Different ISO file extensions?

[kuros456]

I just started using a PSX emulator (ePSXe 1.8), and I'm noticing when I download ISOs, they're coming in a folder with several files, each with a different extension. I only have a few ISOs so far, and I've come across .bin, .cue, .ccd, .img, & .sub

Can someone explain the difference between these files? Is there a certain one you should use?

I should mention I'm an accuracy whore, and I've also read something that says there's a program called Deamons Tools, and it could make the EMUs more accurate if you run the ISOs from that. Is that correct?

[Mupen64 Man]

I can't discern any noticeable difference from reading from Daemon Tools and just the ISO. Im not going to pretend that I know a whole bunch about differences between ISO formats, but there seems to be a difference in the size of data, so maybe some compression differences? Im sure someone with more knowledge with show up and explain more than I.

[ulaoulao]

An iso is not to be confused with a disk image by any means. There are lots of algorithms in ripping a disc. The bin cue mainly came out of nowhere for psx games. The bin is a binary dump of the disc and the cue tells it were the music data starts. Its made by cdr-win.

The .ccd, .img, & .sub are CloneCD images. Again the img is the dump the other file tell you where audio and indexes start.

In other cases you will get rxx files. This is a rar archive that must be extracted to revile the rip.

[kuros456]

Thanks for the quick replies!

To further clarify, is there any file type that is better to use for Ps1 emulators, or will they all work just as good?

[ulaoulao]

it does not really matter anymore. It did at one time.