Remember, you are watching the video with preknowledge of the contents. You know its a camera, and thus will see it as such.
This is a war zone, and frankly, the soldiers in the line deserve the benefit of the doubt. Mistakes will, regrettably, occur when in a zone of hostilities. There is NO WAY to conduct any war where you eliminate the possibilities of things like this happening. Hesitate too much, wait too long, in order to get conclusive proof of what you believe you are seeing can result in loss of lives, often much larger loss of lives than the number lost in this regrettable and unfortunate error.
Lastly, the leaking of confidential and top secret material, regardless of the motivation, is and should always be treated as a serious criminal matter. The person leaking has no idea of what the full consequences of those leaks may end up being, regardless of whatever idealistic justifications they feel in doing it.