Audio crackle when recording with audio from Apollo x4 Thunderbolt

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adamduro

New Member
I cannot for the life of me figure out what is causing this, and how I would fix. I have seen other similar reports and tried what I've found there, but no luck.

My issue is I am trying to use OBS to record to my local machine. That machine is a 16" Intel MBP running Big Sur. I have the latest version of OBS. My video input is a Logitech Steamcam, and my audio input is an Apollo x4 Thunderbolt interface. I have made sure that all sample rates match, both in OBS and in the Apollo console. I have tried both 44.1 and 48. I have tried running the devices through high end CalDigit powered thunderbolt hubs, as well as plugging them directly into the MacBook.

No matter what, I always get crackling audio in my OBS recordings.

I have tested all of the equipment in other software, such as Ableton, Zoom, Quicktime, etc. No other software has this same audio crackling when recorded.

Attached are the settings I am using for recording, my OBS audio settings, and the advanced settings for the Apollo audio device. I've also attached a log file as well.
 

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adamduro

New Member
Ok, I have made some progress. It appears if I DO NOT use the "mkv" format for recording. If I switch to recording directly into "mov" format, I get no crackling. Does anyone have any idea how I might be able to fix this while also using the mkv format for better re-muxing support down the road? If not, I'll have to stick with using MOV format, which I know has some downsides.
 
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adamduro

New Member
With this new knowledge, I have searched again in the OBS forums and found this thread:

Audio Crackles with Big Sur 11.3.1

I've tried recording on two different Macs, both running Big Sur 11.3.1 and both are recording audio crackles. This is NOT a streaming issue for me (I do local recordings), but the crackling just recently presented itself and none of my other audio capture applications (Zoom, Teams, Webex) seem...
obsproject.com obsproject.com

Posting this for anyone who gets to my thread via the Googles.
 
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