Thanks for the reply. After investigating further the issue looks to be with the sd cards. I bought both at the same time from the same place. The sd cards are sandisk 16gb Class 4, when I add more that 2gb worth of videos they seem to copy but not correctly. All the videos are avi's. Once I add them to the card I am unable to play them direct from my PC. If I look at the summary of the video it does not show the resolution and frame details like the original does.
I have tried MX player which says the same that the video can not be played.