The audio data on a DVD movie can be , , (MP2), or (AC-3) format. In countries using the system standard DVD-Video releases must contain at least one audio track using the PCM, MP2, or AC-3 format, and all standard PAL players must support all three of these formats. A similar standard exists in countries using the system, though with no requirement mandating the use of or support for the MP2 format. DTS audio is optional for all players, as DTS was not part of the initial draft standard and was added later; thus, many early players are unable to play DTS audio tracks. Only PCM and DTS support 96 kHz sampling rate. Because PCM, being uncompressed, requires a lot of bandwidth and DTS is not universally supported by players, 96 kHz sampling rate is rare for DVDs. The vast majority of commercial DVD-Video releases today employ audio. The official allowed formats for the audio tracks on a DVD Video are:
DVD-Video is a consumer video format used to store digital video on discs, and is currently the dominant consumer video format in , , , and . Discs using the DVD-Video specification require a drive and an MPEG-2 decoder (e. g., a DVD player, or a computer DVD drive with a software DVD player). Commercial DVD movies are encoded using a combination MPEG-2 compressed video and audio of varying formats (often multi-channel formats as described below). Typically, the data rate for DVD movies ranges from 3 to 9.5 Mbit/s, and the is usually adaptive. It was first available for retail around March 26, 1997.
With HD DVD launched in March 2006 and Blu-ray launched in June of the same year, a started. Industry analysts likened the situation to the of the 1980s. At the time of their launch, consumer awareness of either high-definition format was severely limited, with the end result that most consumers avoided both formats, already content with DVD. In February 2008, Toshiba capitulated, citing low demand for HD DVD and the faster growth of Blu-ray, among other reasons. Toshiba ended production of their HD DVD players and discontinued promotion of the format, while the HD DVD movie release schedule concluded by June 2008.
By decrypting a DVD movie, an individual can either make a copy of it to save on their hard drive, or they can make an additional copy onto a blank DVD. Use DVD Shrink to decrypt protected DVDs with help from a Web designer in this free video on computer help and tech support.