Problem with Different Render Specs

Hi everyone. I have a scene that I intend to use as a YouTube intro, that includes text with LocRot keyframes. I first rendered this at 1280x720 pixels, and the mp4 turned out great. Then I turned around and used the HDTV render preset, which uses 1920x1080 pixels. The HD render sucks, the mp4 is glitchy and doesn’t even include the last 10 frames of the animation. I changed the dimensions, (nothing else) from the HDTV 1920x1080 to my original 1280x720, and rendered it again. Again, the 1280x720 looks great, but the 1920x1080 just doesn’t work. Please help! (I’ve included a link to a MediaFire download of the files referenced) (5.49 MB)