- For other uses, see DV (disambiguation).
'Digital Video (DV)' is a video format launched in 1996, and, in its smaller tape form factor MiniDV, has since become one of the standards for consumer and semiprofessional video production. The DV specification (originally known as the Blue Book, current official name IEC 61834) defines both the codec and the tape format. Features include intraframe compression for uncomplicated editing, a standard interface for transfer to non-linear editing systems (IEEE 1394/FireWire), and good video quality, especially compared to earlier consumer analog formats such as 8 mm, Hi-8 and VHS-C. DV now enables filmmakers to produce movies inexpensively, associated with no-budget cinema. Download high resolution version (954x1230, 165 KB)Photo taken my me Jan. ...
Download high resolution version (954x1230, 165 KB)Photo taken my me Jan. ...
DV may mean: DV - a Digital Video tape format DV - Diversity Immigrant Visa, frequently used with the number of year immigrants who won a particular edition are admitted into the United States (ex. ...
Video (from Latin, I see) is the technology of processing electronic signals for representing moving pictures. ...
1996 is a leap year starting on Monday of the Gregorian calendar, and was designated the International Year for the Eradication of Poverty. ...
The initials IEC can stand for: Independent Electoral Commission Industrial Emergency Council Inertial electrostatic confinement (in fusion energy) Institut des Experts-comptables et des Conseils fiscaux Institut dEstudis Catalans, Catalan Studies Institute Interactive Evolutionary Computation International Education Centre International Electrical Congress International Electrotechnical Commission See also IEC connector for...
Codec is a portmanteau of either Compressor-Decompressor or Coder-Decoder, which describes a device or program capable of performing transformations on a data stream or signal. ...
Note: Please see National Latin Examination for the standardized test that is also abbreviated NLE. A non-linear editing system is a video editing or audio editing system that can perform random access on the source material. ...
A 6-Pin Firewire 400 connector FireWire (also known as i. ...
A 6-Pin FireWire 400 connector FireWire (also known as i. ...
A professional grade EFP/ENG Hi8 camcorder An amateur grade Video8 Camcorder The 8mm video format (official names: Video8, later Hi8 and finally Digital8) is an analog video recording format for the NTSC and PAL/SECAM television systems. ...
A 8mm Camcorder The 8mm Video Format (official name: Video8) is a type of video cassette recorder and video tape. ...
VHS-C is the compact VHS format used for portable video recorders. ...
This article is being considered for deletion in accordance with Wikipedias deletion policy. ...
There have been some variants on the DV standard, most notably the more professional DVCAM and DVCPRO standards by Sony and Panasonic, respectively. Also, there is a recent high-definition version called HDV, which is rather different on a technical level since it only uses the DV and MiniDV tape form factor, but MPEG-2 for compression. Sony Corporation (Japanese katakana: ソニー) (TYO: 6758), NYSE: SNE is a global consumer electronics corporation based in Tokyo, Japan. ...
Panasonic is principal sponsor of the Toyota F1 team Panasonic is the global brand name for consumer electronics and other electric products manufactured by Matsushita Electric Industrial Co. ...
A Sony HDR-FX1 HDV camcorder High Definition Video (HDV) is a video format designed to record high-definition video on standard DV media (DV or MiniDV cassette tape). ...
MPEG-2 (1994) is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group), and published as the ISO/IEC 13818 international standard. ...
Technical Standards
Video compression DV uses DCT intraframe compression at a fixed bitrate of 25 megabits per second, which amounts to roughly 3.6 megabytes per second or 4 minutes per Gigabyte. At equal bitrates, DV performs somewhat better than the older MJPEG codec, and is comparable to intraframe MPEG-2. (Note that many MPEG-2 encoders for real-time acquisition applications do not use intraframe compression.) The discrete cosine transform (DCT) is a Fourier-related transform similar to the discrete Fourier transform (DFT), but using only real numbers. ...
In telecommunications and computing, bit rate (sometimes written bitrate) is the frequency at which bits are passing a given (physical or metaphorical) point. It is quantified using the bit per second (bit/s) unit. ...
The megabit is a unit of information storage, abbreviated Mbit or sometimes Mb. ...
This article is about a unit of data measurement. ...
This article is about the unit of measurement, for the computer hardware manufacturer see Gigabyte Technology. ...
Motion JPEG (M-JPEG) is a video codec where each video field is separately compressed into a JPEG image. ...
MPEG-2 (1994) is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group), and published as the ISO/IEC 13818 international standard. ...
