It´s a aggregated output i need - en soundcard with 4 out and 1 blackmagic hdmi to SDI converter with 8 out. I will look into Blackhole option - Thanks
Isadora 3.2.6 ARM, Mac M2 Max, MacOS Sonoma 14.2.1
Opening an Isadora 2 file from 2014 and replacing missing media will cause the project to open completely blank.
Workaround:
Clicking "skip all files" will open the project successfully. Replacing missing media afterward in the converted Isadora 3 file causes no problems.
Check out this thread: https://community.troikatronix.com/topic/6752/sound-routing-software
Also, if I understand correctly, what you want is a multi-output device, not an aggregate audio device.
i get good results using Blackhole on Mac OS. It's a bit fiddly to get it installed, but you can set up Aggregate and Multi-output settings in AudioMidi Setup prefs.
Once this is done, Isadora will see these as outputs and you can send separate signals from each movie or audio player.
Other people can give better tech. advice than me, but this is my experience.
The link below also offers a Windows-based alternative, which I haven't tried:
How do i send audio to multi outputs at once ? seems that aggregate device dont send out to mere then 2 channels.
Any ideas ?
@dillthekraut Thank a lot ! That would have been what I would have done (more or less) but I was in a production so I didn't have time and resources to test it in that way. I'll definitely look into it and report it here as soon as I can. Interesting case
@mark_m Ahah same thing happening to me ! As I'm trying to push more and more of our live events over to Isadora (We mostly use Watchout and/or Disguise on larger productions) but for most corporate gigs, of all sizes, I would say 95% of them would be abundantly well-served with Isadora. But the last standing blockade is always the redundancy. Now @Woland created this ingenious way for me to solidly implement Isadora as a totally viable, relevant solution throughout our operations.
I just want to say what valuable and important work this is: I recently lost an Isadora vs Disguise argument on a production, on the very basis that Isadora didn't have a built-in automatic fallover the way that Disguise systems do. I would rather program in Isadora than Disguise, and if I can demonstrate this kind of redundancy I wouldn't lost these arguments again 
@bonami said:
I'm navigating your patch at the moment.
My pleasure, and thank you for prompting me to make it. I hope it will be helpful to you and others. Let me know if you have any questions as I'd be happy to answer them. I also hope I'll be able to find the time to finish the file soon...
Oh my god Woland ! Ahah this is absolutely above my expectations ! Your first answer was already very clever, I was not expecting such a detailed Izz file on top of it ! I'm navigating your patch at the moment. I had, in the meantime, created something along those lines after your reply, but nowhere near as automatic, complete, and conceptually mature as the file you provided. I'm glad I can learn from your reflexions throughout your patch. Thanks again, really.