I use embedded-audio = true, which works fine with my decklink card.
I want to plays sound only embedded on my decklink card, because I use system sound in another app for another thing.
How can I disable the system sound while playing a video ?
Is there a way to to this in the config file ?
Sure, just get rid of the <system-audio> node inside you casparcg.config file. It either starts with <system-audio> and ends with </system-audio> or its only one line reading <system-audio /> In either case remove everything on this or these lines and all be well.