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.
Syntax
var myTrackDefaults = sourceBuffer.trackDefaults; sourceBuffer.trackDefaults = myTrackDefaultList;
Value
A TrackDefaultList object.
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), or this SourceBuffer has been removed from the MediaSource. |
Example
TBD
Specifications
| Specification | Status | Comment |
|---|---|---|
| Media Source Extensions The definition of 'trackDefaults' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
trackDefaults | Chrome ? | Edge ? | Firefox No support No | IE ? | Opera ? | Safari ? | WebView Android ? | Chrome Android ? | Firefox Android No support No | Opera Android ? | Safari iOS No support No | Samsung Internet Android ? |
Legend
- No support
- No support
- Compatibility unknown
- Compatibility unknown