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Discussion Starter · #3 ·
sorry, about the slow connect, it's my home dsl... if anyone has any faster

space feel free to mirror it.
 

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DrEvil,


If this is non-copyrighted material that you took yourself, I will host it on my web site. Give me about an hour to download it and re-upload and I will post the link here.


Bob
 

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DrEvil,


Is that bitstream direct from the camera, or has

it been through the editor?


First glance results are:


19.502376 Mbps Transport Stream


18.3 Mbps 1280h x 720v progressive at 29.97 fps video


384 kbps 48 khz MPEG-1 audio


GOP is 6 frames, IBBPBB


Ron
 

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Quote:
Originally posted by bpearse
DrEvil,


If this is non-copyrighted material that you took yourself, I will host it on my web site. Give me about an hour to download it and re-upload and I will post the link here.


Bob
It's a shot of a fishtank, so I'm guessing it's

non-copyrighted. Here's a frame, but remember it's

resized to 640x360 to fit on AVS.


Ron
 

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Discussion Starter · #8 ·
yes, it's all original footage, I shot it this past weekend at the Long Beach

Aquarium of the pacific. I have couple of hours of footage from there,

including some really good jellyfish footage, working on a edit now...


also, I did load this into Mpeg Studio to chop out a bit, the original take is

130megs, it doesn't appear to do anything to the footage, since the export

took only a few seconds, so I think it just re-wrote out the chunk without

re-compressing it.


RANT START:confused:


btw, Mpeg Edit studio LE is almost worthless. It only lets you work on

the transport streams from the camera, There doesn't appear any way to

import footage from other sources, (avi, mpeg2 system stream, ect...)

I guess it's because of the "LE" version, and since the real pro ver costs

4000$, I think that's a really big mistake on jvc's part.....


somebody needs to make a affordable mpeg2-PS > mpeg2-TS converter!!!

not planning on spending 800$ (min) just to write out to d-vhs, or back

to the camera! (mpeg2ts is less then stellar)
 

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Discussion Starter · #9 ·
yeah glare was a nuisance, I did shoot outside footage as well, I didn't capture

that tape yet but I will post a clip from that tomorrow though.
 

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Discussion Starter · #10 ·
well, since I let the cat out of the bag.. I might as well post my first impressions

about this camera, to sum it up in a nutshell if the "CineAlta HDW-F900" is

the eqiulivent to say a hi-end slr in the still digital world like.. "canon 1ds" (ok,

not the best analogy, but I just want to establish a scale here) then

I would say the GR-HD1 is a good "Point and shoot camera" "canon elph, ect"

given that each camera has it's own marketplace, I think the JVC is

well situated for where I think it's target market is, (consumer level hdtv users)


It's people like us here, that tend to take these new products and push them

to their limits, then complain when a 3500$ cam can't compare to a 200,000$

cam package. I must commend JVC on their commitment to pushing HD toward

the consumer level, somebody has to be the first, and I can't imagine that

they didn't know going into this (including D-VHS) that these are just temporary

formats, and that HD-DVD is just around the corner, yet they still pushed on

and brought products to market, instead of just talking about what they will do.


What I think this will do if anything is stimulate the market, everyone else is going to need to

get off their butts and compete, in the end we all win.



now having said that, I plan on pushing this camera to it's breaking point.

I'm in the process of setting up a test shoot, poising the GR-HD1, against

the XL1S, and the Panasonic AG-DVX100, and possibly even the CineAlta.

then up-resing and recording out to 35mm film. (don't expect results for

a couple of weeks at least... just started on setting everything up)



And on one last note, it's nice having a small camera out in the field, and

not attracting attention to yourself, nothing attracts more people of the kind

you don't want to attract like a big production looking camera.



um, one last thing... anybody up for some "Girls gone wild HD??" hehe...
 

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I see why the GOP has been set to six frames. It

is to provide editing granularity of six frames,

or 0.2 seconds. Each GOP is also "closed", meaning

that the first two B-frames don't reference the

previous GOP. Unfortunately, this makes for a

more poorly coded first B-frame in each GOP.


To make the GOP closed, the first two B-frames are

coded with backward prediction only. The first B-frame,

which is 2 frames away from the predictor, suffers.


Here's a graph of the average mquant of frames 30 thru 50.

Lower mquants mean better coding. The peaks at around 7.5

are the 1st B-frame in each GOP. I-frames are coded

around 4.0, P-frames around 4.5 and the remaining

B-frames around 5.5.


The reason for the more poorly coded 1st B-frame is

probably a short motion vector search range.


However, for a single chip HD encoder, I'd say it's

damn impressive. To be honest, I was expecting a

higher rate I-frame only stream.


Ron
 

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Here's the bits per frame for the same 20 frames.

I-frames at about 1.5 million bits, P-frames around

750000 bits and B-frames around 370000 bits.


The left edge of the graph got a little cut off. So it's


2000000

1500000

1000000

500000

0


Ron
 

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Discussion Starter · #13 ·
here are a couple more samples... :)

www.aquamonkey.com/gr-hd1_ts2.zip (24 megs)
www.aquamonkey.com/gr-hd1_ts3.zip (48 megs)


eeek. my server gonna be hurtin...


the first one is some southern cali fish. (much better contrast here)

the second one is some jellyfish (this was very low light, so I was pleasently surprised by the lack of noise.)


I'll post footage from around Long Beach (outdoors) tomorrow. now to get some sleep..
 

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DrEvil,


The clips look great considering the lighting, that it's a consumer HD camera, and it's only at about 2.5MB per second. Wish I could find some extra cash to get me one of these!


Jeff
 

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Cant wait for the results of the shootout/upresing/to 35mm...


Thanks in advance!

TM
 

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Quote:
rename the video file to .tp or .ts and it will play on HiPix or Fusion. Also plays as .mpg on WMP9.
I'm not getting this to work for either format. I don't have HiPix or Fusion but when I try to convert to .tp or .ts and use the HDTV2MPEG2 tool to convert to mpg I get nothing.


Thanks for the info and updates on the camcorder.


Troy
 

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Quote:
Originally posted by Troy LaMont
I'm not getting this to work for either format. I don't have HiPix or Fusion but when I try to convert to .tp or .ts and use the HDTV2MPEG2 tool to convert to mpg I get nothing.


Troy
I've gotten it to work with VLC

http://www.videolan.org/


I haven't tried it yet with MyHD.



Thanks DrEvil for the demo files. This is giving me a much better view of the camera's video than I'd be able to get at a store. Now I'm tempted!


David
 

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WOW. Used the VLC player and it works great. Thanks for the link to thank David. And thanks DrEvil for the files. Very cool. Perhaps most importantly though, anyone have any sense for when we'll get MPEG2 handling in NLE's? I'm most interested in Avid DVExpress for OSX...


TM
 

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CineForm showed a product at NAB that decompresses the Mpeg2 from the JVC camera into an AVI file and allows you to edit using Adobe Premier. Cost was $2000. Their number is 760 804-5905. Don't know about a Mac version.
 
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