JVC GR-HD10U TO HDCAM through AJA at DVinfo.net

Jeff Krebs · December 19th, 2003, 02:03 PM

Hello All,
A couple of productions in Toronto are looking very seriously at the JVC GR-HD10U. Last season they shot and we posted in HDcam 23.98.
Obvious cost savings, I don't need to go into details.
Anyway I'm testing the camera and am trying to dub the footage by setting the "all to 1080" switch going through the AJA Component to SDI convertor.
If I go directly to the monitor, no problem.
If I pass it through my HDWF500,I get sync tearing. The image is stable for the most part except for sync tearing lines.
I have the deck set to 59.94 and it is referenced properly using an evertz tri level sync generator. I tried 59.94 (the proper setting ) and 60i same problem.
I also tried setting the HD deck to look at HD sync and SD sync.
No go.
Any help is appreciated. I hope I explained it well enough.

Heath McKnight · December 19th, 2003, 08:56 PM

This is very interesting; I was curious about going through a card like the AJA.

Keep us posted, and if anyone has some tips, please post them!

heath

Darren Kelly · December 20th, 2003, 03:46 AM

The 1080i out of the camera is a little different than the standard 1080i your HDCam deck is use to.

I have a set up that includes an AJA converter and it had to be modified at the factory to work with the camera properly.

I would recommend you contact AJA on Monday to discuss the setup and and issue. I believe it can be adapted to work.

Work around for this is dubbing the footage to a DVHS deck (no loss it's a straight digital dub) then using the DVHS deck to feed the HDCAM.

I hope this helps

DBK

Ken Hodson · December 20th, 2003, 10:20 AM

If you have to go to tape first, doesn't that erase the advantage of going componet out (compression)? Does the DVHS have component in/out?

Darren Kelly · December 20th, 2003, 01:08 PM

Both the camera and the deck have FW, and the transfer is digital, so completely lossless.

The deck also has component out, so you're not loosing anything.

Does this make sense?

DBK

Ken Hodson · December 20th, 2003, 06:10 PM

But then you are subjecting your video to the compression and colour space limits as soon as it is on the cams tape. Correct? I know that moving the data to and from the cam and DVHS is lossless. But the footage that is captured on the cam isn't.
What is the point of doing this if you aren't going to capture the video "raw"?
Ken

Darren Kelly · December 20th, 2003, 08:28 PM

I'm sorry Ken, I'm not getting it.

He going to transfer the footage to HDCam, in other words he's going to uncompress it to capture it on HDCAM.

Assuming he's going to edit it uncompressed, which is very likely, it will not suffer any loss due to compression.

I produced the DVD by taking the footage uncompressed out of the camera and onto some huge hard drives. I did not further compress the images.

No compression, no loss.

DBK

Jeff Krebs · January 6th, 2004, 06:31 AM

This is great info.
So what is the difference in the 1080i output.
I'll call JVC and let them know. They Canadian office was wondering why it was not working as well.

I'll also call AJA

Thanks

Heath McKnight · January 6th, 2004, 02:36 PM

I talked to AJA and they said they made the Kona HD card so you are able to capture the footage which becomes, I believe, HD SDI. That's what AJA told me over the phone.

heath

Darren Kelly · January 6th, 2004, 02:39 PM

You need to purchase an A-D converter to capture footage from the JVC camera. The camera does not put out SDI.

The converter is about $2500.00 - I bought one in September.

DBK

Heath McKnight · January 6th, 2004, 02:48 PM

I'll call AJA back and ask them again.

heath

Darren Kelly · January 6th, 2004, 02:54 PM

You need not call them. I have a Kona card, the adapter and the camera. It is the only way it works.

The JVC outputs analog HD, not SDI HD which is different, hence the need for the converter.

DBK

December 19th, 2003, 02:03 PM	#1
Jeff Krebs Tourist Join Date: Dec 2003 Location: Toronto Posts: 3	JVC GR-HD10U TO HDCAM through AJA Hello All, A couple of productions in Toronto are looking very seriously at the JVC GR-HD10U. Last season they shot and we posted in HDcam 23.98. Obvious cost savings, I don't need to go into details. Anyway I'm testing the camera and am trying to dub the footage by setting the "all to 1080" switch going through the AJA Component to SDI convertor. If I go directly to the monitor, no problem. If I pass it through my HDWF500,I get sync tearing. The image is stable for the most part except for sync tearing lines. I have the deck set to 59.94 and it is referenced properly using an evertz tri level sync generator. I tried 59.94 (the proper setting ) and 60i same problem. I also tried setting the HD deck to look at HD sync and SD sync. No go. Any help is appreciated. I hope I explained it well enough. __________________ Jeff Krebs Serial Digital Post Toronto, Ontario

