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使用存储卡记录的全高清产品系列开创高清制作新纪元
2007年,Sony推出了具有革命性意义的XD-CAM EX手持式摄录一体机PMW-EX1,采用了尖端技术,如三片1/2英寸全高清Exmor CMOS成像器,惊人的和高清记录能力。PMW-EX1使用存储卡记录,其外形非常小巧,这款产品是凭借在革命性的CineAlta系列产品中取得的成功经验和尖端技术研制而成。PMW-EX1以其极高质量的画面,优异的灵活性和高效的可操作性,在多种高清节目制作和数字电影拍摄领域中得到了广泛应用。近期,Sony XDCAM EX产品线又有了新成员PMW-EX3存储卡摄录一体机和PMW-EX30存储卡录像机。PMW-EX3采用了1/2英寸可换镜头系统,可使用多种类型镜头,包括1/2英寸、2/3英寸的电视镜头以及电影镜头和照相机镜头,为制作人员带来更强的创造性和灵活性。PMW-EX30录像机体积非常紧凑,可使用在记录、浏览、复制,以及非编上载等多种应用中。PMW-EX3存...&
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本刊讯8月6日,腾博“2009全新高清产品巡回展”首站在北京隆重召开。本次巡回展重点展出腾博全线高清视频通讯产品和解决方案,为各行业企业带来良好的全高清体验。此次巡展,...&
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作为上海一家老牌的安防厂家,上海申得安科技有限公司一直因DVR而在区域内小有名气,今年的上海展会上,申得安全系列网络高清产品又一次闪亮登场。申得安总经理朱卫东告诉记者,经过调研认为目前国内已经具备实现高清的环境,编码能力基本能够得到满足高清需求,外部的网络带宽和存储容量也基本能够满足高清应用。另外,从标清改造到高清,其成本上计算,如果前后端总体配合好,总体构架成本基本接近高端模拟。因而,经过两年半的研发测试准备,今年推出全系列的网络高清产品,年底所有网络高清产线将全部量产。申得安推出的数字高清监控产品主要包括7...&
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近日,亚安高清系列产品全面参与天津市第一中级人民法院数字法庭的建设,此项工程于日前圆满落成。亚安高清系列产品在天津市第一中级人民法院各民事、刑事案件庭,办公楼内、外精密布控,将法院审判过程中所有视频、音频、电子证物等信息多画面显示的方式进行实时采集、录制,方便相关人员直观全面地了解案件审理情况,进一步提高审判信息的利用程度,积累司法信息资源,并通过局域网、法院专网平台上...&
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京公网安备75号From Wikipedia, the free encyclopedia
XDCAM is a series of products for
media, introduced by
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
allowing XDCAM discs to be used within a traditional -based workflow. These decks can also serve as
for easy import of the video data files into
(NLE) via FireWire () and .
In September 2008,
announced its alliance with Sony to support the XDCAM EX format.
In August 2009, Convergent Design began shipping the nanoFlash Portable Recorder, which uses the Sony XDCAM HD422 codec.
In November 2012, VITEC began shipping the FS-T2001 Portable Recorder, which uses Sony XDCAM HD422 and XDCAM HD codec.
The XDCAM format uses multiple
methods and
Video is recorded with ,
compression schemes. DV is used for
video, MPEG-2 is used both for standard and high definition video, while MPEG-4 is used for proxy video.
Audio is recorded in uncompressed
form for all formats except proxy video, which uses A-Law compression.
Equipment that uses
as well as XDCAM 4:2:2 on SxS cards as recording media employs
container to store / streams.
that record onto
cards, use MP4 container for high definition audio/video, and DV-AVI container for DV video. JVC camcorders that use XDCAM EX recording format, are also capable of recording into QuickTime container besides using MP4 container.
uses standard
encoding, which runs at 25 Mbit/s, and is compatible with most editing systems. Some camcorders that allow DVCAM recording can record progressive-scan video.
allows recording in standard definition, using
encoding at data rate of 30, 40 or 50 Megabits per second. Unlike most other MPEG-2 implementations, IMX uses
compression with each frame having the same exact size in bytes to simplify recording onto video tape. Sony claims that at 50 Mbit/s it offers visual quality that is comparable to
MPEG IMX is not supported in the XDCAM EX product line.
