ADVENT CALENDAR PUZZLE 18

Solution:

1. MNEMONIC: The last word of each clip is a BIP39 word of the mnemonic. You get

   inquiry midnight skill void hello cool demand farm 
   actress still project alarm slam ranch radio month 
   shed thing render crop immune winter save hub

2. HIDDEN MNEMONIC: Look at the video comments on vimeo
3. HIDDEN SEED: Look at the user bio