This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Draft
This page is not complete.
The appendWindowEnd property of the SourceBuffer interface controls the timestamp for the end of the append window, a timestamp range that can be used to filter what media data is appended to the SourceBuffer. Coded media frames with timestamps wthin this range will be appended, whereas those outside the range will be filtered out.
The default value of appendWindowEnd is positive infinity.
Syntax
var myAppendWindowEnd = sourceBuffer.appendWindowEnd; sourceBuffer.appendWindowEnd = 120.0;
Value
A double, indicating the end time of the append window, in seconds.
Errors
The following errors may be thrown when setting a new value for this property.
| Error | Explanation |
|---|---|
InvalidAccessError |
An attempt was made to set the value to less than or equal to SourceBuffer.appendWindowStart, or NaN. |
InvalidStateError |
This SourceBuffer object is being updated (i.e. its SourceBuffer.updating property is currently true), or this SourceBuffer has been removed from the MediaSource. |
Example
TBD
Specifications
| Specification | Status | Comment |
|---|---|---|
| Media Source Extensions The definition of 'appendWindowEnd' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 31 23 — 31 -webkit- | 12 | 42 | 113 | 15 | 8 |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 33 | ? | Yes | No | 30 | No | ? |
1. Limited support to a whitelist of sites, for example YouTube, Netflix, and other popular streaming sites. The whitelist was removed when Media Source Extensions was enabled by default in Firefox 42.
2. From version 25 until version 42 (exclusive): this feature is behind the media.mediasource.enabled preference. To change preferences in Firefox, visit about:config.
3. Only works on Windows 8+.