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Old August 15th, 2011, 08:59 PM   #1
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Ninja/ jvc gyhd101

Hi, I thought that I would briefly report that we successfully tested a NInja HDMI recorder with a GYHD 101 camera. We took the feed out of the component outputs into a relatively cheap component to HDMI converter and into the Ninja and recorded 720P 50 frames per sec prores HQ without any problem at all. I did try to record a SD signal out of it but was unsuccessful.
Given that the crappy JVC HD tape recording system on the camera has failed and JVC refuse to acknowledge that this is a design/ manufacturing problem, I can record in 720P without spending nearly $3000 dollars on a new recording mechanism to replace the replacement recording mechanism which failed.

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Ian Skurrie
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Old August 18th, 2011, 08:47 PM   #2
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Re: Ninja/ jvc gyhd101

Is there any quality improvement over recording to tape?

Thanks,
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Old August 19th, 2011, 02:07 PM   #3
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Re: Ninja/ jvc gyhd101

Would you list the brand and price of component-to-HDMI-converter you used, and if it works with US standards? I'd like to use one and bypass the tape route, as well. Thanks.
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Old August 20th, 2011, 04:31 AM   #4
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Re: Ninja/ jvc gyhd101

Very interested on folks views as to quality on this method, this is a 4:2:2 uncompressed source right ? Ian how is the footage ?
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Old August 24th, 2011, 01:16 AM   #5
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Re: Ninja/ jvc gyhd101

Hi,
I borrowed the ninja rig so I am in the process of getting the information for you all. The picture quality was quite good and seems to be better than what I would have expected from tape. However since I can't record HD to tape anymore complements of a mechanism which failed after a few short months I can't do a side by side analysis.
That said, I would say that there is less noise, better detail in darker areas of the picture and I think probably better dynamic range than I would expect from tape. My apologies for not being more specific.

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Ian Skurrie
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Old August 25th, 2011, 10:45 PM   #6
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Re: Ninja/ jvc gyhd101

Here are the details.
The component to HDMI converter link is component RGB to HDMI converter v1.3 compatible HDCP | eBay
Please note that the converter is really a component YUV to HDMI converter despite what the link says.
The 5 volt power supply was made with a battery pack and was just a 4 x AA battery holder from Jaycar meant to be an emergency phone charger. He ( my mate) made the power cable by cutting up the converter's power cable and a USB cable.

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Ian Skurrie

Last edited by Ian Skurrie; August 26th, 2011 at 09:34 PM.
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Old September 22nd, 2011, 08:24 AM   #7
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Re: Ninja/ jvc gyhd101

Were you able to use it as a monitor to focus with? I'm also wondering if the JVC HZ-CA13U lens adapter is used, could the ninja be turned upside down to correct the flip?

Looks like we may still be able to get really good quality from these older 1/3" chip cameras!
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Old June 14th, 2012, 07:33 PM   #8
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Re: Ninja/ jvc gyhd101

I don't know... I tried this with my HD 200u and a samurai, suing Blackmagic's component to SDI converter. It made my rig pretty awkward, and for all that, the camera still only outputs 8-bit stuff. So you do get a 4:2:2 signal, but no more color depth than before. In my opinion, it's not worth the price unless all you need to shoot is a green screen. It doesn't seem to help with latitude for color grading. Am I missing something?
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Old August 2nd, 2012, 04:34 PM   #9
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Re: Ninja/ jvc gyhd101

I think IF the converter not make a PERFECT work and convert in HDMI a really unconpressed video , qith 4.2.2 colors...you not see really difference from thesame video takeout of tape/firewire...

so IF you have broken your firewire/tape mechan. have sense to use a ninja...also id is little to much expansime for a old cam like the GY HD series...

But if you searching more quality , and hope to recording with ninja in a better HD with 4.2.2 color , of the tape/firewire is better look more confirmed and documets about...because thats cheap converters can not work good what you think...

so...who can show little clips differents (with tape/firewire , and with ninja captured) ?!?
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Old August 3rd, 2012, 05:34 AM   #10
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Re: Ninja/ jvc gyhd101

more..
first remember , uncompressed and 4.2.2 video stream is only present on analog output in realtime use...
so if first you record something to tape, and later you see the result from tape, the otuput analog have thesame quality of the tape..so 4.2.0 and compressed.

For a real good test, you must recorder to the ninja with comp.>hdmi converter in live without tape ....
and later recorder the same clip with tape...
so you can make a real comparison with the 2 clip....
tape one...m2t , 720p 19mb 4.2.0 bit color

and the ninja 720p ? compression better ? bit color 4.2.2 or the converter not work good from analog input and convert to 4.2.0 ???
this is important...or ofcourse you not can have incremente of quality with atoms ninja...before what you just recod to tape.

can any one make a good test and look if there are visible benefits in both the bitrate in bit color ??
4.2.2 if really present made a BIG different from 4.2.0 , specialy for croma key working , color corrections, and dynamic...
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Old August 6th, 2012, 09:58 PM   #11
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Re: Ninja/ jvc gyhd101

Quote:
Originally Posted by Jimiz Zanei View Post
can any one make a good test and look if there are visible benefits in both the bitrate in bit color ??
4.2.2 if really present made a BIG different from 4.2.0 , specialy for croma key working , color corrections, and dynamic...
I don't have my camera anymore, but I had found no practical difference between the analog 4:2:2 and the internal 4:2:0 HDV recording of the JVC 111E. In my personal opinion, don't waste your time.
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Old August 7th, 2012, 02:02 AM   #12
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Re: Ninja/ jvc gyhd101

I fail to see how going to analogue and back can possibly improve picture quality. You might be able to record in 720 pro res but the D to A, then A back to D would seem to remove any of the advantages of the higher bit rates.
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Old August 9th, 2012, 02:44 PM   #13
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Re: Ninja/ jvc gyhd101

Depend
If the converer (chip) not convert right the color bit 4.2.2 and compression without change...sure the quality can be better...BUT if the nija can really recorder a input really 4.2.2 from the jvc hd...must be better, meaby not soon with eyes look , but in editing with color corr. and croma key...IF is a really 4.2.2 you must see the different and can be little...if you see then thesame file but from tape or firewire.

Sure, if the converter analog component to hdmi..not work well ...you can have a better files from tape.

But we are sure the analog output of the jvc hd 1xx and 2xx , have a really 4.2.2 uncompressed video ? if yes...no one have try to made a acquisition from those input with a good pci cards HD of mac/pc ?? those videocards can recording HD analog component inputs , with 10 bit color...

in this situation you can have the true... and see if the analog output is really 4.2.2, uncompressed and more better of the tape/firewire output.
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