During the fade to black this gradient breaks up into stripes which swoop outward. Some disolves look like the fader handle is moving in a series of little steps. Yep, all encoders have problems with dissolves. I don't know if the newer generation has gotten better. All the helicopter shots stress the compression, of course.
Some shots just have too much motion and the blocks start coming out.
One shot looking down at autumn leaves is particularly wicked. Bland areas in pictures which otherwise have lots of detail. I'm seeing it mostly in darker areas. Occasionally a cut will even appear to cut to the new image, cut back for a frame, and go on. I'm not used to.