I just today discovered that the video showing the results of an asteroid impact on earth which was posted on Friday actually stopped at about the 6:50 mark and whoever had posted the video to YouTube added a narration that was not particularly relevant to the previous 7 minutes or so. I apologize for any confusion that may have resulted.
I saw the video on a different site and went to YouTube to get a downloadable version. I made the mistake of not watching the whole video that I found on YouTube.