VLD8 - butts.zip's Dragon Coin TAS

How are the thumbnails so blurry in YT, yet in Irfanview at 4x the original resolution the quality is better? Like come on, dude. :/ Video response to:    • VLDC 8 - TAS of Zyglrox Odyssey's Level      • Vanilla Contest 8 -  28 - RIP   I don't own anything, Nintendo and YouTube.