Update README.md

Author: Liquidream

README.md

@@ -48,5 +48,5 @@ Some other great SCUMM resources I found along the way include the following:
 - [Ron Gilbert's post about "SCUMM Script"](http://www.pagetable.com/?p=614)
 - [ScummC - A Scumm Compiler (by Alban Bedel)](https://github.com/AlbanBedel/scummc)
   - (Particularly the OpenQuest example)
-- [Ron Gilbert - Maniac Mansion postmortem in 2011 (Video)](https://youtu.be/wNpjGvJwyL8)
+- [Ron Gilbert - Maniac Mansion postmortem from 2011 (Video)](https://youtu.be/WD64ExGHBWE)
 - [Ron Gilbert's post about "Puzzle Dependency Charts"](http://grumpygamer.com/puzzle_dependency_charts)