Resolution

States how many pixels are arranged vertically and horizontically. When these two values are multiplied they usually result in a value in the millions, which is often also the derived "Megapixel" value stated on displays of cameras.

Blu-ray harddisk

Blue-ray is the successor of the DVD. On blu-ray discs one can save entire feature films in highest TV resolution according to HDTV-standards and with digital stereophony.