This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Draft
This page is not complete.
The trackDefaults property of the SourceBuffer interface specifies the default values to use if kind, label, and/or language information is not available in the initialization segment of the media to be appended to the SourceBuffer.
var myTrackDefaults = sourceBuffer.trackDefaults; sourceBuffer.trackDefaults = myTrackDefaultList;
A TrackDefaultList object.
The following errors may be thrown when setting a new value for this property.
| Error | Explanation |
|---|---|
InvalidStateError | One or more of the SourceBuffer objects in MediaSource.sourceBuffers are being updated (i.e. their SourceBuffer.updating property is currently true), or this SourceBuffer has been removed from the MediaSource. |
TBD
| Specification | Status | Comment |
|---|---|---|
| Media Source Extensions The definition of 'trackDefaults' in that specification. | Recommendation | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | ? | ? | No | ? | ? | ? |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | ? | ? | ? | No | ? | No | ? |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/trackDefaults