And even if it can’t be proven altered,
they’ll continue to say it is.
That's right. Once they throw the first accusation out there it becomes a perpetual tool for the likes of Chris Mathews, Matt Lauer, Stephanopolus and the rest. A permanent part of any question they ask would be, "Many say the video is altered...", or "The allegedly altered video...", ...or "The video that was never proven to be unaltered...".