Amazon Developer

Console

as

Settings
Sign out
Notifications
Alexa
Amazon Appstore
Ring
AWS
Documentation
Support
Contact Us
My Cases

Console

as

Get Started
Design and Develop
Publish
Reference
Support
Skip to main content
For additional information, see https://www.w3.org/TR/media-source-2/#sourcebuffer.

​
Extends

​
Properties

​
appendWindowEnd

appendWindowEnd: number Get or set the append window end position in seconds. For additional information, see https://www.w3.org/TR/media-source-2/#dom-sourcebuffer-appendwindowend.

​
appendWindowStart

appendWindowStart: number Get or Set the append window start position in seconds. For additional information, see https://www.w3.org/TR/media-source-2/#dom-sourcebuffer-appendwindowstart.
Last modified on February 25, 2026