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VTDecoderXPCService sucking up 25-30% of CPU

Anyone else seeing this in your Activity Monitor?


VTDecoderXPCService is running a full 25-30% of my CPU's on quadcore i7 iMac with 8GB RAM.


I have no apps running, yet the service is running like crazy..... any solutions?

Posted on Jul 20, 2011 9:30 PM

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Posted on May 31, 2014 12:34 PM

VTDecoderXPCService, WindowServer, and kernel_task together total are about 70% of a CPU. Furthermore Safari is very sluggish when this happens.


Only Finder, Activity Monitor, FaceTime and Safari are open.


Quit FaceTime, and the problem goes away. Relaunch FaceTime and the problem resumes.

37 replies

Jul 24, 2015 5:57 AM in response to Doug Stringham

I experienced intermittent choppiness in QuickTime playback because of VTDecoderXPCService sucking up to 120% (multi-thread) CPU time.

As far as I understand, the service is not required for video playback in QuickTime, as oftentimes the videos would play fine while VTDecoderXPCService was not running.


I was able to fix the issue by moving VTDecoderXPCService.xpc package out of its system folder and restarting:


sudo mv /System/Library/Frameworks/VideoToolbox.framework/Versions/A/XPCServices/VTDecoderXPCService.xpc ~/
sudo shutdown -r now


--Niko

Aug 22, 2015 3:20 PM in response to aawills

This is what's happening to me too but it occurs at random times with 1-3 of the same commercials playing at the same time. I only had google search open in Firefox so I opened Activity Monitor and checked all of the program s that were running. In Activity Monitor, Firefox had a drop-down arrow so I clicked on in and it showed an item that had something to do with shock-wave. I force quit the item and the sound sent away. The other line item showing is: VTDecoderXPCService .


I am baffled as to what is going on. Any assistance would be appreciated.

Dec 3, 2015 5:12 AM in response to Doug Stringham

I also had this issue, with up to 28% of cpu being sucked up by VTDecoderXPCService. I shut down possible problem applications one by one: Chrome, Thunderbird, iTunes, etc. with no change. Then I remembered that Full Deck Solitaire had a video background and changed it to wallpaper, and voila, VTDecoderXPCService shut down and did not come back. It also fixed some of the issues I was having with speed, so I think the hit of ~30% of the cpu was making speed issues apparent. (spinning balls, spinning circles, etc.) Even filling in the Open With program list was sometimes taking 8-10 seconds or more when clicking on a TXT file! I have not checked if this helped that issue yet.


Based on this, you might check anything that may have a video loaded/running, even in the background. With the ubiquitous videos on all web pages anymore, this might be an issue where I go back to the DOS days and Quit the browser unless I am going to use it. Caveat: I have not checked in depth to see if having the browser open brings back VTDecoderXPCService, but a quick check does not seem to be a problem.


This is on a mid 2010 MBP with 2.66 GHz i7 dual core and 8 GB ram running 10.10.5 Yosemite.


Hope it helps.

Feb 12, 2016 5:38 AM in response to Asantee

Same Problem solved: 30% CPU because of opening this url: http://eyeem.com/ - by closing tabs of not yet visited websites first it turn out that it was that one. no idea what is running on that page behind the curtain.


bravely running, easily breathing and never crashing soul called "the machine": macbook pro 15" early 2009 - OSX 10.10 yosemite - little tuning

Apr 2, 2016 7:09 AM in response to Doug Stringham

I was able to simply Quit the VTDecoderXPCService from the Activity Monitor screen (seeing as it was the largest user of CPU time by far, it had to be my problem...) - the process instantly restarted, but was running as expected, and not sucking all my CPU processing time. This had no ill side-effects on websites, or Quicktime video applications that were running. I suggest just quitting this service when the CPU slows, it seems to be a simple solution, that doesn't involve stopping your work wherever you may be. 🙂

Apr 15, 2016 1:34 PM in response to Doug Stringham

I was having a similar problem and my Macbook became insanely slow (i7 2.2Ghz with 16GB RAM). After looking around I found that

I had a web page opened to the Flixel.com site which has a huge gallery of motion .jpgs similar to Apple's iPhone picture taking app.

By shutting the page down the laptop literally sprang back to life after consuming 620% of CPU. Hope this helps.

VTDecoderXPCService sucking up 25-30% of CPU

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