Something Big went Wrgon

[MadMan1300]

So after having to deal with big Video Sizes i went and put Action to record in MP4 after testing it out with a 15 mins and the size of it being small i went a head and did 15 videos of my Lets play than after a long long ass time i went and had a look at them and nothing all the videos were 50 sec long what in gods green earth did i do wrong.