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NDI Multistream audio output?
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Joined: 12/5/2023(UTC) Posts: 13  Location: East Coast Thanks: 2 times
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Curious if I understand this correctly. I'm trying to restructure my audio a bit for my live shows. Currently, we mix all audio down at a our commentator's booth using vMix. So we end up with a single bus of all audio. This works but has a few issues for us. Any adjustments require us to go to the commentator's booth and make those adjustments to audio. Not ideal when in the middle of a show. I think NDI supports multichannel audio and it appears from this post https://forums.vmix.com/...dio-Channel-NDI-selector that vMix can accept multiple audio channel in from NDI. The only question is, can I send multiple audio channel over NDI from a vMix output. The idea is this. We have a production machine in the back room that handles all of the general production tasks (graphics, switching, recording, streaming, etc) We send our cameras in separately as they're mobile and moving around. Our audio has always been a bit of a pain. Ether we're carry a crap ton of cabling or we're doing Dante, which has complications. My priorities are ease of transport and setup and understanding for my crew as due to some other responsibilities I'm not always able to be at these events anymore. In any case: We have 3 inputs at the second vMix machine. This is 3 microphones. 2 Commentators and a third announcer. Currently, we push this audio over vMix call but I'm hoping to move this over to NDI to avoid complications with internet speed or issues. This gives us all the inputs but, as expected, they're mixed down on that machine. At the end of the day I'm also hoping to use Central control to build out a cough/mute, talkback button so multiple channels are becoming necessary. Any other ideas for getting audio from far away into vMix so it can be mixed at our production desk are welcome as well. So far this hasn't worked out badly, it's just time for some improvements.
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Rank: Advanced Member
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Joined: 12/24/2021(UTC) Posts: 507  Location: athens Thanks: 123 times
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Hello. NDI outputs 1-4 from vmix carry the audio channels we select at the cog button-->Audio Channels of any of the outputs. So if for example you enable in the output 2-->Audio Channels-->MABCDEFG then the received ndi feed in the other machine will have the master and buses channels so it will 16channels audio over 1 ndi feed
The problem here?
Un-fortunatelly we cannot combine audio buses other than MA,MAB,MABC,FG and this is somehow fustrating
The other workaround is to open the additional ndi outputs and this will appear in your LAN all the audio buses and audio inputs one by one. So in this scenario,you have to receive in the commentator vmix or obs the buses/audio inputs you need as separate ndi inputs and combine them there and commentator will hear his combined master output or what he need
Or something else im thinking. You can send all audio buses in the other vmix in the commentator and then to the received ndi input,go to audio matrix and choose what you need to hear or not
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Rank: Member
Groups: Registered
Joined: 12/5/2023(UTC) Posts: 13 Location: East Coast Thanks: 2 times
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Originally Posted by: nikosman88  Hello. NDI outputs 1-4 from vmix carry the audio channels we select at the cog button-->Audio Channels of any of the outputs. So if for example you enable in the output 2-->Audio Channels-->MABCDEFG then the received ndi feed in the other machine will have the master and buses channels so it will 16channels audio over 1 ndi feed
The problem here?
Un-fortunatelly we cannot combine audio buses other than MA,MAB,MABC,FG and this is somehow fustrating
The other workaround is to open the additional ndi outputs and this will appear in your LAN all the audio buses and audio inputs one by one. So in this scenario,you have to receive in the commentator vmix or obs the buses/audio inputs you need as separate ndi inputs and combine them there and commentator will hear his combined master output or what he need I think I might've found a "solution" here. I found in the settings>Output tab "Additional NDI Output" Which allows me to push audio inputs to NDI. It apperas that each audio input I add to vMix gets pushed to NDI, which is pretty much perfect in my case because I need all control and mixing back at production. So this might work after all
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Rank: Advanced Member
Groups: Registered
Joined: 12/24/2021(UTC) Posts: 507 Location: athens Thanks: 123 times
Was thanked: 71 time(s) in 67 post(s)
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Originally Posted by: neato23 Originally Posted by: nikosman88 Hello. NDI outputs 1-4 from vmix carry the audio channels we select at the cog button-->Audio Channels of any of the outputs. So if for example you enable in the output 2-->Audio Channels-->MABCDEFG then the received ndi feed in the other machine will have the master and buses channels so it will 16channels audio over 1 ndi feed
The problem here?
Un-fortunatelly we cannot combine audio buses other than MA,MAB,MABC,FG and this is somehow fustrating
The other workaround is to open the additional ndi outputs and this will appear in your LAN all the audio buses and audio inputs one by one. So in this scenario,you have to receive in the commentator vmix or obs the buses/audio inputs you need as separate ndi inputs and combine them there and commentator will hear his combined master output or what he need I think I might've found a "solution" here. I found in the settings>Output tab "Additional NDI Output" Which allows me to push audio inputs to NDI. It apperas that each audio input I add to vMix gets pushed to NDI, which is pretty much perfect in my case because I need all control and mixing back at production. So this might work after all Exactly
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Rank: Member
Groups: Registered
Joined: 12/5/2023(UTC) Posts: 13 Location: East Coast Thanks: 2 times
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Well... that was easy.... Just has never seen that before... I guess I wasn't looking
Now to get central control to do what I need it to do. Cough, mic on/off, and talkback
I've got Mic On/Off working well enough.
cough is meh. The feedback is kind of the issue. It's not displaying lights that really make sense.
Talkback is a toggle instead of a push and hold. There is no temp button that'll take them out of the master audio bus and put them back on release.
Guess I'll keep playing with this.
Thanks for the guidance!
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Rank: Advanced Member
Groups: Registered
Joined: 12/24/2021(UTC) Posts: 507 Location: athens Thanks: 123 times
Was thanked: 71 time(s) in 67 post(s)
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Originally Posted by: neato23 Well... that was easy.... Just has never seen that before... I guess I wasn't looking
Now to get central control to do what I need it to do. Cough, mic on/off, and talkback
I've got Mic On/Off working well enough.
cough is meh. The feedback is kind of the issue. It's not displaying lights that really make sense.
Talkback is a toggle instead of a push and hold. There is no temp button that'll take them out of the master audio bus and put them back on release.
Guess I'll keep playing with this.
Thanks for the guidance! There exist 3 shortcuts busxsendtomaster https://vmixapi.com/?function=BusXSendToMaster and on/off https://vmixapi.com/?function=BusXSendToMasterOnmaybe somehow helps what you need to do and also a vmix tutorial for talkback that also may offer some ideas on what you need to do
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