Become a MacRumors Supporter for $25/year with no ads, private forums, and more!


macrumors newbie
Original poster
Sep 29, 2006
Sydney, Australia
Hey there Mac Gurus,
I have a Mac Book Pro running Catalina. I have Quicktime 10.5 installed.
I successfully recorded several videos using Quicktime Screen Recorder & the recording included the audio that came with the videos & NO additional background sound (eg noises in the room at the time, captured using the Mac microphone). The video's audio was captured EVEN when I turned the sound setting to ZERO & heard nothing coming from my Mac, in the real time playing of video that I was screen recording at that time.
PERFECT! exactly what I wanted, except now it has completely stopped working! and I didn't change a thing :(
In Quicktime, I was using 'System Audio Recorder Option' under the window: Option --> Microphone, in the Pop Up box after you select 'New Screen Recording'
I have tried restarting program, rebooting Mac & selecting another Microphone setting, then going BACK to 'System Audio Recorder' (NOTE: Option --> Microphone --> 'Built in Microphone' works, but the video's audio sound TERRIBLE this way & you can hear any noise in the room recorded as well - v. difficult with Kids about too!)
I have gone into System Preferences --> Sound..... no big surprises there. Only option I have for Sound - Input Tab is 'Internal Microphone' (Type: Built In) which is selected (Mute is NOT selected on OutPut Volume). Under Sound Output Tab there are 2 options; I have 'Internal Speakers (Type: Built In) selected, although there is another option for My Apple TV (Type: Airplay)
I have tried Googling, but can only find answers for OLD audio problems, using old Quicktime versions.
I even tried to find a site where I can re-download Quicktime 10.5 in case something just got bugged-out somehow, but can't even find anywhere to freshly download this version of Quicktime.

Here's a few photos that might make my explanation a bit clearer

Can anyone relate? or know what's going on?

Hopefully Yours,


  • IMG_0667.JPG
    614.3 KB · Views: 223
  • IMG_0668.JPG
    591.9 KB · Views: 94


macrumors 68030
Sep 13, 2002
Bristol, UK
Quicktime does not capture computer audio. I think you may have just been lucky using the microphone. There are ways round this by installing utilities. I used to use Soundflower to do this, but it looks like development has been picked up by the original author.

This guide may help you.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.