SourceBuffer.appendWindowStart - Web APIs 编辑

Experimental

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

Draft

This page is not complete.

The 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.

Syntax

var myAppendWindowStart = sourceBuffer.appendWindowStart;

sourceBuffer.appendWindowStart = 2.0;

Value

A double, indicating the start time of the append window, in seconds.

Exceptions

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

Example

TBD

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• MediaSource
• SourceBufferList