I ended up with a 1.46GB / 1.37GiB (1,469,796,255 byte) file out of youtube-dl, which is... close, but not exactly the same as what everyone else is reporting. I grabbed it with the following, which combines the 1080p video and AAC audio tracks:
Code:
youtube-dl -f '137+140' 'https://www.youtube.com/watch?reload=9&v=Nz-eF5_tI-s'
The resulting file has a sha256sum of 6d806d1085ca255cda45f576545629881c494ab8a4f1b5b635 fdaf69953c896f.