Ok this is a really stupid question but since I cannot find the answer I guess I have to ask. I have a file with an avi file extention. How do I find out what kind of file it is (I suspect that it is divx 3). Is thier a program that can look at a file and determine what it is? Second, how do I find the right codex? At least one program that I use to try to convert it said that it was divx 3 but I went looking for the codex and thier are diffrent versions (specifically 3.1 alpha and 3.22b are ones I found).
On a side note, does anybody know a a good (hopfully not to hard to understand) website/guide or whatever where I could read and learn more about codexes and avi file formats?