When right-clicking on a directory once I got an entry "open with vlc". Now with precise this entry is gone. How can I get it back?
edit: Yes I have it in the submenu "open with". But how can I get it in the top menu?
Instruction for Directory: After subsequent comment by the OP, I realized that, he wanted to enable an entry in the directory with "Open with VLC media player". (And OP done this, before I edit the answer. ;P).
To do so, Follow the steps from 1-5. In the step 5, the procedures are slightly changed. These are:
If you ever wanted to revert the change, open Ubuntu-tweak and select the changed file type and Press the Reset button at the bottom-right position of Ubuntu tweak. All settings will be restored as before.
For Ubuntu 13.10 I just created a little script in the nautilus scripts folder and made it executable.