And then play the virtual DVD with a media player. So the commonest way to open an ISO file is to mount the ISO image file to a virtual DVD drive like a physical disc was loaded in your computer's optical drive. And ISO images are expected to be copied exactly as they were stored on the disc. ISO disc image are uncompressed and do not use a particular container format, they are a copy of the data on an optical disc'. According to Wikipedia, 'there is no standard definition for ISO image files.
