I often use scripts in biterscripting to rename a large number of media files. If you have files IMG_*.JPG in folder C:/folder, you want to rename them starting at number 309 (just an arbitrary number, as example), use the following script.
# Script renamejpg.txt
cd "C:/folder"
var str list ; lf -n "IMG_*.JPG" > $list
var int count ; set $count=309
while ($list <> "")
do
var str file, newname ; lex "1" $list > $file
system rename ("\""+$file+"\"") ("\""+"IMG_"+makestr(int($count))+".JPG"+"\"")
set $count = $count + 1
done
This will rename all files to IMG_309.JPG, IMG_310.JPG, etc. (To try, save the script as C:/Scripts/renamejpg.txt, start biterscripting, enter the following command.
script "C:/Scripts/renamejpg.txt"
Of course, test first. Use correct path instead of "C:/folder". Download biterscripting
http://www.biterscripting.com
if you don't have it - it is a good tool to have in addition to everything else you have.)
Tell me more about your requirement.
Sojwita