Hi mate, sorry I did not answer your question previously.
- Considering that the HD was formated and after running a restoration process, I was able to have the files with the correct name. I made some copies of these files and I noticed that the time expended by Windows copying these files felt like a normal time.
- After the process was completed, I was not able to play any of these videos and now as a second stage, I am trying to fix them because I believe that they are corrupted.