Audio echo with 30s delay

[AlexVsEvil]

Hello,

First of all, thank you for your attention.
Today we were trying a new setup with two mics and while both of them were activated we had 30s of delay on one of them and the other was fine. This issue was just happening live and not while recording.

The setup is:
Alienware 17 R5
One ElGato 60s connected to a Sony A6600 with an Rode go Wireless mic connected to a lavalier (this one was fine)
One Camlink connected to a sony a7iii with a Rode shutgun mic (the one that f up)
(I know we should have proper audio gear but we were testing a concept taht failed misarably due to my incompetence)

When you listen to the VoD you can hear in the delayed audio the shotgun audio (our warm up screams and the going live cue) even before we ever switched to a scene with it.

I've included cuts from the live stream and the logs

- YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

youtu.be

In this cut you can see that the issue started when the scene changed, the audio is from before that (mic + intro song is heard wich is weird since the mic isnt capturing the intro nor the mic should be capturing 30s befora a scene with it)

The first cut is when I mutted the shotgun mic (sony) and the second when I mutted the lavalier (sony2)
(the VLC here is the background music)

We will be using an audio interface for future streams, will it solve the issue for sure?

Thanks again for your attention
Alex

 

[AlexVsEvil]

Happy anniversary, topic

 

[konsolenritter]

Your samplerates of devices differ. Pls set all (and obs) to 48k and see if that works.

If not: Your Camlink (Sony 2) builds up huge audio buffer even from start. Try a dedicated sound device instead.

Then: Never, NEVER route the same audio content (your voice) on different paths thru different technology and device into the same target system. Even if you would balance as good as you can (and get rid of the big 30s delay) - ever, EVER lag and delay in small amounts will persist and annoy (if you catch up to just milliseconds, you will at least earn nasty hearable comb-filtering instead of hearable echo). So use near mic'ing XOR (exclusive or) gunshot mic. Never ever together..., to say so.
(BTW: Rode Wireless is a wlan based tech that creates lag already!)

If strongly need different mics in the room (for whatever reason), go by cable or professionel wireless systems, mix them equally timed thru a mixing board, then go with the well mixed sum thru one device into obs.

 

[Harold]

30s delay implies that the stream is being watched on a system or device that is being captured by the audio chain. Mute that stream view or otherwise make sure it's not in the chain.