HD cam from JVC
 

The second HD cam from JVC!

http://www.camcorderinfo.com/display...7_03&ref=email

A 2nd HD model?

Ooh, 16:9 chips! Well, chip. It's still a single chipper.
Dual XLR inputs too.

Here's the info for those who can't access that site (I had a hard time).
Dylan
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JVC has introduced it's second high definition camcorder capable of recording high definition video aimed at the consumer / low-end professional market in less than a week. The JVC JY-HD10U includes a 1.18 million pixel native 16:9 CCD recoding up to 720 30 frames progressive video to a MiniDV tape, compressed in MPEG2 format.
Similar to the JVC GR-HD1 released just four days ago, the GR-HD1 can record in three video formats: 720 horizontal line resolution at 30 frames progressive, 480 horizontal line resolution at 60 frames progressive or 480 horizontal line resolution at 60 frames interlaced. The video is recorded to MiniDV tape via MPEG2 compression. The large, 1/3 in. 1.18 million pixel CCD is not the normal 4:3 aspect ratio, but the widescreen 16:9 ration. This allows the camcorder to record true 16:9 video, instead of stretching or letterboxing as other camcorders have in the past.


The camcorder can upconvert video while playing back to fit an HDTV, upconverting to 1080 interlaced, or it can dowconvert to fit an NTSC television. Either way you can play back the recorded video onto your television. The data stream rate for the camcorder is said to be 19Mbps, and it includes JVC's own video editing software for manipulating the special video - which is not compatible with most current video editing solutions.

The camcorder also includes an optical image stabilizer, two XLR inputs, a Firewire output, a 10x optical zoom, the ability to record stills and MPEG4 video to SD cards, and a newly developed lens. The company did not announcing pricing information on the product, however they did advertise it as ''...a flexible, affordable HD digital camcorder that will make it possible for video professionals at all levels to enter the HD production market.'' The company did say that the JY-HD10U would be available in May.

The two new High Definition Video Cameras [the consumer GR-HD1 & the JY-HD10U prosumer] apparently exhibit a very good method of compression that out performs consumer DVD's .

* both Both camcorders feature a very high-quality, all-glass, 10X (f=5.2mmÐ52mm) zoom-lens

* both employ an optical image stabilizerand have a single, 1/3-inch, 1.18 megapixel CCD capable of generating both interlace and progressive images.

* The JVC CCD is a new design that uses white, green, cyan, and yellow filters to deliver maximum effective vertical resolution in progressive mode. The single CCD is supported by a 10-bit image DSP.

* The compression is MPEG-2 Continious Bit Rate, rather than a Veriable Bit Rate .
The advantage of a CBR is that the image data rate of these JVC HD Cams is 18.6Mbps and thus provide maximum image quality beyond DVD's 4 - 10 Mps . VBR is only required where you have a limited space to encode onto , ie. a DVD single layer has only 4,7 GB . Conversly ,Mini DV tape
allows 25 Mps for Mini DV and so there is loads of space for recording JVC's HD Cams MPEG-2 streams - as the total program data rate recorded to tape will be 19Mbps.

* MPEG-2 compression is employed with a short, 6-frame GOP{thus 5 GOP's every 30 frames}, this again is better than most MPEG-2 encoded DVD's [except superbit versions.

It's unknown at this stage when PAL models will be released , but the short GOP for the NTSC can only indicate less compression and a shorter GOP for PAL {as one would speculate that with PAL's 25 frame rate a 5-frame GOP's as opposed to NTSC's 6- Frame GOP's with 30 frames }

* The JY-HD10U prosumer version includes a dual XLR adapter (integrated into the handle) with a mount for a shotgun mic.Although not reported anywhere it would be speculated that the JY-HD10U
would also have full manual control of sound such as mic level control .

See:
http://www.mindspring.com/~d-v-c/HD1_HD10.htm

Good luck trying to do chromakeying work with this camera!

>>* The JVC CCD is a new design that uses white, green, cyan, and yellow filters to deliver maximum effective vertical resolution in progressive mode. The single CCD is supported by a 10-bit image DSP.
<<

cyan and yellow are considered subtractive colors for printing and still photography. I'm confused, green and white are additive.

could someone explain how this color model would work?

<<<-- Originally posted by Joe Carney : >>* The JVC CCD is a new design that uses white, green, cyan, and yellow filters to deliver maximum effective vertical resolution in progressive mode. The single CCD is supported by a 10-bit image DSP.
<<

could someone explain how this color model would work? -->>>

Since Joe is quoting from my site, I'll suggest you go to it and look at my new CCD diagram. A 4 pixel "window" is slid across and down the CCD generating luma and chroma at every location. Each location yields 2 luma, and one each RGB.

Steve Mullen
www.mindspring.com/~d-v-c