Setup for including commentators in live stream (including monitoring) I'm currently planning a live stream setup which has to include two commentators. This is a bit of a make shift / low budget production. Our setup will be


Panasonic Mixer with 4 SD Inputs to pre-mix four cameras. The PGM will go into  
Blackmagic TV Studio, for additional 2 Cameras + Titles


The resulting PGM will go into the encoder to be streamed.  

Now those commentators need to hear the program audio, but not themselves. My first idea was to plug a de-embedder into the PGM output of the TV Studio, feed this audio to the commentators AND into an audio mixer to include the two microphones. The resulting audio will got to the encoder. But I'm pretty sure this will cause a delay through the mixers latency and audio will be out of sync, right?

What is the best way to include the commentators AND get the "clean" audio for them? Remember the BM TV Studio has NO audio output. Only an audio input where I could feed the mics. But then I have no "clean" sound ...    

Can anyone offer advice?     

Thanks!
thomas
When I first started doing this, I always thought it was better to give them "clean" audio as well. I've since figured out that they want to hear themselves. Also they want to hear each other, so really you do not want a separate feed for them.

Depending on what you are broadcasting, you may not even need the sound from the event.

The only issue you're going to run in with a delay in the video to them commentating is if they are only using the video feed to do it, not the live event going on right there.