Sounds like it's just:
| A - - - | E - - - | D - - - | E - - - |
At the end before the video cuts off they're playing:
| F#m - - - | E - - - | F#m - - - | E - - - |
That's not a triplet strum. That's a reggae strum. I'll tab it out below, but remember that reggae's got a bit of swing to it, so delay the strokes on the 4's and 8's.
Code:
|----------------|----------------|----------------|----------------|
|----5-5-----5-5-|----4-4-----4-4-|----2-2-----2-2-|----4-4-----4-4-|
|----4-4-----4-4-|----4-4-----4-4-|----2-2-----2-2-|----4-4-----4-4-|
|----6-6-----6-6-|----4-4-----4-4-|----2-2-----2-2-|----4-4-----4-4-|
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8