目标是以特定的间隔从照相机提取帧并将其保存到某个位置，另一台机子更好，并且可能还允许用户通过按一个按钮来保存帧。
The goal is to extract frames from the camera at particular intervals and save them somewhere, preferably on another machine, and possibly also allow the user to push a button to save frames.
使用Open Directory按钮选择包含以前提取的对象的工作目录。
Use the Open directory button to select the working directory containing the previously extracted objects.
如果是直接从源提取对象，那么在单击extract按钮后要提供必要的信息，以便连接到源。
If you are extracting objects directly from the source, provide the necessary information for connecting to the source after clicking the extract button.
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