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The DVD-VR standard defines a logical format for video recording on DVD-R, DVD-RW, and DVD-RAM style media, including the dual layer versions of these media. As opposed to media recorded with the DVD+VR recording standard, the resulting media are not DVD-Video compliant, and do not play back in some DVD-Video players.
The DVD+VR standard defines a logical format for DVD-Video compliant recording on optical discs. It is intended to be used on DVD+R and DVD+RW media. Most DVD video recorders in the market that support these two types of media also use the DVD+VR format for recording video on them.
VR mode or Video Recording mode is a feature on stand-alone consumer and computer DVD recorders that allows video recording and editing on a DVD rewritable disc. In VR mode, users can create and rename titles for the scenes. Also, if a scene is deleted, the space allocated by it will be utilized later without the need of reformatting a disc.
DVD recorders can use DVD-VR or DVD+VR format instead of DVD-Video. DVD-VR format store multiplexed audiovisual content in VRO containers. [37] [38] VRO file is an equivalent to a collection of DVD-Video VOB files. [39] Fragmented VRO files are not widely supported by hardware or software players and video editing software. [37]
However, these DVD recorders can still record analog audio and analog video. Standalone DVD recorders, alongside Blu-ray recorders, have been relatively scarce in the United States due largely to "restrictions on video recording" and piracy concerns. [2] [3] The first DVD recorders appeared on the market in 1999–2000. [4] [5]
The DVD specifications created and updated by the DVD Forum are published as so-called DVD Books (e.g. DVD-ROM Book, DVD-Audio Book, DVD-Video Book, DVD-R Book, DVD-RW Book, DVD-RAM Book, DVD-AR (Audio Recording) Book, DVD-VR (Video Recording) Book, etc.). [1] [2] [3] DVD discs are made up of two discs; normally one is blank, and the other ...
A digital video recorder (DVR), also referred to as a personal video recorder (PVR) particularly in Canadian and British English, is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device.
QuickTime VR, an image file format developed by Apple for panoramic images; Videocassette recorder, a device that records and plays back analog audio and video using magnetic tape; Voltage regulator, an electric circuit designed to maintain a constant voltage level; DVD-VR, an editable optical media format