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Streaming to multiple destinations with different audio
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madido  
#1 Posted : Thursday, April 28, 2016 10:35:30 AM(UTC)
madido

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Hello,
I'm about to work on a conference with translation ( 2 languages) and they ask me to stream to 2 different CDN each with a language.
Is it possible to do it with a single machine or I have to use 2 separate PC?
I know I can stream to 2 different CDN with VMix, but I don't know how to have different audio mix in the streams...

Thank you

Stefano
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Mathijs  
#2 Posted : Thursday, April 28, 2016 7:54:02 PM(UTC)
Mathijs

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You need a separate pc for that.
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indiffy  
#3 Posted : Sunday, May 1, 2016 11:14:05 AM(UTC)
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I think you can use vMix for one stream and something like FMLE or OBS to grab the output from vMix and choose a different audio source.
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Speegs  
#4 Posted : Monday, May 2, 2016 2:43:24 AM(UTC)
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Nothing wrong with using two machines (most likely the most flexible as you can use the machine for something else when not streaming), but if you didn't want the hassle or FMLE or OBS on the same machine.

You could also take the HDMI out and use a H.264 Encoder that has a separate audio source option (IE usually an Analogue In so you can take your other language from an audio mixer).

Many available encoders are available at difference prices and build quality from Teradek, Digicast, Videoaccess and I'm sure many others I have not mentioned and I don't yet now about.
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Mathijs  
#5 Posted : Monday, May 2, 2016 11:54:25 AM(UTC)
Mathijs

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If you run other software like FMLE or OBS on the same machine you run vMix on, don't rely on the cpu usage vMix tells you. Use the windows monitor to look at the cpu usage to decide if this is going to work or not. Also because vMix uses ffmpeg for the streaming, the CPU usage of the stream is not reflected on the vMix cpu meter.
Maybe it might be better to show real cpu usage within vMix, even multiplying it by 2 when there is a HT capable processor in the system to keep the info more reliable.
I don't know if there are any limitations on what is possible of course, as I'm not a experienced coder.
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