Source filters provide raw multimedia data from a source like a file, a URL, or a live source like a camera.

源筛选器提供来自源的原始多媒体数据，如文件、URL或类似照相机的实时源。

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Describes how to obtain the original, unmodified HTML source, and how to obtain the "live" source that reflects the current state of the DOM.

描述如何获取原始的未修改的html源，以及如何获取反映DOM当前状态的“实时”源。

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Describes how to obtain the original, unmodified HTML source, and how to obtain the "live" source that reflects the current state of the DOM.

描述如何获取原始的未修改的html源，以及如何获取反映DOM当前状态的“实时”源。

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