MPEG HD is used in all product lines except for XDCAM SD. This format supports multiple frame sizes, frame rates, scanning types and quality modes. Depending on product line or a particular model, not all modes of this format may be available.
MPEG HD422 doubles the chroma-resolution compared to the previous generations of
XDCAM formats. To accommodate the improved chroma detail, video bitrate has been increased to 50 Mbit/s. This format is used only in XDCAM HD422 products.
Proxy AV is used to record low resolution proxy videos. This format employs
video encoding at 1.5 Mbit/s ( resolution) with 64 kbit/s (8 kHz , ISDN Quality) for each audio channel.
Format name
Video coding
Color sampling
Frame size
Frame rate and scanning type
Video bit rate, Mbit/s
Audio coding
PCM 4 ch/16 bit/48 kHz
29.97i, 29.97p
MPEG-2 422P@ML
30 (CBR), 40 (CBR), 50(CBR)
PCM 8 ch/16 bit/48 kHz,
or 4 ch/24 bit/48 kHz
29.97i, 29.97p, 23.98p
MPEG-2 MP@H14/HL
29.97i, 25i, 29.97p, 25p, 23.98p
PCM 4 ch/16 bit/48 kHz
29.97i, 29.97p, 23.98p, 25p
18 (VBR), 25 (CBR), 35 (VBR)
59.94p, 29.97p, 23.98p, 50p, 25p
25 (CBR), 35 (VBR), 19 (CBR)
MPEG HD422
MPEG-2 422P@HL
29.97i, 25i, 29.97p, 25p, 23.98p
PCM 8 ch/24 bit/48 kHz,
or 4 ch/24 bit/48 kHz
59.94p, 50p, 23.98p
MPEG-4 Part-2 (ASP)
CIF (50i - 352x288)
A-Law 4 ch/8 bit/8 kHz
1 720p @ 19 Mbit/s is offered by JVC and is equivalent to HDV 720p
Professional Disc
Main article:
The Professional Disc was chosen by Sony as its medium for professional non-linear video acquisition for a number of reasons, outlined in their white-paper . This disc is similar to
and holds either 23 GB of data (PFD23, single-layer, rewritable), 50 GB (PFD50, dual-layer, rewritable), 100GB (PFD100TLA, triple-layer, rewritable) or 128 GB (PFD128QLW, quad-layer, write-once).
Essentially, the Professional Disc format was deemed to be a suitable, cost effective and easy step forward. The discs are reliable and robust, suitable for field work (something which has previously been a problem with many disc-based systems). Additionally, the cost of media is comparable to existing professional formats.
SxS memory card
Main article:
In 2008 Sony introduced a new recording medium to their XDCAM range – SxS Pro (pronounced "S-by-S"). It is a
card implemented as an
module. The first camera to use this media was the Sony
In December 2009, Sony introduced the more affordable SxS-1. This unit is designed to have the same performance as the SxS Pro card however its life expectancy is shorter at an estimated 5 years of life when used every day to the card's full capacity.
In early 2013, Sony will be introducing SxS Pro+ cards. These will have a 1.2Gbit/s read and write speed to support the PMW-F55 in storing 4K 60P acquisition.
Main article:
Memory Stick cards can be used in Sony XDCAM EX camcorders via the MEAD-MS01 adapter.
Main article:
SDHC memory cards
Secure Digital memory cards can be used in Sony XDCAM EX camcorders via the MEAD-SD01 adapter. JVC camcorders that record in XDCAM EX format use Secure Digital memory cards natively.
Main article:
XQD memory cards can be used in Sony XDCAM EX camcorders via the QDA-EX1 ExpressCard adapter.}