Multimedia File Sizes

Multimedia File size

Low res photo for the web - 1024x720 - jpg 100 Kb

Photo for printing A4 size –jpg – 4000x3000 4MB

Photo for magazine (RAW format) 4000x3000 13MB

Music – wav file – 3 minutes 20MB

Music - mp3 -128kbps – 3 minutes 3MB

Music - mp3 - 256kbps – 3 minutes 6MB

90 minutes of DVD quality video (xvid/divx/mp4 compression) 720x480

700MB

1 DVD film (mpeg compression) 720x480 4.5GB

1 hour of Digital Video (DV compression on tape) 720x480

13GB

1 hour of HiDef video (AVCHD compression on memory card) 1920x1080

6GB

1 hour of HiDef video (HDV compression on tape) 1920x1080

11GB

Hard Drive Capacities

Name Pit size Laser wave length

Track distance

Data Transfer

Rate

Maximim Capacity

Year on the Market

Comments

CD Compact Disc 0.834 μm 780nm 1.6μm 1200 Kbps 650 MB 1982 Enough space for about 90 minutes of compressed video

DVD Digital Versatile Disc 0.4 μm 650nm 0.74μm 10.5 Mbps 4.7 GB 1996 Many formats - maximum size is 17 GB - DVD-18 (Double sided and double layer)

Blu Ray 0.204 μm 405nm 0.4μm

36-54 Mbps

25 GB 2006 Double sided possible - at the moment this becoming quite normal in Europe

CBHD China Blue High Definition

0.204 μm 405nm 0.4μm 36 Mbps 30 GB 2006 Double sided possible - very cheap, used extensively all over China

HVD Holographic Versatile Disc

? ? ? 1000 Mbps (125 MB/s)

6 TB 2016 Theoretical 1 PB (Peta Byte) Uses the interference of two green laser beams and a third red laser beam is used to monitor the position of the green laser beams. Stores information in laser interference fringes (patterns)

5D DVD Five-Dimensional Digital Verstaile

Discs

? ? ? 1500 Mbps 10 TB 2018 5D DVDs use a writing system that uses extremely tiny particles on which data is written, with multiple layers that are read by three different colours of laser

Optical Storage

How optical storage is changing