Youtuber Casey Neistat uses a Canon 70D(among other cameras) to record his popular daily vlogs - They regularly reach several hundred thousand views each day. On a recent blog he got the error "Movie recording has stopped automatically" with his 70D And according to Casey- he get's this often even though he uses a fast card.  His method of dealing with the error is. . well you can guess from the title and you can watch the video below. I have it queued up for you to start right before the camera violence.https://youtu.be/dK9SSu3uZ2Q?t=4m21sI have shot with lots of Canon cameras and have a 70D, and we have two 5D Mark III that we regularly use (see what's in our bag) and the ONLY time I get that error is when I am using a card that is slow or bad.  Before smashing a camera I would highly recommend trying a different card. He shows the card he uses, they are actually on sale today at Amazon, and even though it states it is a fast card and I have never had an issue with Transcend cards - they can and will go bad or even arrive bad.   Also he smashes the lens too which clearly is not part of the problem - it's his gear, he can do what he want but it certainly feels wasteful.