Hm the first effect, It's just a transition, its from new blue fx. It's one of the roll effects in there.
The second effect It may be a video wall, clips just zoomed out of and placed in a grid format, but
when I do an effect like that I usually place all the clips i want within in different tracks but lined up directly up and down. Then I would add the cookie cutter effect to each one and create a grid kind of structure. And then finally pan and crop the clips so no subtitles show. Hope that helped