Hd Television Understanding Hdv Recording

By: XC

Understanding the benefits of HDTV over previous analogue TVs and SD, or standard definition, sets can help you make the right decision about which TV you should choose. Theres been real growth in consumer demand over the last decade for HDTVs, which is mostly to do with the allure of satellite television. Digital broadcasting was first introduced on satellite TV, with the original Digital Video Broadcasting, or DVB, platform being used to pave the way for digital TV broadcasting.

Todays broadcasters and producers use different video codecs and formats to record and capture video for HD content. Many codecs that have been produced by manufacturers have been contending for the supremacy of standard digital video codec. These codecs include Microsoft's Windows Media 9(VC1), H.264/AVC (MPEG-4 Part 10) and the VP6/VP7 codecs from On2 Technologies. Another common standard format used by some camcorders is the HDV, or High Definition Video, format.

HDV is used as standard for a lot of consumer HDTV recording. The HDV codec and format record MPEG-2 TS, which is compressed high-definition video on typical and proprietary DV media. These mediums include normal digital video, also known as DV, and MiniDV tapes. HDV is recorded and transferred directly using FireWire. Most HD camcorders have a maximum resolution of 1440 x 1080i, or 1080 lines, of interlaced scanning. The recorded images on HDV are stretched from the standard 4:3 aspect ratio into the 16:9 aspect ratio. However, HDV camcorders that record in the 1440 x 1080 format will stretch to a full horizontal resolution of 1920 pixels per line.

Even some broadcast-level HD camcorders and professional cameras can record HDV directly onto hard drives, or transfer cards in full raw input, which creates a higher bit-rate recording. These HDV tapes and flash cards support the format and can record at speeds of up 100Mbit per second. There are some DV tapes such as the DVC Pro HD that can record in a format close to this, but the digital media allows for faster recording and content transfer. Also, the content recorded on HDV media in uncompressed color compression, often provides a better color compression method, giving a higher color representation than a standard MiniDV or other DV25 tapes.

Digital broadcasting produces a better picture quality that removes the grain and noise, as well as the poor signal viewing that was found on SD television. Picture quality is top notch now and with formats such as the HDV format, content can be displayed with more clarity on an HDTV.

About the Author:
Understanding the benefits of HDTV over previous analogue TVs and SD, or standard definition, sets can help you make the right decision about which TV you should choose. Theres been real growth in consumer demand over the last decade for HDTVs, which is mostly to do with the allure of satellite television. Digital broadcasting was first introduced on satellite TV, with the original Digital Video Broadcasting, or DVB, platform being used to pa

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