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How can I copy a video stream with the command line version of VLC for Mac, and simultaneously display the video stream on the screen? I use:

vlc -vvv -I rc mms://... --sout '#duplicate{dst=display,dst=std{dst="output.asf"}}'

The stream is copied to output.asf, but I get no video window. When I try without the "-I rc" option, the copying fails and the last thing appearing in the terminal output is:

macosx interface debug: notification received in VLC with name VLCOSXGUIInit and object VLCEyeTVSupport

"-I macos" (option for displaying a Mac user interface) doesn't work for either.

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