Chroma subsampling The chroma subsampling is 4:1:1 for NTSC or 4:2:0 for PAL, which reduces the amount of color resolution stored. Therefore, not all analog formats are outperformed by DV. The Betacam SP format, for example, can still be desirable because it has similar color fidelity and no digital artifacts. The lower sampling of the color space is also a reason why DV is sometimes avoided in applications where chroma-key will be used. However, a large contingent feel the benefits (no generation loss, small format, digital audio) are an acceptable tradeoff given the compromise in color sampling rate. In digital image processing, chroma subsampling is the use of lower resolution for the colour (chroma) information in an image than for the brightness (intensity or luma) information. ...
This article needs to be cleaned up to conform to a higher standard of quality. ...
For other meanings of PAL see PAL (disambiguation). ...
Betacam and VHS size comparison Betacam SP L (top), Betacam SP S (left), VHS (right) Betacam is a family of half-inch professional videotape formats developed by Sony from 1982 onwards. ...
A sample refers to a value or set of values at a point in time and/or space. ...
A color model is an abstract mathematical model describing the way colors can be represented as tuples of numbers, typically as three or four values or color components (e. ...
This page is a candidate for speedy deletion, because: it is patent nonsense. ...
Generation loss refers to the loss of quality between copies, usually associated with magnetic audio and video media. ...
Digital audio describes sound recording and reproduction systems which work by using a digital representation of the audio waveform. ...
Audio DV allows either 2 digital audio channels (usually stereo) at 16 bit resolution and 48 kHz sampling rate, or 4 digital audio channels at 12 bit resolution and 32 kHz sampling rate. For professional or broadcast applications, 48 kHz is used almost exclusively. In addition, the DV spec includes the ability to record audio at 44.1 kHz (the same sampling rate used for CD audio), although in practice this option is rarely used. DVCAM and DVCPRO both use locked audio while standard DV does not. This means that at any one point on a DV tape the audio may be +/- 1/3 frame out of sync with the video. This is the maximum drift of the audio/video sync though it is not compounded throughout the recording. In DVCAM and DVCPRO recordings the audio sync is permanently linked to the video sync. In popular usage, stereo generally to dual-channel sound recording and sound reproduction – sound that contains data for more than one speaker simultaneously. ...
The sampling frequency or sampling rate defines the number of samples per second taken from a continuous signal to make a discrete signal. ...
Connectivity The FireWire (aka IEEE 1394) serial data transfer bus is not a part of the DV specification, but co-evolved with it. Nearly all DV cameras have a IEEE 1394 interface and analog composite video and Y/C outputs. High end DV VCRs may have additional professional outputs such as SDI, SDTI or analog component video. All DV variants have a timecode, but some older or consumer computer applications fail to take advantage of it. Composite video is the format of an analog television (picture only) signal before it is combined with a sound signal and modulated onto an RF carrier. ...
S-Video (also known as Y/C) is a baseband analog video format offering a higher quality signal than composite video, but a lower quality than RGB and component video. ...
The video cassette recorder (or VCR, less popularly video tape recorder) is a type of video tape recorder that uses removable cassettes containing magnetic tape to record audio and video from a television broadcast so it can be played back later. ...
Serial Digital Interface (SDI), standardized in ITU-R 656, is a digitized video format used for broadcast grade video. ...
Serial Data Transport Interface (SMPTE 305M) is a way of transmitting data packets over a SDI datastream. ...
three RCA cables form the component video Component video is a type of analog video information that is transmitted or stored as two or more separate signals (as opposed to composite video, such as NTSC or PAL, which is a single signal). ...
Timecode is also the title of a 2000 film directed by Mike Figgis which was shot in one continuous take. ...
On computers, DV streams are usually stored in container formats such as AVI or QuickTime, but sometimes raw DV data is recorded directly. Edward Irving Wortis (born December 23, 1937), better known by the pen name Avi, is a prominent American author of childrens books and a winner of the Newbery Honor and Newbery Medal. ...
QuickTime is a multimedia technology developed by Apple Computer, capable of handling various formats of digital video, sound, text, animation, music, and immersive virtual reality panoramic images. ...
Physical format
 DV cassettes Left to right: DVCAM-L, DVCPRO-M, MiniDV The DV format uses "L-size" cassettes, while MiniDV cassettes are called "S-size". Both MiniDV and DV tapes can come with a low capacity embedded memory chip (a scant 4 Kbits for MiniDV cassettes). This embedded memory can be used to quickly sample stills from edit points (for example, each time the record button on the camcorder is pressed when filming, a new "scene" timecode is entered into memory). DVCPRO has no "S-size", but an additional "M-size" as well as an "XL-size" for use with DVCPRO HD VTRs. All DV variants use a tape that is 1/4 inch (6.35 mm) wide. Download high resolution version (1606x1164, 301 KB) Wikipedia does not have an article with this exact name. ...
