Default [Q] video player probleme

Hi, First sorry for my english
I have s3 mini with PAC (mclaw) 4.2.2, Everything works fine exept when i open a video in any browser it open it with a video player that i didnt install (i think it s the default one) but the probeme is that i have a full black screen while the video is played (sound works) i also tried other video player but the same probleme exept MX PLAYER but i can t set it as default (because idk the name of the actual video player)
Thank you