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Title: SourceBuffer - Web APIs | MDN

Open Graph Title: SourceBuffer - Web APIs | MDN

Description: The SourceBuffer interface represents a chunk of media to be passed into an HTMLMediaElement and played, via a MediaSource object. This can be made up of one or several media segments.

Open Graph Description: The SourceBuffer interface represents a chunk of media to be passed into an HTMLMediaElement and played, via a MediaSource object. This can be made up of one or several media segments.

Opengraph URL: https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer

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Domain: developer.mozilla.org

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Links:

Skip to main contenthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#content
Skip to searchhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#search
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Web APIshttps://developer.mozilla.org/en-US/docs/Web/API
SourceBufferhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer
https://github.com/orgs/mdn/discussions/739
https://developer.mozilla.org/de/docs/Web/API/SourceBuffer
https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer
https://developer.mozilla.org/ja/docs/Web/API/SourceBuffer
https://developer.mozilla.org/zh-CN/docs/Web/API/SourceBuffer
Tell us why.https://github.com/web-platform-dx/developer-signals/issues/33
Learn more https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility
See full compatibility https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#browser_compatibility
Dedicated Web Workershttps://developer.mozilla.org/en-US/docs/Web/API/DedicatedWorkerGlobalScope
HTMLMediaElementhttps://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement
MediaSourcehttps://developer.mozilla.org/en-US/docs/Web/API/MediaSource
EventTarget https://developer.mozilla.org/en-US/docs/Web/API/EventTarget
SourceBuffer https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer
Instance propertieshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#instance_properties
Instance methodshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#instance_methods
Eventshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#events
Exampleshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#examples
Specificationshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#specifications
Browser compatibilityhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#browser_compatibility
See alsohttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#see_also
Instance propertieshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#instance_properties
SourceBuffer.appendWindowEndhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendWindowEnd
SourceBuffer.appendWindowStarthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendWindowStart
append windowhttps://w3c.github.io/media-source/#append-window
SourceBuffer.audioTrackshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/audioTracks
SourceBuffer.bufferedhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/buffered
SourceBuffer.modehttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/mode
SourceBuffer.textTrackshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/textTracks
SourceBuffer.timestampOffsethttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/timestampOffset
SourceBuffer.updatinghttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
remove()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
SourceBuffer.videoTrackshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/videoTracks
Instance methodshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#instance_methods
EventTargethttps://developer.mozilla.org/en-US/docs/Web/API/EventTarget
SourceBuffer.abort()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
SourceBuffer.appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
ArrayBufferhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
TypedArrayhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
DataViewhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView
SourceBuffer.appendBufferAsync()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBufferAsync
Promisehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
SourceBuffer.changeType()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/changeType
MIME typehttps://developer.mozilla.org/en-US/docs/Glossary/MIME_type
appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
SourceBuffer.remove()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
SourceBuffer.removeAsync()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/removeAsync
Promisehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
Eventshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#events
aborthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort_event
SourceBuffer.abort()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
MediaSource.removeSourceBuffer()https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/removeSourceBuffer
SourceBuffer.appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
SourceBuffer.updatinghttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
errorhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/error_event
appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
SourceBuffer.updatinghttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
updatehttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/update_event
SourceBuffer.appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
SourceBuffer.remove()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
SourceBuffer.updatinghttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
updateendhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updateend_event
appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
remove()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
updatestarthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updatestart_event
appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
remove()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
updatinghttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
Exampleshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#examples
Loading a video chunk by chunkhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#loading_a_video_chunk_by_chunk
https://github.com/mdn/dom-examples/tree/main/sourcebufferhttps://github.com/mdn/dom-examples/tree/main/sourcebuffer
https://mdn.github.io/dom-examples/sourcebuffer/https://mdn.github.io/dom-examples/sourcebuffer/
Specificationshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#specifications
Media Source Extensions™# sourcebufferhttps://w3c.github.io/media-source/#sourcebuffer
Browser compatibilityhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#browser_compatibility
See alsohttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer#see_also
MediaSourcehttps://developer.mozilla.org/en-US/docs/Web/API/MediaSource
SourceBufferListhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBufferList
Learn how to contributehttps://developer.mozilla.org/en-US/docs/MDN/Community/Getting_started
MDN contributorshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/contributors.txt
View this page on GitHubhttps://github.com/mdn/content/blob/main/files/en-us/web/api/sourcebuffer/index.md?plain=1
Report a problem with this contenthttps://github.com/mdn/content/issues/new?template=page-report.yml&mdn-url=https%3A%2F%2Fdeveloper.mozilla.org%2Fen-US%2Fdocs%2FWeb%2FAPI%2FSourceBuffer&metadata=%3C%21--+Do+not+make+changes+below+this+line+--%3E%0A%3Cdetails%3E%0A%3Csummary%3EPage+report+details%3C%2Fsummary%3E%0A%0A*+Folder%3A+%60en-us%2Fweb%2Fapi%2Fsourcebuffer%60%0A*+MDN+URL%3A+https%3A%2F%2Fdeveloper.mozilla.org%2Fen-US%2Fdocs%2FWeb%2FAPI%2FSourceBuffer%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-us%2Fweb%2Fapi%2Fsourcebuffer%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fcommit%2Fa4fcf79b60471db6f148fa4ba36f2cdeafbbeb70%0A*+Document+last+modified%3A+2025-10-30T21%3A49%3A49.000Z%0A%0A%3C%2Fdetails%3E
Media Source APIhttps://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API
SourceBufferhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer
appendWindowEndhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendWindowEnd
appendWindowStarthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendWindowStart
audioTrackshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/audioTracks
bufferedhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/buffered
modehttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/mode
textTrackshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/textTracks
timestampOffsethttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/timestampOffset
updatinghttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
videoTrackshttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/videoTracks
abort()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
appendBuffer()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
appendBufferAsync()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBufferAsync
changeType()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/changeType
remove()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
removeAsync()https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/removeAsync
aborthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort_event
errorhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/error_event
updatehttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/update_event
updateendhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updateend_event
updatestarthttps://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updatestart_event
EventTargethttps://developer.mozilla.org/en-US/docs/Web/API/EventTarget
AudioTrack.sourceBufferhttps://developer.mozilla.org/en-US/docs/Web/API/AudioTrack/sourceBuffer
HTMLMediaElement.bufferedhttps://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/buffered
HTMLMediaElement.seekablehttps://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/seekable
HTMLMediaElement.srcObjecthttps://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/srcObject
HTMLVideoElement.getVideoPlaybackQuality()https://developer.mozilla.org/en-US/docs/Web/API/HTMLVideoElement/getVideoPlaybackQuality
MediaSourcehttps://developer.mozilla.org/en-US/docs/Web/API/MediaSource
MediaSourceHandlehttps://developer.mozilla.org/en-US/docs/Web/API/MediaSourceHandle
SourceBufferListhttps://developer.mozilla.org/en-US/docs/Web/API/SourceBufferList
TextTrack.sourceBufferhttps://developer.mozilla.org/en-US/docs/Web/API/TextTrack/sourceBuffer
VideoPlaybackQualityhttps://developer.mozilla.org/en-US/docs/Web/API/VideoPlaybackQuality
VideoTrack.sourceBufferhttps://developer.mozilla.org/en-US/docs/Web/API/VideoTrack/sourceBuffer
Transcoding assets for Media Source Extensionshttps://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API/Transcoding_assets_for_MSE
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