Download high resolution version (1606x1164, 301 KB) Wikipedia does not have an article with this exact name. ...
Mid-19th century tool for converting between different standards of the inch An inch is an Imperial and U.S. customary unit of length. ...
A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ...
MiniDV / DV The "L" cassette is about 120 x 90 x 12 mm and can record up to 4.6 hours of video (6.9 hours in EP/LP). The better known MiniDV tapes are 65 x 48 x 12 mm and hold either 60 or 90 minutes of video depending on whether the video is recorded at Standard Play (SP) or Extended Play (sometimes called Long Play) (EP/LP). 80 minute tapes are also available and can record 120 minutes of video in EP/LP mode. The tapes sell for less than USD 5 each as of 2003. DV on SP has a helical scan track width of 10 micrometres, while EP uses a track width of only 6.7 micrometres. A MiniDV tape Digital Video (DV) is a video format launched in 1996, which encodes video onto tape in digital format with intraframe compression, making it straightforward to transfer the video onto computer for editing. ...
2003 is a common year starting on Wednesday of the Gregorian calendar. ...
Helical Scan, or striping is a method of recording higher bandwidth signals onto magnetic tape than would otherwise be possible at the same tape speed with fixed heads. ...
A micrometre (American spelling: micrometer), symbol µm, is an SI unit of length. ...
Software is currently available for ordinary home computers which allows users to record any sort of computer data on MiniDV cassettes using common DV decks or camcorders. A 60-minute MiniDV tape will hold approximately 13 Gigabytes of data in this form of usage as the DV video format has a constant data rate of 3.6 Megabytes per second (3.6 MB/s x 60 seconds x 60 minutes = 12,960 MB per hour = 12.9 GB per hour). This article is about the unit of measurement, for the computer hardware manufacturer see Gigabyte Technology. ...
DVCAM Sony's DVCAM is a semiprofessional variant of the DV standard that uses the same cassettes as DV and MiniDV, but transports the tape 50% faster, leading to a higher track width of 15 micrometres. The codec used is the same as DV, but because of the greater track width available to the recorder the data is much more robust, producing 50 % less errors know as dropouts. The LP mode of DV is not supported. All DVCAM recorders and cameras can play back DV material, but DVCPRO support was only recently added to some models. DVCAM tapes (or DV tapes recorded in DVCAM mode) have their recording time reduced by one third.
DVCAM is now also available in HD mode.
DVCPRO Panasonic's specifically created the DVCPRO family for ENG use (NBC's newsgathering division was a major customer), with better linear editing capabilities and robustness. It has an even greater track width of 18 micrometres and uses another tape type (Metal Particle instead of Metal Evaporated). Additionally, the tape has a longitudinal analog audio cue track. Audio is only available in the 16 bit/48 kHz variant, there is no EP mode, and DVCPRO always uses 4:1:1 color subsampling (even in PAL mode). Apart from that, standard DVCPRO (also known as DVCPRO25) is otherwise identical to DV at a bitstream level. However, unlike Sony, Panasonic chose to promote its DV variant for professional high-end applications. This article is about the Latin letter. ...
The National Broadcasting Company or NBC is an American radio and television broadcasting company based in New York Citys Rockefeller Center. ...
Linear video editing is the process of selecting, arranging and modifying the images and sound recorded on video tape whether captured by a video camera or recorded in a studio. ...
DVCPRO50 is often described as two DV-codecs in parallel. The DVCPRO50 standard doubles the coded video bitrate from 25 Mbit/s to 50 Mbit/s, and improves color-sampling resolution by using a 4:2:2 structure. DVCPRO50 was created for high-value ENG compatibility. The higher datarate cuts recording-time in half (compared to DVCPRO25), but the resulting picture-quality is reputed to rival Digital Betacam, a more expensive studio format.
DVCPRO HD, also known as DVCPRO100, uses four parallel codecs and a coded video bitrate of 100 Mbit/s. Despite HD in its name, DVCPROHD downsamples native 720p/1080i signals to a lower resolution. 720p progressive is downsampled from 1280x720 to 960x720, and 1080i interlaced is downsampled from 1920x1080 to 1280x1080. Compression ratio is approximately 7:1. To maintain compatibility with HDSDI, DVCPRO100 equipment internally downsamples video during recording, and subsequently upsamples video during playback. A camcorder using as special variable-framerate (from 4 to 60 fps) variant of DVCPRO HD called VariCam is also available. All these variants are backward compatible but not forward compatible. Serial Digital Interface (SDI), standardized in ITU-R 656, is a digitized video format used for broadcast grade video. ...
