Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicate:
How do I find out the file type without an extension?

I am wondering if there is any way for understanding for example a file is a video file after we change it's file extension to something else like .bin ?

share|improve this question

marked as duplicate by Karan, Dave M, HackToHell, terdon, Kyle Jones Jan 14 '13 at 8:23

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

not sure what you mean, but if you load the file into a text/hex editor you can sometimes tell by the first couple bytes what the file type is... – Logman Jan 12 '13 at 16:18
Under unices you have the command file which looks at the magic bytes at the beginning of a file. (You specified windows as OS, so this might not help you but it will help others who search for the same problem.) – Hennes Jan 12 '13 at 16:38
up vote 1 down vote accepted

Check out this command line tool:

Trid Tool

Very handy, there is a GUI version as well.

share|improve this answer
Working like a charm. Thnx – Huseyin AKSU Jan 12 '13 at 19:32

Not the answer you're looking for? Browse other questions tagged .