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Producer speaking to talent behind the scenes.
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Joined: 6/4/2021(UTC) Posts: 1 
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Howdy there,
I run a broadcast for a company that uses 3-5 talent, 1 producer, and broadcaster (myself). In the show, we will sometimes have talent talk for a bit too long and we would like a way to communicate with the host to tell them to move to the next segment.
My question is this; how can we have the producer be able to talk to the host so that it doesn't come through the Master Bus? Please note that, as the person broadcasting, I'm not the producer but I will need to be able to hear when the producer talks. I know there's a solution to this somewhere out there but I just can't quite figure it out. I've watched numerous amounts of videos that have the broadcaster/producer as the same person, but in this case, we are two different people in different locations.
I would also love to have this as a button push on my StreamDeck.
Thanks so much for your help!
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Rank: Advanced Member
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Joined: 8/21/2019(UTC) Posts: 67  Thanks: 7 times
Was thanked: 3 time(s) in 3 post(s)
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Doing this in Vmix uses up a lot of audio busses, unfortunately.
You can designate a bus to a microphone and then uncheck sending that bus to master, that will stop talkback from going to master.
Then the problem is you need ANOTHER bus to use as return audio to talent, that is not the master (because talkback is not there) but includes the busses or sources the talent is supposed to hear, PLUS the talkback.
Depending on how many people need to use talkback, you can need even more busses, especially if you want people using talkback to not hear their own voices over talkback.
If you're currently just dumping all your sources on the Master bus and not using the others for anything, then this could work for you-- turn on all the busses, A through G, and use as many as you need for talkback.
This also means, though, that for each person listening, you need a way of changing the bus they are hearing from Master to your special return bus.
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Rank: Advanced Member
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Joined: 12/19/2020(UTC) Posts: 56  Location: London Thanks: 2 times
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I'm confused by the chap above, so I may have misunderstood something here, but the following should work?
Audio from callers goes to Master bus.
Audio from callers goes to bus A
Audio source TO callers is bus A.
Add a mic. Send audio to bus A and NOT Master. Either use a device that is a push to talk mic/has a manual mute button on it, or toggle the device off/on in vMix (you can use a shortcut or a streamdeck for this).
For you to hear everything, send all your audio from VTs etc to bus A as well as master, then 'solo' bus A, that way you hear all audio on that, including the producers talking. If you ever want to stop hearing the producers and focus on the broadcast, just un-solo bus A, and you'll have just broadcast audio.
vMix will automatically mix-minus the callers on the Bus, so despite the fact their audio goes to A and they're being sent bus A, they will not hear themselves back. This logic is proved by when you send callers to Master and send Master back, they don't hear themselves. That applies across all buses too.
No need for more buses than that.
For your producer to be sat elsewhere (presumably in the same room), you can go to Settings > Audio Outputs and permanently send audio (such as master) to a different audio output (i.e. a headset). In a different location entirely would be more tricky, but I'm sure you can find a way just for them to hear broadcast!
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Rank: Advanced Member
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Joined: 8/21/2019(UTC) Posts: 67 Thanks: 7 times
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That is what I would have expected, but from what I can see, Vmix only performs mix minus on the master bus.
If you put a performer on a bus and then return them that same bus, I believe they will hear themselves. It appears to function that way for me.
By "caller" I think you're assuming the use of Vmix Call but the OP didn't mention it, so I did not address that.
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Rank: Advanced Member
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Joined: 12/19/2020(UTC) Posts: 56 Location: London Thanks: 2 times
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Originally Posted by: Narcogen 
By "caller" I think you're assuming the use of Vmix Call but the OP didn't mention it, so I did not address that.
Ha, I did the opposite - because he didn't mention it, I instantly assumed vMix call! The performer on a bus (using vMix call) and sending them that same bus back should be mix-minus'ing for you though as far as I'm aware!
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Rank: Advanced Member
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Joined: 8/21/2019(UTC) Posts: 67 Thanks: 7 times
Was thanked: 3 time(s) in 3 post(s)
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UPDATE at the bottom, as what I've written below is incorrect.
I can say from my personal experience with vmix call, this does not work. Mix minus only functions when the return audio source for the call is master.
If you define another bus for return and that bus includes the performer, mix minus is not performed.
If I'm just doing something wrong I'm open to being shown how to do it correctly, but for this reason I actually use external apps for talkback when I have more than one vmix caller.
For instance, if I have three callers and I put them all on Bus A, and I return them the Master track, they get all performers except themselves.
If I select the return audio track as the A bus, they all hear everyone including themselves.
Perhaps I'm doing something wrong, or perhaps there was an issue when I first started using Vmix Call that has since been fixed and I don't know about it.
UPDATE:
Either I was doing something wrong before, but this works as you describe and as expected now, so I retract my description.
The only way you need extra busses for return is when using other systems (say, NDI over a LAN, which we also use) that doesn't include a mix minus feature.
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Rank: Advanced Member
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Joined: 11/20/2020(UTC) Posts: 74  Thanks: 13 times
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I would recommend zu activate at least 4 audio busses in "settings", "audio outputs"
set them to "enabled"
then define the busses purpose
(example)
M - Output to Stream/Recording
A - Talk Back Bus between Operator and Caller
B - Com Bus Moderator/Talent
C - Com Bus Caller to caller
and then you will have to be able to control it quickly
without clicking on/off all busses for all participants (you might go crazy trying that...)
1. Use shortcuts
Mod-Tal Com
Audio bus on B
Audio Bus Off M
Solo On Mod/Tal
Or (my recommendation) use scripting, looks roughly like:
Com Mod/Tal
api.function("AudioBusOn", input:= number of Mod, value:= "b")
api.function("AudioBusOn", input:= number of Tal1, value:= "b")
aso
api.function("VideoCallAudioSource", input:= mod, value:= "BusB")
aso
api.function("SoloOn", input:= mod)
api.function("SoloOn", input:= tal)
aso, aso
one script for each situation and then the corresponding shortcut will get
the function "ScriptStart", Value= (exact!) name of script
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 1 user thanked Chris Daum for this useful post.
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