What is DVD? |
 |
DVD stands for "Digital Versatile Disc" or "Digital Video Disc". DVD is an all in one optical storage which can store high quality video, audio and all kinds of data.
A whole movie can stored on a single disc. Superb video and audio quality and rich capability decide the absolute status of DVD disc in market. And DVD hardware had nice compatibility, you can play your audio CDs and CD-ROMs on DVD hardware.
DVD disc stores DVD video, DVD audio and some extras like DVD menu, subtitles. The popular audio formats are stereo, Dolby Digital and DTS. You can store 2 hours high quality video and audio on a recordable DVD. DVD can store more data if you decrease the quality. Some DVD disc can record data just once, and some can write data more times.
The single layer DVD is about 4.37GB, and the double layer DVD can store 8.75 GB data. The next generation of DVD is High-definition disc, like Blu-ray disc. A dual layer Blu-ray Disc can store 50 GB. The diameter of standard DVD is 12 cm, and the Mini-DVD is 8 cm.
DVD Video is the most popular home video distribution worldwide. DVD Video has standard screen size 4:3 and wide screen size 16:9 which saved on 720×480 (NTSC) or 720×576 (PAL) at 29.97 or 25 FPS. Audio is usually using Dolby Digital (AC-3) or Digital Theater System (DTS) formats.
Most DVD movie disc are protected by DVD encryption. Like CSS encryption, Sony Arccos. Generally, DVD disc has a region code to carve up its playing area. NTSC is the region code of most America countries and Asia countries. PAL DVD is used in most Europe countries. |
|
DVD Formats: |
- Non-recordable formats:
- DVD-ROM: They are similar to CDs, it has silver or gold colored. They can be single-sided/single-layered, single-sided/double-layered, double-sided/single-layered, or double-sided/double-layered.
- DVD Plus: It integrate DVD and CD technologies, and can be played on DVD player and CD player.
- Recordable formats, supported by the DVD Forum
- DVD-R: It is designed for general people. It can be write for once. It can be played on most DVD-ROM players. It can record up to 4.7 GB in a similar fashion to a CD-R disc.
- DVD-RW: It can be write for more times. And can store 4.7 GB data like CD-RW.
- DVD-R DL: Double-layer DVD-R, can store 8.5 GB of data.
- DVD-RAM: It is compatible with few other-format DVD drives. Its rewritable ability is better than other rewritable formats.
- DVD-AR: A recordable DVD-Audio format.
- Recordable formats, supported by the DVD+RW Alliance
- DVD+R: It can record 4.7 GB data in single-layered/single-sided DVD+R disc. You can record only once.
- DVD+RW: It can overwriten several times. It can record up to 4.7 GB at up to 16x speed.
- DVD+R DL: It can store up to 8.5 GB of data with dual-layer.
|
|
DVD Copy Software - DVD-Cloner
|
 |
|
Features
