I can see a reporter like Schefter exaggerating a story about missing meetings or that type of thing; however, when he reported that there was a video it was much different, IMO. If there really wasn't a video, then he would really be screwing himself up by reporting that there definitely was one because he would be proven to be incorrect. I think he definitely believed that there was a video. If he did believe it, then either somebody pranked him or there was one but it disappeared.
At the time of the video story, I didn't believe it; however, since then I've changed my mind.