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HDV
HDV is a format for recording of high-definition video on DV (video format), DV videocassette Videotape, tape. Conceived as an affordable high definition format for digital camcorders, HDV quickly caught on with many amateur and professional videographers due to its low cost, portability, and image quality acceptable for many professional productions. The format was marketed mainly in the mid and late 2000s. HDV and HDV logo are trademarks of JVC and Sony. History The format was originally developed by JVC and supported by Sony, Canon Inc., Canon, and Sharp Corporation, Sharp. The four companies formed the HDV Consortium in September 2003. JVC released its latest HDV camcorder — the GY-HD250 — in 2006. In September 2011 this model was discontinued on the U.S. market. The "B" modification of the older GY-HD200 was released in 2008 and discontinued in November 2009. The latest HDV camcorder made by Canon — the HV40 — was released in 2009, but it traces back to the HV20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon HV30
This is a list of camcorders Manufacturing, manufactured under the Canon (company), Canon brand. Canon Cinema EOS digital camcorders *Canon EOS-1D C *Canon EOS C70 *Canon EOS C80 *Canon EOS C100 *Canon EOS C100 Mark II *Canon EOS C200, Canon EOS C200/C200B *Canon EOS C300 *Canon EOS C300 Mark II *Canon EOS C300 Mark III *Canon EOS C400 *Canon EOS C500 *Canon EOS C500 Mark II *Canon EOS C700 Professional digital camcorders *Canon XM1 (September 1999) (known in North America as the "Canon GL1") *Canon XA10 (March 2011) (HF G10 plus top handle) *Canon XA20 (June 2013) (HF G30 plus top handle) *Canon XA25 (June 2013) (XA20 plus HD-SDI output, otherwise the same camera) *Canon XA30 (November 2015) (HF G40 plus top handle) *Canon XA35 (November 2015) (XA30 plus HD-SDI output, otherwise the same camera) *Canon XA11 (December 2017) (HF G21 plus top handle) *Canon XA15 (December 2017) (XA11 plus HD-SDI output, otherwise the same camera) *Canon XA40 (April 2019) (HF G50 plus top handle) *C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon HV20
This is a list of camcorders manufactured under the Canon brand. Canon Cinema EOS digital camcorders * Canon EOS-1D C * Canon EOS C70 * Canon EOS C80 * Canon EOS C100 * Canon EOS C100 Mark II * Canon EOS C200/C200B * Canon EOS C300 * Canon EOS C300 Mark II * Canon EOS C300 Mark III * Canon EOS C400 * Canon EOS C500 * Canon EOS C500 Mark II * Canon EOS C700 Professional digital camcorders *Canon XM1 (September 1999) (known in North America as the "Canon GL1") *Canon XA10 (March 2011) (HF G10 plus top handle) *Canon XA20 (June 2013) (HF G30 plus top handle) *Canon XA25 (June 2013) (XA20 plus HD-SDI output, otherwise the same camera) *Canon XA30 (November 2015) (HF G40 plus top handle) *Canon XA35 (November 2015) (XA30 plus HD-SDI output, otherwise the same camera) *Canon XA11 (December 2017) (HF G21 plus top handle) *Canon XA15 (December 2017) (XA11 plus HD-SDI output, otherwise the same camera) *Canon XA40 (April 2019) (HF G50 plus top handle) *Canon XA45 (April 2019) (XA40 plus H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DV (video Format)
DV (from ''Digital Video'') is a family of codecs and Videotape, tape formats used for storing digital video, launched in 1995 by a consortium of camcorder, video camera manufacturers led by Sony and Panasonic. It includes the recording or cassette formats DV, MiniDV, HDV, DVCAM, DVCPro, DVCPro50, DVCProHD, Digital8, and Digital-S. DV has been used primarily for video recording with camcorders in the amateur and professional sectors. DV was designed to be a standard for home video using digital data instead of Analog video, analog. Compared to the analog 8 mm video format, Video8/Hi8, VHS-C and VHS formats, DV features a higher video resolution (on par with professional-grade Digital Betacam); it records uncompressed 16-bit Pulse-code modulation, PCM audio like Compact Disc Digital Audio, CD. The most popular tape format using a DV codec was MiniDV; these cassettes measured just 6.35 mm/¼ inch, making it ideal for video cameras and rendering older analog formats obsolete. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ProHD
ProHD is a name used by JVC for its MPEG-2-based professional camcorders. ProHD is not a video recording format, but rather "an approach for delivering affordable HD products" and a common name for "bandwidth efficient professional HD models". Originally ProHD lineup consisted of shoulder mount HDV 720p camcorders and offered 24-frame/s progressive video recording and LPCM audio recording/playback. It is a common misconception that JVC developed ProHD as a proprietary extension to HDV. JVC has stressed that 24-frame/s video and LPCM audio have always been part of the HDV format, but at the time they were initially offered no other HDV camcorder had them. The company went to great lengths to promote the format as an appropriate solution for professional high definition video production. In 2009 JVC expanded the ProHD lineup with tapeless camcorders that record MPEG-2 video either in QuickTime QuickTime (or QuickTime Player) is an extensible multimedia architecture cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camcorder
A camcorder is a self-contained portable electronic device with video and recording as its primary function. It is typically equipped with an articulating screen mounted on the left side, a belt to facilitate holding on the right side, hot-swappable battery facing towards the user, hot-swappable recording media, and an internally contained quiet optical zoom lens. The earliest camcorders were tape-based, recording analog signals onto videotape cassettes. In the 2000s, digital recording became the norm, and additionally tape was replaced by storage media such as mini- HDD, MiniDVD, internal flash memory and SD cards. More recent devices capable of recording video are camera phones and digital cameras primarily intended for still pictures, whereas dedicated camcorders are often equipped with more functions and interfaces than more common cameras, such as an internal optical zoom lens that is able to operate silently with no throttled speed, whereas cameras with protract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Progressive Segmented Frame
