We stream in-person lectures to at home attendees.  All technology including mics and the laptop go through a system that projects into the room and to the audience at home (through Zoom).  When our lecture speaker includes videos in the PowerPoint presentation, a few issues happen with the volume.  Attendees on Zoom are only able to hear choppy/underwater sound clips (it's like a mix of the speaker talking and the video--just jumbled noise).  Also, attendees are saying after the videos are played, the speakers volume gets really low for a minute then comes back to normal.  How can we 1. Have a video play with the volume from both the video and speaker audible, and 2. Regulate the volume levels so the speaker's mic doesn't dip after videos are played.  Thanks! 

I'm trying to use the incoming livestream feature on a webinar and I'm trying to stream from a Blackmagic ATEM Mini Pro ISO. I copied the server URL and stream key from my webinar session into the ATEM Control Software and hit "On Air" to begin streaming, but the incoming livestream popup on Zoom shows "No data" where the stream should be.

I updated both the ATEM software (10.0) and the Zoom Workplace app (6.6.0) to their most recent versions.

I tried streaming from OBS to the same webinar session to see if Zoom wasn't accepting the incoming stream for some reason, and streaming from OBS worked. I also tried streaming from my ATEM to YouTube and Facebook to see if the ATEM wasn't sending a stream, but that worked as well. So the ATEM seems to be able to send a stream and Zoom seems to be able to receive one, but I can't get the two to work together.

Ideally I would love to be able to stream into the webinar instead of connecting the ATEM as a webcam via USB because the ATEM only has one USB output and I would like to use it to record ISO feeds and cut decisions to an SSD instead.