Digital video is an electronic representation of moving visual images (video) in the form of encoded digital data. This is in contrast to analog video, which represents moving visual images with analog signals. Digital video comprises a series of digital images displayed in rapid succession.
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed for mechanical television systems, which were quickly replaced by cathode ray tube (CRT) systems which were later replaced by flat panel displays of several types.
A camcorder is an electronic device originally combining a video camera and a videocassette recorder.
Enhanced-definition television, or extended-definition television (EDTV) is a Consumer Electronics Association (CEA) marketing shorthand term for certain digital television (DTV) formats and devices. Specifically, this term defines formats that deliver a picture superior to that of standard-definition television (SDTV) but not as detailed as high-definition television (HDTV).
HDV is a format for recording of high-definition video on DV cassette tape. The format was originally developed by JVC and supported by Sony, Canon, and Sharp. The four companies formed the HDV Consortium in September 2003.
XDCAM is a series of products for digital recording using random access solid-state memory media, introduced by Sony in 2003. Four different product lines – the XDCAM SD, XDCAM HD, XDCAM EX and XDCAM HD422 – differ in types of encoder used, frame size, container type and in recording media.
1080p is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen vertically; the p stands for progressive scan, i.e. non-interlaced. The term usually assumes a widescreen aspect ratio of 16:9, implying a resolution of 2.1 megapixels. It is often marketed as Full HD or FHD, to contrast 1080p with 720p resolution screens. Although 1080p is sometimes informally referred to as 2K, these terms reflect two distinct technical standards, with differences including resolution and aspect ratio.
TiVo digital video recorders encompass a number of digital video recorder (DVR) models that TiVo Corporation designed. Features may vary, but a common feature is that all of the units listed here require TiVo service and use its operating system.
AVCHD is a file-based format for the digital recording and playback of high-definition video. It is H.264 and Dolby AC-3 packaged into the MPEG transport stream, with a set of constraints designed around the camcorders.
V+ is a set-top box for Virgin Media's Virgin TV service, which provides personal video recording (PVR) and high definition (HD) functionality to customers who subscribe to the service. Virgin TV have taken a different approach from rival Sky's Sky+ and later Sky+ HD services, by implementing a rental scheme for the V+ Box. When Virgin TV was launched, there was an installation charge and a monthly charge for all customers with a discount for XL customers. On 1 June 2007 pricing was revised, with all customers paying a one-off set-up fee and TV M and L customers paid a monthly charge, while TV XL customers had no extra charges. Various deals to lower the set-up fee have been made available to all customers in order to compete with rival Sky.
Sony produces professional, consumer, and prosumer camcorders.
Netgear's Digital Entertainer line of products are digital media players that can pull multimedia content from home computers to the typical audio/video entertainment center. There are three products in the line, the EVA700, the HD EVA8000 and the current EVA9150 Digital Entertainer Elite. All support high definition video, the EVA700 via component output up to 1080i and the EVA8000/EVA9000 up to 1080p with both component and HDMI connectors. All models support audio, video, image and streaming audio and video formats and can be networked via wired and wireless Ethernet. The EVA700 is Intel Viiv certified.
The JVC GZ-MG555 camcorder, also known as the JVC GZ-MG575, was produced by JVC in 2007. It records standard definition MPEG-2 video onto either a built-in hard disk drive, or on a secure digital memory card in MOD format.
The Flip Video cameras are an American series of tapeless camcorders for digital video created by Pure Digital Technologies, a company bought by Cisco Systems in March 2009; variants included the UltraHD, the MinoHD, and the SlideHD. Flip Video cameras were known for their simple interface with few buttons, minimal menus and built in USB plugs, and were marketed as making video "simple to shoot, simple to share" Production of the line of Flip video cameras ran from 2006 until April 2011, when Cisco Systems discontinued them as part of a move to "...exit aspects of (their) consumer businesses." Flip cameras contributed to an increase in the popularity of similar pocket camcorders, although the inclusion of HD video cameras in many smartphones has since made them a more niche product.
MOD and TOD are recording formats for use in digital tapeless camcorders. The formats are comparable to XDCAM EX, HDV and AVCHD.
The Vado is any of a series of pocket video cameras developed and manufactured by Creative Labs. The original 640x480 VGA resolution Vado was first introduced in May 2008. A high-definition model, the Creative Vado HD was then made available in December 2008. Designed to be handheld and easily portable, the Vado series of pocket camcorders compete directly with similar devices such as the Flip Video and Sony Bloggie MHS-PM5.
Audio connectors and video connectors are electrical or optical connectors for carrying audio and video signals. Audio interfaces and video interfaces define physical parameters and interpretation of signals. For digital audio and digital video, this can be thought of as defining the physical layer, data link layer, and most or all of the application layer. For analog audio and analog video these functions are all represented in a single signal specification like NTSC or the direct speaker-driving signal of analog audio. Physical characteristics of the electrical or optical equipment includes the types and numbers of wires required, voltages, frequencies, optical intensity, and the physical design of the connectors. Any data link layer details define how application data is encapsulated. Application layer details define the actual audio or video format being transmitted, often incorporating a codecs not specific to the interface, such as PCM, MPEG-2, or the DTS Coherent Acoustics codec. In some cases, the application layer is left open; for example, HDMI contains an Ethernet channel for general data transmission.
The Zune HD is a portable media player in the Zune product family released on September 15, 2009 by Microsoft. It was a direct competitor with Apple's iPod touch series of mobile devices. It was initially released in 16 and 32 GB capacities. A 64 GB version was released on April 9, 2010. It has a touchscreen interface for navigation and included Wi-Fi for synchronization, access to the Zune Marketplace and Web browsing.
