Truth abouth HD10 output in REC mode at DVinfo.net

Go Back   DV Info Net > And Now, For Something Completely Different... > The Archives > JVC GR-HD1U / JY-HD10U

JVC GR-HD1U / JY-HD10U
All about the original single-CCD HDV camcorders from JVC.


 
 
Thread Tools Search this Thread
Old October 1st, 2003, 07:16 PM   #1
Trustee
 
Join Date: Sep 2003
Posts: 1,435
Truth abouth HD10 output in REC mode

There seems to be some confusion regarding what kind of output HD10 has in REC mode.

Some forum participants insist that the camera allows to choose up to 720p on its Component output during Recording.

This stems from the fact that the cam's menu indeed seems to allow output signal changes in Rec mode.

JVC manual however says that the cam only outputs in 480p during recording, period.

Here's the final answer:

JVC is right. These cameras only output 480p via Component during recording. (Of course, users can still choose whatever signal conversion they please in HD Play mode.)

I also noticed some strong aliasing on Component out during REC - which seems to be introduced by JVC to help focusing?

To see what I'm talking about, try shooting a closeup of some black text on paper. You'll see (at least on HD monitor) that Component out produces strong white aliasing around the letters.

My speculation is that JVC did it on purpose to help focusing: the aliasing appears only when fine lines (like text) are actually in focus. Visually it looks like the image "pops" when in focus (expression coined in by Steve Mullen).

This same effect occurs when looking at cam's LCD monitor, and makes it really easy to say whether or not the focus is achieved.

It could be that the aliasing is simply a result of 480p downconversion of the cam's HD signal. But I think it is likely that JVC did it on purpose in Rec mode.

And now, for twisted ending... wanna still see full-res 720p output while recording? Get the signal not from Component out, but from the iLink port, it's coming out 720p in REC mode just fine.

For this, run firewire cable (I got 30ft one by Laird at $70) from the cam to DH30000 D-VHS recorder, then take D-VHS' Component Out to HD monitor. Voila! - 720p, dramatically high-res monitoring in REC mode! (No aliased edges there, mind you.) The only drawback is about 1.5s delay introduced by DH30K's processor. Credit for this solution goes to Andre Jesmanowicz - see his other great posts in this forum. (Latest D-VHS, DH40000, will work just the same of course.)
Alex Raskin is offline  
Old October 1st, 2003, 10:02 PM   #2
HDV Cinema
 
Join Date: Feb 2003
Location: Las Vegas
Posts: 4,007
Alex is right on all counts.
__________________
Switcher's Quick Guide to the Avid Media Composer >>> http://home.mindspring.com/~d-v-c
Steve Mullen is offline  
Old October 7th, 2003, 08:22 PM   #3
Regular Crew
 
Join Date: Oct 2003
Location: Salvador, Bahia
Posts: 33
about monitoring

I have a couple questions, I think some people here could answer.

First of all, is it possible to monitor in a standard NTSC monitor or TV set while shooting with the JY-HD10?
Since in HD recording the JVC only outputs 480p (which would be the SD format?) would it display normally in any S-video or composite monitor?

And other related question: while using the camera in VIDEO mode, i.e. using as a recorder from the IEEE input, will it output the video thru the composite/s-video connectors, so I can use a external TV to monitor editing using the camera as a bridge?

Sorry if these questions are obvious. I have a small but growing production company and I am looking after buying the JY-HD10 as a first, mid-range camera. I have not access to this equipment here, i have to import it and I am a bit concerned about the investment.




Emilio
Emilio Le Roux is offline  
Old October 8th, 2003, 12:18 PM   #4
Trustee
 
Join Date: Aug 2003
Location: Vancouver BC Canada
Posts: 1,315
Would that HD output during REC setup allow taping on the DVHS? If so would there be any drawbacks as far as quality?
Ken
__________________
Damnit Jim, I'm a film maker not a sysytems tech.
Ken Hodson is offline  
 

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > And Now, For Something Completely Different... > The Archives > JVC GR-HD1U / JY-HD10U

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 09:26 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network