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Discs using the DVD-Video specification require a DVD 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 of MPEG-2 compressed video and audio of varying formats (often multi-channel formats as described below).
The DVD format uses the 48 kHz sampling rate, and its doublings. In digital audio, 48,000 Hz (also represented as 48 kHz or DVD Quality) is a common sampling rate. It has become the standard for professional audio and video. 48 kHz is evenly divisible by 24, a common frame rate for media, such as film, unlike 44.1 kHz. [i]
Because DVDs became highly popular for the distribution of movies in the 2000s, the term DVD became popularly used in English as a noun to describe specifically a full-length movie released on the format; for example the sentence to "watch a DVD" describes watching a movie on DVD.
[e] The rate at which frames are displayed is known as the frame rate and is measured in frames per second. Every frame is a digital image and so comprises a formation of pixels. The color of a pixel is represented by a fixed number of bits of that color where the information of the color is stored within the image. [33]
On HD DVD, DD+ is used to encode all channels (up to 7.1), and no legacy DD track is required since all HD DVD players are required to decode DD+. ^ e On PAL DVDs, 24 frame per second content is stored as 50 interlaced frames per second and gets replayed 4% faster. This process can be reversed to retrieve the original 24 frame per second content.
a) General term for standards pertaining to consumer high-resolution TV. b) A TV format capable of displaying on a wider screen (16:9) as opposed to the conventional 4:3) and at higher resolution. Rather than a single HDTV standard the FCC has approved several different standards, allowing broadcasters to choose which to use.
Sony developed DVCAM based on the DV consumer format. The DV format was designed for use with metal evaporated tape, which offers approximately 5 dB better carrier-to-noise figures than metal particle tape. Customers have requested VTRs that can play additional DV-based 6 mm formats such as the consumer DV LP and DVCPRO.
Full frame may refer to: 35mm format; Full frame (cinematography) Full-frame type charge-coupled device (CCD) image sensor; See also ... additional terms may apply.