I'll try to rename the file to your suggestion(NIN_0001.avi) & see what happens. I'll also try to convert another 3D movie over the weekend. Thanks for your help & I'll report back later!
Well, finally success guys! I converted another 3D movie for my son(Brave) & it showed up & played perfectly from the 3D Camera. It's weird though how the date shows as 1-1-2019 on these converted videos. I guess that's why I was missing seeing them from the sd card. I was looking for latest date added folders from the sd card. They actually show up at the beginning of the card. Thanks for helping guys!