Some Videos Not Playing

I have a website which streams videos from AWS3 and up until last week was working perfectly fine. I use 3 different plugins for displaying the videos, ProfitBuilder, EasyMediaGallery and SimpleVideoPro.

I have been trying to pinpoint the problem and have realised that all 3 plugins play or do not play the same videos. It seems that the videos that play are all under 2mb, the ones larger than 2mb don’t.

I then came to the conclusion that the only two common denominators were the hosting server and WordPress. I contacted the hosting company and asked them if there were any restrictions on playing videos of 2mb or larger and they said no, everything was in order, which just leaves WordPress.

Any assistance with this problem, ideas and theories would be most welcome in trying to solve this.

Thanks,
Lee.