Progressive segmented Frame (PsF, sF, SF) is a scheme designed to acquire, store, modify, and distribute progressive scan video using interlaced equipment. With PsF, a progressive frame is divided into two ''segments'', with the odd lines in one segment and the even lines in the other segment. Technically, the segments are equivalent to interlaced ''fields'', but unlike native interlaced video, there is no motion between the two fields that make up the video frame: both fields represent the same instant in time. This technique allows for a progressive picture to be processed through the same electronic circuitry that is used to store, process and route interlaced video. The term ''progressive segmented frame'' is used predominantly in relation to high-definition video, high definition video. In the world of standard-definition video, which traditionally has been using interlaced scanning, it is also known as ''quasi-interlace'', ''progressive recording'' or ''movie mode''. Other na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AVCHD
AVCHD (Advanced Video Coding High Definition) 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 camcorders. Developed jointly by Sony and Panasonic, the format was introduced in 2006 primarily for use in high definition consumer camcorders. Related specifications include the professional variants AVCCAM and NXCAM. Favorable comparisons of AVCHD against HDV and XDCAM, XDCAM EX solidified perception of AVCHD as a format acceptable for professional use. Both Panasonic and Sony released the first consumer AVCHD camcorders in spring of 2007. Panasonic released the first AVCHD camcorder aimed at the professional market in 2008, though it was nothing more than the (by then discontinued) Flash memory, FLASH card consumer model rebadged with a different model number. In 2011 the AVCHD specification was amended to include 1080-line 50-frame/s a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MPEG-1 Layer 2
MP2 (formally MPEG-1 Audio Layer II or MPEG-2 Audio Layer II, sometimes incorrectly called Musicam) is a lossy audio compression format. It is standardised as one of the three audio codecs of MPEG-1 alongside MPEG-1 Audio Layer I (MP1) and MPEG-1 Audio Layer III (MP3). The MP2 abbreviation is also used as a common file extension for files containing this type of audio data, or its extended variant MPEG-2 Audio Layer II. MPEG-1 Audio Layer II was developed by Philips, CCETT and IRT as the MUSICAM algorithm, as part of the European-funded Digital Audio Broadcasting (DAB) project. Alongside its use on DAB broadcasts, the codec has been adopted as the standard audio format for Video CD and Super Video CD media, and also for HDV. On the other hand, MP3 (which was developed by a rival collaboration led by Fraunhofer Society called ASPEC) gained more widespread acceptance for PC and Internet applications. MP2 compresses less than MP3, but therefore also has less computational demands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-definition Video
High-definition video (HD video) is video of higher resolution and quality than standard-definition. While there is no standardized meaning for ''high-definition'', generally any video image with considerably more than 480 vertical scan lines (North America) or 576 vertical lines (Europe) is considered high-definition. 480 scan lines is generally the minimum even though the majority of systems greatly exceed that. Images of standard resolution captured at rates faster than normal (60 frames/second North America, 50 fps Europe), by a high-speed camera may be considered high-definition in some contexts. Some television series shot on high-definition video are made to look as if they have been shot on film, a technique which is often known as filmizing. History The first electronic scanning format, 405 lines, was the first ''high definition'' television system, since the mechanical systems it replaced had far fewer. From 1939, Europe and the US tried 605 and 441 lines until, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Videotape
Videotape is magnetic tape used for storing video and usually Sound recording and reproduction, sound in addition. Information stored can be in the form of either an analog signal, analog or Digital signal (signal processing), digital signal. Videotape is used in both video tape recorders (VTRs) and, more commonly, videocassette recorders (VCRs) and camcorders. Videotapes have also been used for storing scientific or medical data, such as the data produced by an electrocardiogram. Because video signals have a very high Bandwidth (signal processing), bandwidth, and Tape head, stationary heads would require extremely high tape speeds, in most cases, a helical scan, helical-scan video head rotates against the moving tape to record the data in two dimensions. Tape is a Linear motion, linear method of storing information and thus imposes delays to access a portion of the tape that is not already against the heads. The early 2000s saw the introduction and rise to prominence of high-q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XDCAM
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. None of the later products have made earlier product lines obsolete. Sony maintains that different formats within XDCAM family have been designed to meet different applications and budget constraints. The XDCAM range includes cameras and decks which act as drop-in replacements for traditional VTRs allowing XDCAM discs to be used within a traditional videotape-based workflow. These decks can also serve as random access computer hard drives for easy import of the video data files into non-linear editing systems (NLE) via FireWire (IEEE 1394) and Ethernet. In September 2008, JVC announced its alliance with Sony to support the XDCAM EX format. In August 2009, Convergent Desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chroma Subsampling
Chroma subsampling is the practice of encoding images by implementing less resolution for Chrominance, chroma information than for luma (video), luma information, taking advantage of the human visual system's lower acuity for color differences than for luminance. It is used in many video and still image encoding schemesboth analog and digitalincluding in JPEG encoding. Rationale Digital signals are often compressed to reduce file size and save transmission time. Since the human visual system is much more sensitive to variations in brightness than color, a video system can be optimized by devoting more bandwidth to the luma (video), luma component (usually denoted Y'), than to the color difference components Cb and Cr. In compressed images, for example, the 4:2:2 Y'CbCr scheme requires two-thirds the bandwidth of non-subsampled "4:4:4" R'G'B'. This reduction results in almost no visual difference as perceived by the viewer. How subsampling works The Visual perception, human vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
