This API lets MediaSource apps more effectively customize the HTMLMediaElement.seekable range logic by providing (or removing) a single seekable range that is union'ed with the current buffered ranges to result in a single seekable range which fits both, when media duration is infinite.

Demo

• https://googlechrome.github.io/samples/media/live-seekable-range.html

Documentation

• https://www.w3.org/TR/media-source/#dom-mediasource-setliveseekablerange
• https://www.w3.org/TR/media-source/#dom-mediasource-clearliveseekablerange
• https://www.w3.org/TR/media-source/#htmlmediaelement-extensions

Specification

Specification link

Status: Final published standard: Recommendation, Living Standard, Candidate Recommendation, or similar final form

Status in Chromium

Blink components: Blink>Media

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: In development
• Edge: Positive
• Safari: No signal
• Web Developers: Positive

Owner

• wolenetz@chromium.org

Comments

The spec change was kept simple to not break existing HTMLMediaElement behavior for seekable. New behavior occurs only if the new {set,clear}LiveSeekableRanges API is used on the MediaSource attached to that HTMLMediaElement and the media duration is positive infinity.

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Last updated on 2021-05-05