HN user
> You can download mp4 files directly from Youtube.
You really can't.
> I've found a way to download videos right from the domain googlevideo.com
I assure you, you really didn't.
From TFV:
"In order to be able to perform the landing they needed to update their software to give it optical navigation abilities ..."
Imagine being part of the team that had to do that, fast, chop-chop, or else their billion dollar space mission would fail miserably.
"Oh, you only need us to implement vision. Ok, no biggie."
The filenames are readable and informative. The dmca.mp4 is a 10 minute video of a group of women standing in a half-circle, singing and doing "spank the monkey" gestures.