DVD Basics

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GLOSSARY
We often get asked "what is DVD-R?", "What is DVD-RW?" or "What is the difference between DVD-R and DVD-RW?" or "What is the difference between DVD_R and DVD+R?". So we thought we would put together this glossary to help people understand all the confusing terminology surrounding recordable DVDs.
DVD-R and DVD-RW
DVD stands for Digital Versatile/Video Disc, DVDR stands for DVD Recordable and DVDRW for DVD ReWriteable. If you're familiar with regular audio/music CDs or regular DVD-Video discs, then you will know what a recordable DVDR/W looks like. A recordable DVDR/W stores up to 2 hours of very good quality DVD-Video, including several audio tracks in formats like stereo, Dolby Digital or DTS and also advanced menu systems, subtitles and still pictures that can be played by many standalone DVD Players and most computer DVD-ROMs. If you choose to lower the video quality it is possible to store several hours video on a recordable DVDR/W using low bitrates and low resolution with video quality more like VHS, SVHS, SVCD, CVD or VCD. It is also possible to have up to 4.38* GB ordinary data or mix DVD-Video and data on a recordable DVD that can be played by most computer DVD-ROMs. Today there are three competing DVD Recording standards, DVD-R/W and DVD+R/W have pretty similiar features and are compatible with many standalone DVD Players and most DVD-ROMs while DVD-RAM has less DVD Player and DVD-ROM compatibility but better recording features. DVD-R/W was the first DVD recording format released that was compatible with standalone DVD Players. DVD-R is a non-rewriteable format and it is compatible with about 91% of all DVD Players and most DVD-ROMs. DVD-RW is a rewriteable format and it is compatible with about 74% of all DVD Players and most DVD-ROMs. DVD-R/W supports single side 4.7 GB* DVDs(called DVD-5) and double side 9.4 GB* DVDs(called DVD-10).

 

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