loadstart	Occurs when Internet Explorer begins looking for media data.
pause	Occurs when playback is paused.
play	Occurs when the play method is requested.
playing	Occurs when the audio or video has started playing.
progress	Occurs to indicate progress while downloading media data.
ratechange	Occurs when the playback rate is increased or decreased.
seeked	Occurs when the seek operation ends.
seeking	Occurs when the current playback position is moved.
stalled	Occurs when the download has stopped.
suspend	Occurs if the load operation has been intentionally halted.
timeupdate	Occurs to indicate the current playback position.
volumechange	Occurs when the volume is changed, or playback is muted or unmuted.
waiting	Occurs when playback stops because the next frame of a video resource is not available.

Methods

The audio object has these methods.

Method	Description
canPlayType	Returns a string that specifies whether the client can play a given media resource type.
load	Resets the IHTMLMediaElement and loads a new media resource.
pause	Pauses the current playback and sets paused to true.
play	Loads and starts playback of a media resource.

Properties

The audio object has these properties.

Property	Description
autoplay	Gets or sets a value that indicates whether to start playing the media automatically.
buffered	Gets a collection of buffered time ranges.
controls	Gets or sets a flag that indicates whether the client provides a set of controls for the media (in case the developer does not include controls for the player).
currentSrc	Gets the address or URL of the current media resource (video,audio) that is selected by IHTMLMediaElement.
currentTime	Gets or sets the current playback position, in seconds.
defaultPlaybackRate	Gets or sets the default playback rate when the user is not using fast foward or reverse for a video or audio resource.
duration	Gets the duration, in seconds, of the current media resource, a `NaN` value if duration is not available, or `Infinity` if the media resource is streaming.
ended	Gets information about whether the playback has ended or not.
error	Gets an IHTMLMediaError object representing the current error state of the media element.
initialTime	Gets the earliest possible position, in seconds, that the playback can begin.
loop	Gets or sets a flag that specifies whether playback should restart after it completes.
muted	Gets or sets a flag that indicates whether the audio (either audio or the audio track on video media) is muted.
networkState	Gets the current network activity for the element.
paused	Gets a flag that specifies whether playback is paused.
playbackRate	Gets or sets the current speed for the media resource to play. This speed is expressed as a multiple of the normal speed of the media resource.
played	Gets TimeRanges for the current media resource that has been played.
preload	Gets or sets a hint to how much buffering is advisable for a media resource, even if autoplay is not specified.
seekable	Returns a TimeRanges object that represents the ranges of the current media resource that can be seeked.
seeking	Gets a flag that indicates whether the the client is currently moving to a new playback position in the media resource.
src	The address or URL of the a media resource (video, audio) that is to be considered.
volume	Gets or sets the volume level for audio portions of the media element.

Standards information

HTML5 A vocabulary and associated APIs for HTML and XHTML, Section 4.8.7

Remarks

Beginning with a Windows Store app using JavaScript, any audio or video content needs the correct mime type set on the server, or the files won't play. a Windows Store app using JavaScript and a Windows Store app using JavaScript support MP3 audio, and MP4 audio and video. WebM audio and video files can be supported by installing the WebM components from The WebM project. The following table shows the required settings for your web server to host these files correctly.

Media file to serve	Extension setting	Mime type setting
Audio mp3	mp3	audio/mpeg
Audio mp4	m4a	audio/mp4
Audio WebM	webm	audio/webm
Video mp4	mp4	video/mp4
Video webm	webm	video/webm

The following extensions are available to theAudio object when used in a Windows Store app built for Windows using JavaScript.

Microsoft Extension	Description
msClearEffects	Clears all effects from the media pipeline.
msInsertAudioEffect	Inserts the specified audio effect into media pipeline.
msSetMediaProtectionManager	Specifies the media protection manager for a given media pipeline.
msAudioCategory	Specifies the purpose the audio or video media, such as background audio or alerts.
msAudioDeviceType	Specifies the output devices that the audio will be sent to.
msPlayToDisabled	Gets or sets whether the DLNA PlayTo device is available.
msPlayToPrimary	Gets or sets the primary DLNA PlayTo device.
msPlayToSource	Gets the source associated with the media element for use by the PlayToManager.
msRealTime	Specifies whether or not to enable low-latency playback on the media element.

For information on audio formats supported on the Audio tag when used in a Windows Store app using JavaScript, see Supported audio and video formats.

For an example of audio and video playback in a Windows Store app using JavaScript, see the HTML media playback sample.

For additional information on creating Windows Store apps using JavaScript, see Roadmap for Windows Store apps using JavaScript.

For additional information on playing audio and video in a Windows Store app using JavaScript, see Adding multimedia. For information on audio and video performance, see Audio and video performance.

audio object