Static developing on audio when screen recording with Quicktime

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Level 1

4 points

Static developing on audio when screen recording with Quicktime

Hi Guys,

I am using a MacBook Pro 15", late 2013 model. 2.3 GHz Intel Core i7, 16 GB 1600 MHz DDR3, NVIDIA GeForce GT 750M 2048 MB. I am running on El Capitan. I am using Quicktime to capture Screen Recordings with audio using the built in mic. Initially the audio starts off fine but if the recording is long, I've noticed that after 10 mins or so static starts developing on the audio, which gets worse as the recording goes on. Nothing changes in the environment that I am recording in to explain why this would be happening.

Any ideas?

MacBook Pro with Retina display, OS X El Capitan (10.11.1)

Posted on Nov 12, 2015 1:56 AM

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Answer 1

brenden dv

Community Specialist

Nov 13, 2015 12:41 PM in response to tetmikem

Hi tetmikem,

Welcome to the Apple Support Communities! That certainly is an odd issue you are describing. I'm sure we can help you figure out what is going on, or at least get you pointed in the right direction, but we may need to isolate the issue down a bit. Any additional info you can provide would be helpful:

1. Does the issue happen regardless of what you are recording? For example, if you were to restart your machine with nothing else running, then just record the desktop with ambient sound, does the issue occur?

2. Similarly, does the issue occur in a new test user?

3. Do you notice any change in system resource usage when the issue starts (increased memory pressure, increased disk or network activity, etc)?

4. If you have them available (or something similar), you may want to test with a set of Apple Earphones with Mic to see if the issue is isolated to the internal built-in mic, or is happening with other audio inputs as well:

How to use Apple Earphones with Remote and Mic with your Mac - Apple Support

Thanks

Reply

Answer 2

brenden dv

Community Specialist

Nov 13, 2015 12:42 PM in response to tetmikem

Hi tetmikem,

Welcome to the Apple Support Communities! That certainly is an odd issue you are describing. I'm sure we can help you figure out what is going on, or at least get you pointed in the right direction, but we may need to isolate the issue down a bit. Any additional info you can provide would be helpful:

1. Does the issue happen regardless of what you are recording? For example, if you were to restart your machine with nothing else running, then just record the desktop with ambient sound, does the issue occur?

2. Similarly, does the issue occur in a new test user?

3. Do you notice any change in system resource usage when the issue starts (increased memory pressure, increased disk or network activity, etc)?

4. If you have them available (or something similar), you may want to test with a set of Apple Earphones with Mic to see if the issue is isolated to the internal built-in mic, or is happening with other audio inputs as well:

How to use Apple Earphones with Remote and Mic with your Mac - Apple Support

Thanks

Reply

Answer 3

Jun 28, 2017 12:12 PM in response to tetmikem

Its your system fan running in the background 😁.... i just had this problem and its taken me about 3 days to figure it out lol.

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