Note that migration is entirely possible without watching this video! This is just provided as additional guidance for the process, and as a resource that can be consulted in case any of the faircamp migration help messages are unclear.
If you want to jump right into the step-by-step instructions, start at 1:45.
¹ At 2:01 I'm saying "A catalog that is at the root of the catalog (...)", this of course was meant to be "A manifest that is at the root of the catalog (...)"
² At 4:00 "We'll see whether I got everything wrong" was rather meant to be "We'll see whether I got anything wrong" :)