December 19th, 2003, 08:56 PM	#2
Heath McKnight MPS Digital Studios Join Date: Apr 2003 Location: Palm Beach County, Florida Posts: 8,531	This is very interesting; I was curious about going through a card like the AJA. Keep us posted, and if anyone has some tips, please post them! heath __________________ My Final Cut Pro X blog

December 20th, 2003, 03:46 AM	#3
Darren Kelly Major Player Join Date: Aug 2003 Location: Vancouver Posts: 351	The 1080i out of the camera is a little different than the standard 1080i your HDCam deck is use to. I have a set up that includes an AJA converter and it had to be modified at the factory to work with the camera properly. I would recommend you contact AJA on Monday to discuss the setup and and issue. I believe it can be adapted to work. Work around for this is dubbing the footage to a DVHS deck (no loss it's a straight digital dub) then using the DVHS deck to feed the HDCAM. I hope this helps DBK __________________ Darren Kelly

December 20th, 2003, 10:20 AM	#4
Ken Hodson Trustee Join Date: Aug 2003 Location: Vancouver BC Canada Posts: 1,315	If you have to go to tape first, doesn't that erase the advantage of going componet out (compression)? Does the DVHS have component in/out? __________________ Damnit Jim, I'm a film maker not a sysytems tech.

December 20th, 2003, 01:08 PM	#5
Darren Kelly Major Player Join Date: Aug 2003 Location: Vancouver Posts: 351	Both the camera and the deck have FW, and the transfer is digital, so completely lossless. The deck also has component out, so you're not loosing anything. Does this make sense? DBK __________________ Darren Kelly

December 20th, 2003, 06:10 PM	#6
Ken Hodson Trustee Join Date: Aug 2003 Location: Vancouver BC Canada Posts: 1,315	But then you are subjecting your video to the compression and colour space limits as soon as it is on the cams tape. Correct? I know that moving the data to and from the cam and DVHS is lossless. But the footage that is captured on the cam isn't. What is the point of doing this if you aren't going to capture the video "raw"? Ken __________________ Damnit Jim, I'm a film maker not a sysytems tech.

December 20th, 2003, 08:28 PM	#7
Darren Kelly Major Player Join Date: Aug 2003 Location: Vancouver Posts: 351	I'm sorry Ken, I'm not getting it. He going to transfer the footage to HDCam, in other words he's going to uncompress it to capture it on HDCAM. Assuming he's going to edit it uncompressed, which is very likely, it will not suffer any loss due to compression. I produced the DVD by taking the footage uncompressed out of the camera and onto some huge hard drives. I did not further compress the images. No compression, no loss. DBK __________________ Darren Kelly

January 6th, 2004, 06:31 AM	#8
Jeff Krebs Tourist Join Date: Dec 2003 Location: Toronto Posts: 3	This is great info. So what is the difference in the 1080i output. I'll call JVC and let them know. They Canadian office was wondering why it was not working as well. I'll also call AJA Thanks __________________ Jeff Krebs Serial Digital Post Toronto, Ontario

January 6th, 2004, 02:36 PM	#9
Heath McKnight MPS Digital Studios Join Date: Apr 2003 Location: Palm Beach County, Florida Posts: 8,531	I talked to AJA and they said they made the Kona HD card so you are able to capture the footage which becomes, I believe, HD SDI. That's what AJA told me over the phone. heath __________________ My Final Cut Pro X blog

January 6th, 2004, 02:39 PM	#10
Darren Kelly Major Player Join Date: Aug 2003 Location: Vancouver Posts: 351	You need to purchase an A-D converter to capture footage from the JVC camera. The camera does not put out SDI. The converter is about $2500.00 - I bought one in September. DBK __________________ Darren Kelly

January 6th, 2004, 02:48 PM	#11
Heath McKnight MPS Digital Studios Join Date: Apr 2003 Location: Palm Beach County, Florida Posts: 8,531	I'll call AJA back and ask them again. heath __________________ My Final Cut Pro X blog

January 6th, 2004, 02:54 PM	#12
Darren Kelly Major Player Join Date: Aug 2003 Location: Vancouver Posts: 351	You need not call them. I have a Kona card, the adapter and the camera. It is the only way it works. The JVC outputs analog HD, not SDI HD which is different, hence the need for the converter. DBK __________________ Darren Kelly