.MP4 Files changed

All of my mp4 files that I've created have been changed to a creation date of 12/31/1969. Has anyone else experienced this? The files work, but it's hard to tell when they were created. I have no problems with the image files created using Clone DVD, but the files created with mobile.

Windows OS

 

I checked 4-5 mp4's that I had done with CDVDm, all show the correct created/modified dates.

 

Thanks. My old files in that directory even updated to 1969. Guess it's a bad week to stop sniffing glue... Appreciate the reply.