JVC GY-HD100 can record 720/60P? at DVinfo.net

David Gomez · April 18th, 2005, 02:54 PM

It states the following from camcorderinfo.com....

"In addition to this the camcorder can record 720/30P, 720/60P, 480/60i, and 480/24P."

I thought it was only able to output 720/60P. Is that statement accurate that it can also record 720/60P?

Thanks

Don Crockett · April 18th, 2005, 03:40 PM

720/p60 is output only:
From GY-HD100U features page:
http://pro.jvc.com/prof/Attributes/f...&feature_id=01
"Live 720/60P analog component output"

From U.S. announcement press release:
http://pro.jvc.com/prof/Attributes/p...&feature_id=08
"In addition to providing HD true progressive 24 P superior quality recordings, the GY-HD100U outputs uncompressed 720/P60 HD, making it ideal for live broadcasting, remote news and POV applications. An optional module converts the uncompressed signal to HD-SDI for use in a variety of user environments."

Murad Toor · April 18th, 2005, 04:52 PM

Quote:

Originally Posted by Don Crockett

720/p60 is output only:
From GY-HD100U features page:
http://pro.jvc.com/prof/Attributes/f...&feature_id=01
"Live 720/60P analog component output"

From U.S. announcement press release:
http://pro.jvc.com/prof/Attributes/p...&feature_id=08
"In addition to providing HD true progressive 24 P superior quality recordings, the GY-HD100U outputs uncompressed 720/P60 HD, making it ideal for live broadcasting, remote news and POV applications. An optional module converts the uncompressed signal to HD-SDI for use in a variety of user environments."

Could a JVC 30K D-VHS deck record that 60p signal? I would hope so. :)

Barry Green · April 18th, 2005, 11:50 PM

Quote:

Originally Posted by David Gomez

Is that statement accurate that it can also record 720/60P?

Definitely not. I asked one of their Japanese engineers that directly, and they unequivocally said "no".

Heath McKnight · April 19th, 2005, 08:42 AM

I like the uncompressed HD-SDI.

heath

Mathieu Bergeron · April 21st, 2005, 03:25 AM

Does anyone know if the video from the uncompressed analog output has been through all processing (even HDV encoding) or is it straight from the CCD at let say... 4:4:4?

Mathieu Bergeron · April 21st, 2005, 03:46 AM

Sorry about that... it's been answered here
http://www.dvinfo.net/conf/showthread.php?t=43308

Still wander if the 4:2:2 signal has been through a lot of processing? I have a GY DV500 and it's analog output is derived from the compressed signal wich is of no use for high quality recording... Just want to make sure it's not 4:2:0 compressed brought back to 4:2:2 uncompressed!

Joe Hudson · April 25th, 2005, 07:06 PM

what's the problem with 720/60i ? isn't it the same bandwidth as 720/30p ? it sure would be useful to have it recorded to the onboard recorder so why doesn't the HD100 support it? could it be a firmware upgradeable feature?

Barry Green · April 25th, 2005, 07:15 PM

Quote:

Originally Posted by Joe Hudson

what's the problem with 720/60i ? isn't it the same bandwidth as 720/30p ? it sure would be useful to have it recorded to the onboard recorder so why doesn't the HD100 support it? could it be a firmware upgradeable feature?

There's no such format as 720/60i. In HD, all 720 is progressive always, there's no interlaced version of 720.

Joe Hudson · April 25th, 2005, 07:42 PM

ah, ok, cheers Barry. shows how much I know. still it would be useful for a more live look...

Barry Green · April 25th, 2005, 08:21 PM

Well, actually, that's what 60p does for the 720 mode. 720/60p gives the same live/reality look that 60i does in NTSC. Well, better actually because there's no interline twitter or flicker or comb artifacts, but the point remains: 60 samples per second = "reality" images.

