High Definition Video (short HD video or HDV, English for High Definition video) is the generic term for high-resolution digital video formats. The term is - in addition to the current 3D technology - the current stage of development in video technology and supersedes since its introduction more and more from the well-established since the mid- 1990s, digital video standard.
From the beginning of the 21st century, the number of pixels photo function of these amateur camcorder rose in camcorders over the range that was necessary for the resolution of a PAL image ( cf. video camera ), mainly in demand caused by the customer, a high resolution requiring. According to high-resolution corrected lenses were also made necessary by the photo function. This was the basic technology for high-definition video cameras in principle already available and only had to be supplemented with an appropriate processor, which was able to perform a compression of images up to the degree that a storage of high-definition video on the previous DV cassette with the existing drives was possible. This could then be technically achieved by using the MPEG-2 compression, instead of the existing DV format.
Accordingly, such HDV cameras were already relatively inexpensive available shortly after launch, which contributed to its rapid spread. In contrast to the TV area where HDTV on hard time, HDV was in the consumer electronics and the prosumer segment quite successful, especially since all available at that time HDV camcorder additionally the " conventional " standard -definition digital video format ( SD DV, also in 16:9) dominated (downward compatible) what the " format switchers " very came to meet. The new development of professional pure SD DV cameras has been largely discontinued since 2006.
HDV does not comply with the maximum 1440x1080 "Full HD" resolution. This afford newly developed recording formats, including AVCHD, which is based on the H.264 codec. In addition, faster recording media such as hard disk drives ( HDD) or memory card, so even 1920 x 1080 pixels can be recorded natively.
From 2007 and 2008 reinforced a tendency showed, despite certain limitations in resolution, color space and cutting ability HDV1 to reposition broadcast and independent sector, since the technical progress improvements to the cameras allowed ( see, eg, above); Meanwhile, the European Broadcasting Union 720/50p has declared its broadcast format for HDTV. Therefore, 50P -enabled professional video cameras and editing systems are now widely used.
In amateur stock grows by the AVCHD format, a non- tape -based competition: the maximum of 24 Mbit / s data rate as would be theoretically the recording to DV tape and thus the simple archiving possible, but this is not provided. This " Full HD " camcorder (1920 x 1080 pixels) are exclusively equipped with hard disk drives or memory cards. Meanwhile appropriate graphic maps are also available in the amateur range available, so that a real-time processing is possible. Increasingly, provide an interface systems to this new constellation and go from the currently practiced method of software-based video processing in such complex procedures followed.
"HDV" is a video format for fine amateur and corporate claims, however briefly move into the professional broadcast segment held from cost considerations, exactly as it was at the time the case with DV. However, the technical quality is inferior to professional HD broadcast formats such as DVCPRO HD or HDCAM, their data rates are four or sixteen times as high and work with higher color sampling. One such advancement is XDCAM HD from Sony, the three different data rates of 18, 25, 35 Mbit / s and 50 Mbit / s ( XDCAM HD 422 ) works and is also based on an MPEG -2 codec.
4K2K is a digital high-definition video format, which is about four times HDTV resolution.
Ultra High Definition Television is a digital high-definition video format, which is about sixteen times HDTV resolution.