The VideoLAN Forums

VCL can not do this. The issue is known and was closed as "worksforme" https://trac.videolan.org/vlc/ticket/10009 If you select passthrough for video AND for audio is silently removes all audio tracks from your streams. So you can not use this to repair a broken container or chance e.g. fr...

If someone where to borrow a Blackmagic Ultrastudio Mini Monitor to one of the 2 mac developers (or offer to test and fix it in exchange for some help on finding his way around the VLC source code and build system),
would that offer be accepted?

Is there a libdecklinkoutput_plugin for MacOS already or is it still Windows+Linux only?
I tried 2.2.0-RC2 and the latest daily and can't find the plugin in the list of video output plugins to choose from.