1.2.6 Sign Language (Prerecorded)

Take a wild guess what you need to do here. That's right fucker, if you have prerecorded audio content in sychronized media, then you gotta sign that shit.

But let's be serious, this is a Level AAA success criterion and you probably still have 1.2.3 Audio Description or Media Alternative (Prerecorded) to deal with. Go ahead and add this to the backlog you optimisic chump.