Depends on the source unfortunately.
In the case of editing material native from P2….you simply can’t because the media is dependent on the file/folder structure.
In the case of .mov’s or other types of media.
I use Adobe Bridge a lot to create useful file names, but that append, the original file name:
like: 2013_Wide Shot_Ext_bldg pan_0x314.mov
this allows searches at the OS level that mean something and can also help avoid naming collisions and relinking issues.
hope that helps….
Alex Udell
Editing, Motion Graphics, and Visual FX