It's against a wrestler, but it's a nice sweep from the closed guard that is simple and worth adding to the arsenal ... Essentially, it's a scissors sweep against the shoulders. From the closed guard, open your guard and bring your legs up high under the arms as possible. Pick a side and bring the leg on that side up a little higher.
Then switch ("scissor") your legs quickly, bringing the higher leg down against the guy's leg who is in your guard. At the same time, swing the other leg up under the guy's arm with the same sort of pummel you'd use to set up an armbar or even an omoplata.
It looks like you want to control the biceps, if possible. That would take care of both the arms and the shoulders. The lower his posture the better. Remember if the posture is good, we prefer the guillotine/kimura/cross-over sweep series of attacks.
Rickson Sweep
The sweep appears a little over halfway through the clip. About where the "E" in "SHARE" is below the player.