What's making the arm shape then? Another layer of mountains? Hard to tell with so little depth in the image.
Is the MP4 higher quality than the WMA? I'll go download that if so.
It's very clear in my image what makes the arm shape. I even outline it in green and label it.
The fog is nestled in and around that peak I outlined in red. There is fog wrapped behind the peak, so there is clearly a crevasse behind the peak, and thus the "arm" is really part of another slope/peak behind the one I outlined. I couldn't make out the top of a peak if there is one... it may just slope all the way to the top, or the peak may be hidden in the fog.
As for the MP4/WMV question I'm not certain... I don't even remember the option. I downloaded the MP4 on the day the trailer launched. Edit: But I just checked for you and eyeballed it and the MP4 seems to have more detail than the WMV. But it seems to depend on the shot. Usually the MP4 seems to win out. On the WMV you couldn't make out the bartender/waiter's face.. Comparison:
http://i1022.photobucket.com/albums/af346/jonwd7/Skyrim/chair-backs.png?t=1303544314 ... Doesn't seem to be people sitting, btw... just chair backs.
Whatever the images in this thread came from are much worse quality than both, which was my original point in bringing it up. Threads about anolyzing small details should probably be using the MP4 version as "evidence".