Michael Maier · April 26th, 2005, 04:36 AM

Quote:

Originally Posted by Murad Toor

Could a JVC 30K D-VHS deck record that 60p signal? I would hope so. :)

Interesting question. I wonder the same thing.

Steve Gibby · April 26th, 2005, 08:27 AM

Tech companies will quickly produce affordable accessories to function as workarounds for utilizing the HD100's uncompressed analog component output. Where there is demand, someone will step up to fill the need.

The existing component to HD-SDI converters were designed for larger cameras, and they're very expensive. A stop by the Miranda booth at NAB illustrated that. What will be produced shortly by other companies that service the more affordable product market, are inexpensive component to HD-SDI converters that are small, thus very suited for use with the HD100. If the same converters also had a Firewire bus and the ability to compress the uncompressed component input to HDV 720p60 for output to an affordable clamshell HDV deck that could record in all the resolutions and frame rates of the HDV spec, including 720p60, the user of the converter would have two pathways for using 720p60 from the HD100:

1) Pass through 720p60 4:2:2 uncompressed to the small converter mounted on the camera, output the HD-SDI from the converter to a computer, with a raid array, and multiple TB storage. Computers are getting faster every month, raid arrays are getting more capable, and storage in TB is plummeting in cost. For certain projects and budgets this would be a viable workflow.

2) For mobile production of high-speed sports, reality, etc, the compressed HDV 720p60 4:2:2 (or 4:2:0) output of the converter via Firewire (mounted on the camera) would be recorded to tape on the clamshell deck, or a modified Firestore HDD, worn on a belt pack. The footage would then be available for non-live posting, including enhanced ability to do slo-motion and compositing. The clamshell deck or Firestore HDD would obviously have many other production uses. One use for the clamshell deck would be exactly the workflow I've been using for network television POV shots: lipstick cameras wired to clamshell decks in protective backpacks. There will be affordable 720p/1080i lipstick and cigar cameras on the market shortly.

This week, after seeing ADS Technology release an affordable, small component to SDI converter, I e-mailed the tech staff at ADS with my suggestion for the mobile, affordable component to HD-SDI converter for use on the HD100. They thanked me profusely for the suggestion and indicated that they would be analyzing the possibilities on that real soon.

April 18th, 2005, 02:54 PM	#1
David Gomez Regular Crew Join Date: Oct 2003 Location: Atlanta Posts: 50	JVC GY-HD100 can record 720/60P? It states the following from camcorderinfo.com.... "In addition to this the camcorder can record 720/30P, 720/60P, 480/60i, and 480/24P." I thought it was only able to output 720/60P. Is that statement accurate that it can also record 720/60P? Thanks

April 18th, 2005, 03:40 PM	#2
Don Crockett Regular Crew Join Date: Nov 2004 Location: Newton, MA Posts: 26	720/p60 output 720/p60 is output only: From GY-HD100U features page: http://pro.jvc.com/prof/Attributes/f...&feature_id=01 "Live 720/60P analog component output" From U.S. announcement press release: http://pro.jvc.com/prof/Attributes/p...&feature_id=08 "In addition to providing HD true progressive 24 P superior quality recordings, the GY-HD100U outputs uncompressed 720/P60 HD, making it ideal for live broadcasting, remote news and POV applications. An optional module converts the uncompressed signal to HD-SDI for use in a variety of user environments." Last edited by Don Crockett; April 18th, 2005 at 03:44 PM. Reason: added additional link on component 60p output

April 19th, 2005, 08:42 AM	#5
Heath McKnight MPS Digital Studios Join Date: Apr 2003 Location: Palm Beach County, Florida Posts: 8,531	I like the uncompressed HD-SDI. heath __________________ My Final Cut Pro X blog

April 21st, 2005, 03:25 AM	#6
Mathieu Bergeron New Boot Join Date: Mar 2005 Location: Bruxelles Posts: 18	Uncompressed from compressed? Does anyone know if the video from the uncompressed analog output has been through all processing (even HDV encoding) or is it straight from the CCD at let say... 4:4:4?

