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appendWindowStart property of the
SourceBuffer interface controls the timestamp for the start 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
appendWindowStart is the presentation start time, which is the beginning time of the playable media.
var myAppendWindowStart = sourceBuffer.appendWindowStart; sourceBuffer.appendWindowStart = 2.0;
A double, indicating the start time of the append window, in seconds.
The following errors may be thrown when setting a new value for this property.
||An attempt was made to set the value to less than 0, or a value greater than or equal to
|Media Source Extensions
The definition of 'appendWindowStart' in that specification.
23 — 31 -webkit-
|Feature||Android webview||Chrome for Android||Edge mobile||Firefox for Android||Opera Android||iOS Safari||Samsung Internet|
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 (needs to be set to
true). To change preferences in Firefox, visit about:config.
3. Only works on Windows 8+.