FaceTime HD camera not turning on
I am using a 15-inch Mid 2012 Macbook Pro with 2.7 GHz i7, 16GB of RAM, and 1TB HD with Intel HD Graphics 4000 running OSX 10.11.4. For the past few months, my built in FaceTime HD camera has not been turning on when it should be, particularly during attempted uses with Skype, Facetime, and Photo Booth. The only constant that I have noticed to fix it is to restart my MBP, and then immediately launch whatever program I want to use my camera with, and it works then. Any attempted use of my camera after that initial use fails. The light next to the camera doesn't turn on, and the camera doesn't turn on either. I have checked all the settings in Skype, Facetime, and Photo Booth and all of them are set to only use the Facetime HD camera, and I have never used a different webcam or third party device for video input. My camera Model ID is UVC Camera VendorID_1452 ProductID_34057.
I have tried as much troubleshooting as I know:
Reset NVRAM
Reset SMC
Ran Apple Diagnostics (No errors found)
Ran Disk Utility First Aid
Checked for any available updates (None available)
If anyone has any further recommendations it would be greatly appreciated
MacBook Pro (15-inch Mid 2012), OS X El Capitan (10.11.4), FaceTime HD Camera