April 21st, 2005, 03:46 AM	#7
Mathieu Bergeron New Boot Join Date: Mar 2005 Location: Bruxelles Posts: 18	Oops Sorry about that... it's been answered here http://www.dvinfo.net/conf/showthread.php?t=43308 Still wander if the 4:2:2 signal has been through a lot of processing? I have a GY DV500 and it's analog output is derived from the compressed signal wich is of no use for high quality recording... Just want to make sure it's not 4:2:0 compressed brought back to 4:2:2 uncompressed!

April 25th, 2005, 07:06 PM	#8
Joe Hudson New Boot Join Date: Dec 2003 Location: Southampton, England Posts: 19	720/60i what's the problem with 720/60i ? isn't it the same bandwidth as 720/30p ? it sure would be useful to have it recorded to the onboard recorder so why doesn't the HD100 support it? could it be a firmware upgradeable feature?

April 25th, 2005, 07:42 PM	#10
Joe Hudson New Boot Join Date: Dec 2003 Location: Southampton, England Posts: 19	ah, ok, cheers Barry. shows how much I know. still it would be useful for a more live look...

April 25th, 2005, 08:21 PM	#11
Barry Green Barry Wan Kenobi Join Date: Jul 2003 Location: North Carolina Posts: 3,863	Well, actually, that's what 60p does for the 720 mode. 720/60p gives the same live/reality look that 60i does in NTSC. Well, better actually because there's no interline twitter or flicker or comb artifacts, but the point remains: 60 samples per second = "reality" images.

April 26th, 2005, 08:27 AM	#13
Steve Gibby Major Player Join Date: Apr 2005 Location: Southwest Utah & worldwide Posts: 398	Tech companies will quickly produce affordable accessories to function as workarounds for utilizing the HD100's uncompressed analog component output. Where there is demand, someone will step up to fill the need. The existing component to HD-SDI converters were designed for larger cameras, and they're very expensive. A stop by the Miranda booth at NAB illustrated that. What will be produced shortly by other companies that service the more affordable product market, are inexpensive component to HD-SDI converters that are small, thus very suited for use with the HD100. If the same converters also had a Firewire bus and the ability to compress the uncompressed component input to HDV 720p60 for output to an affordable clamshell HDV deck that could record in all the resolutions and frame rates of the HDV spec, including 720p60, the user of the converter would have two pathways for using 720p60 from the HD100: 1) Pass through 720p60 4:2:2 uncompressed to the small converter mounted on the camera, output the HD-SDI from the converter to a computer, with a raid array, and multiple TB storage. Computers are getting faster every month, raid arrays are getting more capable, and storage in TB is plummeting in cost. For certain projects and budgets this would be a viable workflow. 2) For mobile production of high-speed sports, reality, etc, the compressed HDV 720p60 4:2:2 (or 4:2:0) output of the converter via Firewire (mounted on the camera) would be recorded to tape on the clamshell deck, or a modified Firestore HDD, worn on a belt pack. The footage would then be available for non-live posting, including enhanced ability to do slo-motion and compositing. The clamshell deck or Firestore HDD would obviously have many other production uses. One use for the clamshell deck would be exactly the workflow I've been using for network television POV shots: lipstick cameras wired to clamshell decks in protective backpacks. There will be affordable 720p/1080i lipstick and cigar cameras on the market shortly. This week, after seeing ADS Technology release an affordable, small component to SDI converter, I e-mailed the tech staff at ADS with my suggestion for the mobile, affordable component to HD-SDI converter for use on the HD100. They thanked me profusely for the suggestion and indicated that they would be analyzing the possibilities on that real soon. __________________ Steve Gibby, RED One SN 0008, 2 others. Epic M SN 0008, 2 others, Canon 5D. Linked In - Steve Gibby Instagram - https://www.instagram.com/stevegibby/