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Re: Where to find more info on HDV specs?

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Suzanne EverettRe: Where to find more info on HDV specs?
by on Feb 14, 2004 at 1:34:54 pm

the main characteristics and specs are;


1) Ability to record and play back high-definition video on internationally accepted DV format cassette tapes

2) Adoption of 720p/1080i formats to comply with progressive and interlace specifications for high- definition recording and playback
The HDV format complies with both the 720 scanning lines (progressive)/1280 horizontal pixels 720p format (60p, 30p, 50p, 25p), and the 1080 scanning lines (interlace)/1440 horizontal pixels 1080i format (60i, 50i). This ensures the recording and playback of high-resolution video for the high-definition era.

3) Improved error correction
By changing the error correction method from error correction within a track, as specified in the DV-SD format, to error correction among multiple tracks, the HDV format offers improved error correction capability and enhanced resistance to lost data caused by dropout.

4) Data for special playback
Video signals compressed by MPEG encoding do not support image display during special playback such as fast search. The HDV format records specific data for special playback on a dedicated tape, enabling the display of video images during special playback such as fast search or slow-motion playback.
(Video image quality during special playback will differ from that during normal playback.)



Media Same as DV format (DV and/or Mini DV cassette tape)

Video Signal 720/60p,720/30p,720/50p, 1080/50i,1080/60i,
720/25p

Number of Pixels 1280 X 720 1440 X 1080

Aspect Ratio 16:9

Compression MPEG2 Video (profile & level: MP@H-14)
Sampling Frequency for Luminance 74.25MHz 55.7MHz
Sampling Format 4 : 2 : 0
Quantization 8 bits (both luminance and chrominance)
Bit rate after Compression Approx.19Mbps Approx. 25Mbps
Audio
Compression MPEG1 Audio Layer II
Sampling Frequency 48kHz
Quantization 16 bits
Bit rate after Compression 384kbps
Audio Mode Stereo (2 channels)
System
Data Format MPEG2 Systems
Stream Type Transport Stream Packetized Elementary Stream
Stream Interface IEEE1394 (MPEG2-TS)

One of the best sites explaining editing HDV:
http://videosystems.com/ar/video_edit_hdv/index.htm

One of the best sites explaning HDV:
http://www.microsoft.com/windows/windowsmedia/howto/articles/UnderstandingH...



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