I watched this video, I downloaded it and tried watching it thru different enhancements. Whatever is was-it was moving very fast, it did go through the cloud structure in several spots, it was leaving a trail.
Question is, was there any loud thunderclap a bit further in your taping-in other words is your original version longer? If it was an object at that speed there should have been a double sonic boom sometime after it passed--only other thing would be the ball lightning, but I doubt it
any of you see the video of the thing in China? It looks like a rocket launch at twilight,
http://www.youtube.com/watch?v=oPMvf-sGXCs
but Yahoo has a clip of pics, and that was NO rocket-clearly in the pics it was a craft of some sort
http://buzz.yahoo.com/buzzlog/93848?fp=1