File Format Research

When trying to figure out the type of a file... Here's some useful sites

• Google Patent Search
• Great list of FourCCs

See if there's existing code:

• Github - Good place to search for "magic" values. Usually four bytes, search for the decimal and hexadecimal values both big and little endian.

Existing file format description:

• Library of Congress - Librarians are fighting a battle of being able to read old digital files. Paper is easy, bits are not.
• Microsoft Protocols - Microsoft has released documentation on a lot of their file formats.