I have had the same problem as many others.
Where I try video recording on my Moto X and only get the SUPER FRUSTRATING - "not able to start video capture"
I tried the Google "3 Dot" - Google Now Shut Down and it worked upon reboot..."ONCE." Only to have it not work until another reboot...
I had to resort to carrying around a spare iphone to record what my Moto X couldn't.... auuggghhhh!!
Anyways, to make a long story short, Ben's comments fixed my problem...
Originally Posted by lifemac3
I HAD THE SAME THING for the last 3 months. I found it v frustrating.
THIS FIXED IT FOR ME AND FOR OTHERS
REMOVE THE APP CALLED "CALL RECORDER" as this uses the microphone at all times and stops video from working. Other call recorders seem to work fine with no affect on video.
After I deleted this app...NOW I have use of my Video Camera and DO NOT GET THE "not able to start video capture", AND I just tried to set up Smartphone payments with Square.com (the app would not work with the swiping Dongle because it said "A RECORDING APP NEEDED TO BE CLOSED" for that process to occur) which lead me on another internet search for a solution and wound me up backtracking to here and eventually to Ben.
So now I can Take Videos and charge people for them??? Ha ha, Maybe I will now!! Who Knows!! ;P
Thanks Ben for your AWESOME Solution!!!