Other formats are 185 MB (21 mins), which has the same data density as a 650 MB full-sized CD, and 210 MB (24 mins), with the same data density as a 700 MB full-sized CD, used for "Pocket" data storage. ... These cameras could also record MPEG video directly to the Mini CD - a sort of precursor to mini DVD camcorders. The media size for these ...

A pre-recorded MiniDisc is similar to a CD, except it is smaller. It stores about the same amount of audio as a CD. Recordable MiniDiscs store about 140 megabytes of information that are scattered across the disk and put back together when played.

"MiniDisc" is not just a smaller CD, it is a distinct product that uses a caddy with a disc inside, and if the product you're referencing specifically states "MiniDisc" you will definitely need a MiniDisc player.

However, both CDs and MiniDiscs can store the same amount of music (75 minutes or so). The difference is that a MiniDisc uses a digital compression technique called ATRAC (Adaptive Transform Acoustic Coding) when storing music.

MiniDVD or 8 cm DVD (also "3 inch DVD") is a DVD disc with a reduced diameter of 8 centimetres (3.15 in). It has been most commonly used in camcorders due to its compact size. [ 1 ] The most common MiniDVDs are single layered and hold 1.4 GB of data, but there are variants that can offer up to 5.2 GB of storage space, through a combination of ...