I just downloaded this in mp4 format with my "Ant" flash video downloader plugin for my Mozilla Firefox browser (Windows format). I'm not sure why it works on some YouTube posts and not others. Perhaps newer options with YouTube posters settings that I haven't looked into yet. (I am a YouTube poster). But it worked on this.
What I do is convert the flash video formats that I download (either flv, mp4 or webm files) to Video CD mpg format with "Pazera" freeware and burn them to a disk so I can watch them on my old tube TV where they usually view fairly acceptably. You can also find other software (perhaps freeware) that will strip the audio file from it (either a wav or mp3) and burn it to an audio or data disk.
At any rate the mp4 video should play on your computer just like it is. This one has pretty good resolution too.