hi everyone, i've tried to transfer 2 videos which i captured using my nokia n82. it was in .mp4 format so i guess i will not have a problem and besides, my long lost N70 videos would play in my ipod touch. but when i play it in my itouch, i could see the thumbnail but i can only see black screen.i can hear the audio though but the video is missing. the videos are about 5minutes in length and about 100mb in size. what could have been the problem?