SourceBuffer.timestampOffset

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Draft
This page is not complete.

The timestampOffset property of the SourceBuffer interface controls the offset applied to timestamps inside media segments that are appended to the SourceBuffer.

The initial value of timestampOffset is 0.

Syntax

var myOffset = sourceBuffer.timestampOffset;

sourceBuffer.timestampOffset = 2.5;

Value

A double, with the offset amount expressed in seconds.

Exceptions

The following exceptions may be thrown when setting a new value for this property.

Exception	Explanation
`InvalidStateError`	One or more of the `SourceBuffer` objects in `MediaSource.sourceBuffers` are being updated (i.e. their `SourceBuffer.updating` property is currently `true`), a media segment inside the `SourceBuffer` is currently being parsed, or this `SourceBuffer` has been removed from the `MediaSource`.

Example

TBD

Specifications

Specification	Status	Comment
Media Source Extensions The definition of 'timestampOffset' in that specification.	Recommendation	Initial definition.

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`timestampOffset`	Chrome Full support 23	Edge Full support 12	Firefox Full support 42 Full support 42 No support 25 — 42 Notes Disabled Notes Limited support to an allowed list of sites, for example YouTube, Netflix, and other popular streaming sites. The limitation was removed when Media Source Extensions was enabled by default in Firefox 42. Disabled From version 25 until version 42 (exclusive): this feature is behind the `media.mediasource.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE Full support 11 Notes Full support 11 Notes Notes Only works on Windows 8+.	Opera Full support 15	Safari Full support 8	WebView Android Full support 4.4.3	Chrome Android Full support 33	Firefox Android No support No	Opera Android Full support 14	Safari iOS No support No	Samsung Internet Android Full support 3.0

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.
User must explicitly enable this feature.: User must explicitly enable this feature.