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The following other wikis use this file: Usage on ar.wikipedia.org أسطوانات الفيديو الرقمية فائقة الدقة; Usage on bjn.wikipedia.org
Dimensions indicated are track pitch (p), pit width (w) and minimum length (l), and laser spot size (⌀) and wavelength (λ). For comparison with analogue media, the pitch of the spiral of a 240-groove-per-inch long-playing record and a Laserdisc are 106 μm (66 times the CD track pitch) and 4.6 μm (2.9 times), respectively. [1]
WebM is an audiovisual media file format. [5] It is primarily intended to offer a royalty-free alternative to use in the HTML video and the HTML audio elements. It has a sister project, WebP, for images.
HD DVD-RW is the rewritable disc variant of HD DVD with equal storage capacity to an HD DVD-R. The primary advantage of HD DVD-RW over HD DVD-R is the ability to erase and rewrite to an HD DVD-RW disc, up to about 1,000 times before needing replacement, making them comparable with the CD-RW and DVD-RW standards.
Photo CD images are stored as a hierarchy of components ranging from Base/16 to 64Base which relate to the varying image resolutions that can be reconstructed. [27] The Base image, which has a luma resolution of 512 lines by 768 pixels, is typically used for the TV systems. The higher-resolution images are usually used for photographic imaging.
HD DVD's Standard Content is a minor change from standard DVD's subpicture technology, while Blu-ray's BDMV is completely new. This makes transitioning from standard DVD to Standard Content HD DVD relatively simple [citation needed] —for example, Apple's DVD Studio Pro has supported authoring Standard Content since version 4.0.3.
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Since the size of the user-data portion of a sector (logical sector) in data optical discs is 2,048 bytes, the size of an ISO image will be a multiple of 2,048. Any single- track CD-ROM , DVD or Blu-ray disc can be archived in ISO format as a true digital copy of the original.