Thanks for the replies!
1. I am getting no error messages.
2. I am running v7.09
3. VPS
4. I previously set PHP.INI max upload to 500M and the files I'm trying to upload are much smaller than that.
5. I have checked file permissions through Host Tools and everything appears to be correct.
After some experimentation this weekend I think I'm going to conclude that it's something about the video my camera takes. I tried uploading other video's that I have received via email from others and they upload fine. Also, I think I mentioned that I can use the record function in Dolphin and it works fine also. I have contacted DXG (manufacturer of my camera) and asked them for help. After looking at their FAQ I don't expect help any time soon.
I've tried converting the AVI files that my camera outputs to many different types to see if it makes a difference but to no avail. (MOV, MP4, FLV, WMV,etc.)
Thanks for the help!