The Story:

13 - 0:00: Someone is in a cave,
13 - 1:00: shoots/get got at twice, with one arrow connecting (I will assume shot at),
13 - 1:30, 11 - 0:00: same person walking through the cave after the previous encounter,
11 - 0:18: stops to do something with flint and steel,
11 - 0:35: then does something with a book/paper,
11 - 0:50 to 1:00: then runs over stone, then dirt/gravel
13 - 1:41 to 1:45: a creeper attacks the person, falls into a pool of water, climbs out, and staggers away.

My video on this I made 2 years ago!
https://www.youtube.com/watch?v=BR6HBXobY3k

Thanks to Dirtpiper for solving this mystery way back in 2016!

https://www.reddit.com/r/Minecraft/comments/4chbed/finally_solving_the_disc_11_mystery/