Document ManagedMediaSource, ManagedSourceBuffer, and BufferedChangeEvent APIs#43281
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Document ManagedMediaSource, ManagedSourceBuffer, and BufferedChangeEvent APIs#43281
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BufferedChangeEvent APIs
pepelsbey
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chrisdavidmills
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Mar 2, 2026
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Nice work, @pepelsbey. A bunch of comments for you to look at, but nothing major.
files/en-us/web/api/managedmediasource/managedmediasource/index.md
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Co-authored-by: Chris Mills <chrisdavidmills@gmail.com>
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@chrisdavidmills I applied some changes and moved the demo to dom-examples. Please let me know if it got better! BTW, you were right: optional seems not optional in Safari, unlike what the spec says. Added a note. |
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Approving, nice work @pepelsbey! Just a couple more small comments.
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| {{EmbedGHLiveSample("dom-examples/media-source-extensions/managed-media-source/", '100%', 420)}} |
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Looking good! Before you merge this, make sure the iframe is tall enough to render the demo nicely, ideally without a vertical scrollbar.
Co-authored-by: Chris Mills <chrisdavidmills@gmail.com>
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Thank you for the review ❤️ |
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Description
New pages
API/BufferedChangeEvent— TheBufferedChangeEventinterfaceAPI/BufferedChangeEvent/BufferedChangeEvent— TheBufferedChangeEvent()constructorAPI/BufferedChangeEvent/addedRanges— TheaddedRangespropertyAPI/BufferedChangeEvent/removedRanges— TheremovedRangespropertyAPI/ManagedMediaSource— TheManagedMediaSourceinterfaceAPI/ManagedMediaSource/ManagedMediaSource— TheManagedMediaSource()constructorAPI/ManagedMediaSource/streaming— ThestreamingpropertyAPI/ManagedMediaSource/startstreaming_event— ThestartstreamingeventAPI/ManagedMediaSource/endstreaming_event— TheendstreamingeventAPI/ManagedSourceBuffer— TheManagedSourceBufferinterfaceAPI/ManagedSourceBuffer/bufferedchange_event— ThebufferedchangeeventUpdated pages
API/Media_Source_Extensions_API— Added new interfaces to the listMotivation
Document new features available since Safari 17.
Additional details
BCD: BufferedChangeEvent
BCD: ManagedMediaSource
BCD: ManagedSourceBuffer
A PR with a demo, merge it first: Add a ManagedMediaSource demo dom-examples#378