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DVD recorder drives can be used in conjunction with DVD authoring software to create DVDs near or equal to commercial quality, and are also widely used for data backup and exchange. As a general rule, computer-based DVD recorders can also handle CD-R and CD-RW media; in fact, a number of standalone DVD recorders use drives designed for computers.
Free software implementations often lack features such as encryption and region coding due to licensing restrictions issues, and depending on the demands of the DVD producer, may not be considered suitable for mass-market use. DeVeDe (Linux) DVD Flick (Windows only) DVDStyler (Windows, Mac OS X, and Linux using
dvd+rw-tools, a package for DVD and Blu-ray writing on Unix and Unix-like systems; K3b, the KDE disc authoring program; Nautilus, the GNOME file manager (includes basic disc burning capabilities) Serpentine, the GNOME audio CD burning utility; Xfburn, the Xfce disc burning program; X-CD-Roast
The Product Key is a multi-precision integer of roughly 115 bits, which is stored in little endian byte order in an array of 15 bytes. Of these 15 bytes the least significant four bytes contain the Raw Product Key in little endian byte order. The least significant bit is removed by shifting this 32-bit value to the left by one bit position.
DVD-RAM (DVD Random Access Memory) is a DVD-based disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers. DVD-RAM media have been used in computers as well as camcorders and personal video recorders since 1998.
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DVCPRO50 was introduced by Panasonic in 1997 and is often described as two DV codecs working in parallel. The DVCPRO50 doubles the coded video data rate to 50 Mbit/s. This has the effect of cutting total record time of any given storage medium in half. Chroma resolution is improved by using 4:2:2 chroma subsampling.
DVD±R/W (also written as, DVD±R/RW, DVD±R/±RW, DVD+/-RW, DVD±R(W) and other arbitrary ways) handles all common writable disc types, but not DVD-RAM. [1] A drive that supports writing to all these disc types including DVD-RAM (but not necessarily including cartridges or 8cm diameter discs) is referred to as a "Multi" recorder.