MiniDVD
From Wikipedia, the free encyclopedia
There are two types of MiniDVD.
- 80 mm DVD, which are smaller versions of the 120 mm DVD
- cDVD, which are standard CDs written with the DVD-video format
The name is also sometimes used erroneously to refer to the Universal Media Disc (UMD), the format used by Sony's PlayStation Portable.
[edit] 80 mm DVD
MiniDVD (Mini DVD or miniDVD) is an 80-mm diameter disc. In normal recording (standard DVD quality) it holds 30 minutes of video or 1.4 GB of data. Under SLP mode, comparable to VHS quality, it can hold 120 minutes of video. It was developed for use in camcorders, but like its full-sized 120-mm counterpart, it can be played back in most DVD players.
The format is also known as a video-single, or DVD single, being analogous to the CD single (miniCD) in being a singles format for music videos.
cDVD are also known as "3-inch DVDs" in reference to their approximate diameter in inches.
Mini DVD-R/-RW media is available and is marketed for use in some newer DVD-based camcorders that record directly to the 80-mm DVD disc. Typically these cameras offer three quality settings by varying the bitrate: XP (20 minutes), SP (30 minutes), and LP (60 minutes). They have also been known to be used for making duplicates of Gamecube games.
Single Sided Dual Layer DVD+R and DVD-R forms of this media are now available. Released in Q2 of 2006[1] they boast 2.66GB of data storage and hold upto 55 mins of continuous Standard Definition video with recording speeds on a par with DVD-9 DL discs.
Although working out at around £1 per GB, they are aimed at the Camcorder market where they will nearly double the length of recording time, but are also compatible with DVD players & drives that support DL.
| Physical size | Single layer capacity | Dual/Double layer capacity |
|---|---|---|
| 12 cm, single sided | 4.7 GB | 8.5 GB |
| 12 cm, double sided | 9.4 GB | 17 GB |
| 8 cm, single sided | 1.4 GB | 2.66 GB |
| 8 cm, double sided | 2.8 GB | 5.2 GB |
Nintendo used a disc-based format for their GameCube system, which was a variant of an 80-mm DVD.
[edit] Warner Mini DVD
Mini DVD is also the brand name of a line of commercial DVDs and players released by Warner and CyberHome and intended for a young audience.[2]
[edit] cDVD
mini-DVD or cDVD is also used to describe a CD that contains DVD data, allowing all the features of the DVD format to be used on the cheaper medium. The difference between them is the physical disc itself. However, these CDs can only be played on computers or some standalone DVD players, not VCD players, and have only a fraction of the capacity of a DVD. Additionally, mini-DVDs must be written to CD using the Mode 1 format. This limits the amount of data that can be stored on an 80 minute CD to 700 Megabytes, whereas other CD-based video formats such as SVCD use the Mode 2/XA format and can store roughly 800 Megabytes of data per 80 minute CD.
[edit] See also
[edit] References
- ^ Mini DVD+R Double Layer from Verbatim (2006). Retrieved on 2006-06-23.
- ^ Warner & CyberHome team for mini DVD player launch (2006). Retrieved on 2006-06-23.
[edit] External links
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| Magnetic tape |
VERA (1952) - 2 inch Quadruplex videotape (1956) - 1 inch type A videotape (1965) - U-matic (1969) - Video Cassette Recording (1972) - V-Cord (1974) - VX (aka "The Great Time Machine") (1974) - Betamax (1975) - 1 inch type B videotape (1976) - 1 inch type C videotape (1976) - VHS (1976) - Video 2000 (1979) - VHS-C (1982) - M (1982) - Betacam (1982) - Video8 (1985) - MII (1986) - D1 (1986) - S-VHS (1987) - D2 (1988) - Hi8 (1989) - D3 (1991) - D5 (1994) - Digital-S (D9) (199?) - S-VHS-C (1987) - W-VHS (1992) - DV (1995) - Betamax HDCAM (1997) - D-VHS (1998) - Digital8 (1999) - HDV (2003) |
| Optical discs |
Laserdisc (1978) - Laserfilm (1984) - CD Video - VCD (1993) - DVD (1996) - MiniDVD - CVD (1998) - SVCD (1998) - FMD (2000) - EVD (2003) - FVD (2005) - UMD (2005) - VMD (2006) - HD DVD (2006) - Blu-ray Disc (BD) (2006) - DMD (2006?) - AVCHD (2006) - Tapestry Media (2007) - HVD (TBA) - Protein-coated disc (TBA) - Two-Photon 3-D (TBA) |
| Grooved Videodiscs |
SelectaVision (1981) - VHD (1983) |
