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I'm always curious about what is hidden inside those files, like pdf, mid, mp3, mkv, etc. I can read the spec in the wikipedia, but it is hard to understand. Tools like wireshark can extract data information from packages. Is there a tool like wireshark can extract all information from a binary file? I know there is a tool name file can get some information, but it is far from enough.

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  • For most of these files, the information in the file is the file. You can display or play the file, or convert it into another format; but what do you mean with "extract"? What exactly is the desired result?
    – CL.
    Feb 4, 2015 at 7:43
  • @CL. You can see my answer. There are the tools I expected. Feb 5, 2015 at 0:25

3 Answers 3

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You want to read a file, but not use the programs made to read the files? Like a pdf viewer for .pdf files, a music player (like vlc) for .mid .mp3 .mkv files? Using the proper program to read the files would be the best idea.

But, you could open the file in a hex editor (any one should work) and look through every byte of the binary data yourself...

Or if you have the gnu tool strings it would do this:

strings - print the strings of printable characters in files.
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I've found some tools, but looks like none of them support enough file formats.

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MRIP280 exists since MS-DOS times and could extract from any file a lot of other stuff starting with pictures, audio, etc. Give it a test to see what it supports and try to find an updated alternative to it.

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