The browser Firefox doesn't support the video format mp4.
to take action about, especially in order to solve a problem
Gloss: WORSE/\ BEFORE TWO-WE ARGUE, HARD to-INTERACT-x1 SINCE-THEN.
English equivalent: I find him hard to deal with especially since we had that argument.
Hmm, no words found now but, hey, it doesn't mean there is no expression for this concept in ASL.