Ahhh.. now that makes sense.On Android, it's not so much about the RAM, but rather the GPU that's responsible for this process. This problem is related to how Unity handles video clips. When an animation is about to start and you see a black screen, it's because the GPU are loading the correct texture. In this case, it's a video clip. I've compressed them as much as possible. However, depending on the chip, it can take a few seconds to load...
Unfortunately, I don't have a solution for this issue at the moment. I'm so sorry
It is an old chipset(3 years now) so makes sense.
Also never have i waited enough for gpu to load it, so makes sense i never saw the loaded video
I will try to wait and see if really does load. And even if not it's not a big deal, everything else works fine. Games still very good even without animations.
Thanks for the reply, much appreciated.