English
资源说明：AV Foundation is one of several frameworks that you can use to play and create time-based audiovisual media.
It provides an Objective-C interface you use to work on a detailed level with time-based audiovisual data. For
example, you can use it to examine, create, edit, or reencode media files. You can also get input streams from
devices and manipulate video during realtime capture and playback.
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