What's wrong with my video playback on my PC ????

[Gizmonster]

I've transferred a video (mp4 format) from my phone to my laptop.
On my phone, the video plays fine. It's crystal clear, high def (1080p) and plays fine with no jumps, etc.
However, when I play it back on my laptop, the sound is fine, but the video jumps like mad and freezes in places.
The video is 239 MB and is 1 min 40 secs long.
I have another MP4 file (700 MB) that didn't come from my phone - this plays fine.
I've tried opening it with VLC player, WMP and Quick Time Player. They all either jump or play the vid in slow motion.
I've even transferred it to my desktop PC and I encounter the same problem.
Anyone any ideas what's going on plzz ????

[bassmanjack]

I've found this player plays most formats. . .

http://download.cnet.com/Daum-Potplayer/3000-13632_4-12199673.html