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https://developer.mozilla.org/zh-CN/docs/Web/API/SourceBuffer/buffered
SourceBuffer.buffered - Web API | MDN
SourceBuffer 接口的只读属性 buffered 将当前缓冲在 SourceBuffer 内的时间范围作为一个规范的 TimeRanges 对象返回。
web api mdnsourcebufferbuffered
https://developer.mozilla.org/de/docs/Web/API/SourceBuffer/updatestart_event
SourceBuffer: updatestart-Ereignis - Web-APIs | MDN
Das updatestart-Ereignis der SourceBuffer-Schnittstelle signalisiert den Beginn einer appendBuffer()- oder remove()-Operation. Das updating-Attribut wechselt...
ereignis web apissourcebuffermdn
https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/updating
SourceBuffer: updating property - Web APIs | MDN
The updating read-only property of the SourceBuffer interface indicates whether the SourceBuffer is currently being updated — i.e., whether an appendBuffer()...
property web apissourcebufferupdatingmdn