In technology (especially computing), backward compatibility has several related but differing meanings: A system is backward compatible if it is compatible with earlier versions of itself, or sometimes other earlier systems, particularly systems it intends to supplant. ...
Forward compatibility is the ability of a system to accept input from later versions of itself. ...
DVCPRO cassettes are always labeled with a pair of run times, the smaller of the two being the capacity for DVCPRO50. A "M" tape can hold up to 66/33 minutes of video. The color of the lid indicates the format: DVCPRO tapes have a yellow lid, longer "L" tapes made specially for DVCPRO50 have a blue lid and DVCPRO HD tapes have a red lid.
The DVCPRO VCRs can play (but not record) DV and DVCAM tapes. MiniDV tapes can be played with a cassette-adaptor.
Other variants Sony's XDCAM format allows recording of DVCAM streams on an optical medium similar to a Blu-Ray Disc, while Panasonic's DVCPRO P2 uses recording of DV/ DVCPRO/ DVCPRO50/ DVCPROHD streams on PCMCIA-compatible flash memory cards. Ikegami's Editcam System can record in DVCPRO or DVCPRO50 format on a removable hard disk. Note that most of these distinctions are for marketing purposes only - since DVCPRO and DVCAM only differ in the method in which they write the DV stream to tape, all these non-tape formats are virtually identical in regard to the video data. XDCAM is a professional digital camera system introduced by Sony in 2003. ...
Blu-ray Disc (BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
DVCPRO P2 is a professional digital video format introduced by Panasonic in 2004, and especially tailored to ENG applications. ...
The PCMCIA is the Personal Computer Memory Card International Association, an industry trade association that creates standards for notebook computer peripheral devices. ...
A USB Flash Memory Card Flash memory is a form of EEPROM that allows multiple memory locations to be erased or written in one programming operation. ...
Ikegami () is a japanese manufacturer of professional and broadcast television equipment, most notably professional video cameras, both for ENG and studio use. ...
Editcam is a professional digital camera system manufactered by Ikegami and first introduced in 1995, available both as professional camcorders and modular dock recorders. ...
Typical hard drives of the mid-1990s. ...
Traditionally, Marketing is the process or act of bringing together buyers and sellers. ...
JVC's D-9 format (also known as Digital-S) is very similar to DVCPRO50, but records on videocassettes in the S-VHS form factor. (NOTE: D-9 is not to be confused with D-VHS, which uses MPEG-2 compression at a significantly lower bitrate) The Victor Company of Japan, or Japan Victor Company, JVC, is a large international corporation with its headquarters in Yokohama, Japan, which produces audio, video, and consumer electronics products. ...
Introduced in Japan in 1987, S-VHS (Super VHS) was an improved, version of the VHS standard for consumer video cassette recorders. ...
D-VHS is a digital video format developed by JVC, in collaboration with Hitachi, Matsushita and Philips. ...
MPEG-2 (1994) is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group), and published as the ISO/IEC 13818 international standard. ...
The Digital8 standard uses the DV codec, but replaces the recording medium with the venerable Hi8 videocassette. Digital8 offers DV's digital quality, without sacrificing playback of existing analog Video8/Hi8 recordings. Digital8 (or D8) is a consumer digital videotape format developed by Sony in the late 1990s. ...
Codec is a portmanteau of either Compressor-Decompressor or Coder-Decoder, which describes a device or program capable of performing transformations on a data stream or signal. ...
A 8mm Camcorder The 8mm Video Format (official name: Video8) is a type of video cassette recorder and video tape. ...
See also 8mm Camcorder mini-DV Camcorder Sony DV Handycam A camcorder is a portable electronic device (generally a digital camera) for recording video images and audio onto a storage device. ...
A Sony HDR-FX1 HDV camcorder High Definition Video (HDV) is a video format designed to record high-definition video on standard DV media (DV or MiniDV cassette tape). ...
ProHD is JVCs extension of the HDV video format, and adds provision for 24p (24 frames per second, progressive scan. ...
MicroMV is a new videotape format by Sony. ...
The Moving Picture Experts Group or MPEG is a working group of ISO/IEC charged with the development of video and audio encoding standards. ...
DVD is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ...
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