Hi carcarzoom,
Thanks for stopping by the Apple Support Communities. It appears that you are having some issues importing all the video clips from your iPhone to your PC. I know it is important to have all the videos in the same place. These support articles go over some information pertaining to your issue.
Import photos and videos from your iPhone, iPad, or iPod touch
Photos and videos that you sync from your computer to your iOS device using iTunes can't be imported back to your computer.
Learn what to do if you can‘t import photos from your iPhone, iPad, or iPod touch to your computer.
If you can‘t import photos from your iPhone, iPad, or iPod touch to your computer
Have a great day!