Remove Hidden data from Videos

That could be possible, but what the batchpurifier etc do is remove the meta data from the image. Incase of video however, Youtube & Facebook can detect the video based on sound and visuals. That is why most people are unable to make videos unique and no matter if they add borders etc. Youtube still catches on based on sound and visuals.

Hence changing/removing meta data wouldn't be of use. Hope that helps.