If I copy the video's to the local hard drive, they work, but if I copy them to the raid (/mnt/devices/128/ public or user_1 or anywhere, nothing happens. Before you shoot me in the head. I would love to understand what is going on. Which log file should I check before asking for more help.
I'm already thinking on using plan B. Remove all files, from the raid. reconfig raid device and put them back.
But probably it is something fairly easy and Im willing to try to solve it!