MediaSessionActionDetails.seekOffset

The MediaSessionActionDetails dictionary's seekOffset property is an optional value passed into the action handler callback to provide the number of seconds the seekforward and seekbackward actions should move the playback time by.

Syntax

let mediaSessionActionDetails = { seekOffset: deltaTimeInSeconds };

let deltaTime = mediaSessionActionDetails.seekOffset;

Value

A floating-point value indicating the time delta in seconds by which to move the playback position relative to its current timestamp. If the offset isn't specified, the user agent will choose an appropriate offset automatically. This is typically in the range of five to ten seconds.

Specifications

Specification Status Comment
Media Session Standard
The definition of 'MediaSessionActionDetails.seekOffset' in that specification.
Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
seekOffset
Experimental
Chrome Full support 73Edge Full support ≤79Firefox Full support 76
Disabled
Full support 76
Disabled
Disabled From version 76: this feature is behind the dom.media.mediasession.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE ? Opera No support NoSafari ? WebView Android No support NoChrome Android Full support 57Firefox Android No support NoOpera Android No support NoSafari iOS ? Samsung Internet Android Full support 7.0

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also