Is there a way to format a BlackBerry?

My Blackberry Tour 9630 seems to be having a video issue?

• I just got my Blackberry Tour 9630 and I added videos to my Micro SD card in the .avi format. Now these videos will open and play but for some reason at certain points the video will "get stuck" and pause, while the audio and the rest of the movie continues. How do I fix this? And what is the best way to load movies onto a blackberry, just copying the files onto the Micro SD card or using the blackberry desktop manager media exchange thing?

• Answer:

  as your description, I guess that your video is too heavy for your blackberry. in other word, you need to resize your video by using a video converter which you could download at http://www.dvd-ripper-copy.com/video-converter-platinum.html#165 easy way to copy movie from your pc is using USB memory card reader