This question already has an answer here:

I want to compare a video that is transfered through a Device and the original video by connecting them to a monitor or to a device that can measure everything for me and give us a full complete list of the differences so we can know how to improve our device in a way that give us the same result as the Original Video, and if you have any other methods to do so it would be really helpful and appreciated.

merged by Dr Mayhem Apr 9 '15 at 22:29

This question was merged with Compare an original video with a transferred video? because it is an exact duplicate of that question.