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October 25th, 2007, 11:27 AM
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#46 | |
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Regular Crew
Join Date: Sep 2007
Location: Ann Arbor, MI
Posts: 39
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Quote:
Since this camera is API based would it be possible to vary the eV frame by frame via custom software? Last edited by Jay Burlage; October 25th, 2007 at 12:17 PM. |
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October 25th, 2007, 11:31 AM
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#47 |
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Major Player
Join Date: Dec 2004
Location: New York City
Posts: 613
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ah jose, sorry about that, i misread. so sumix does confirm that they compress in hardware and can do 1080p60 at 12bit? any answer regarding the type of compression and how it handles complex scenes that cannot remain lossless at 1.7x compression?
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October 25th, 2007, 11:44 AM
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#48 | |
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Major Player
Join Date: Feb 2006
Posts: 260
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Quote:
I have not made a thread yet, I will once its 100% complete. Pictures should come in a few days. Here are some details for now: 18" long x 10" high black plexiglass body on aluminum rails wide 7" touch screen lcd single hand input device quad core 2 duo q6600 asus p5k deluxe w/ 2x 1Gbit lan 2gb DDR2 1066mhz ram soon @ 4gb 400gb sataII hdd. plans for raid 0 geforce 7900 Im fairly confident it can handle anything I throw at it, especially after I get 4gb ram and raid 0. I have done a lot of filming with the 333. You can see some footage I edited last Sunday here: http://www.buysmartpc.com/temp2/phon...12K_Stream.wmv From another post.. "I was just the camera operator. This is the first time I used the 333 in an actual production environment, and I really was not ready. Its got its problems. It still needs some sound work, compression especially. And there is no CC. This is unmodified video, so it has a bit of green tint to it." Its not the best demonstration for rolling shutter because the shot is locked off. This is before my platform. The camera was connected to a desktop pc. For nearly every setup i had to power down, move pc, move camera, setup mouse/keyboard, boot up, set settings, and 10-15 min later be ready to record again. I know all about the limitations of shooting with the network cameras all too well. Thats why im trying to integrate everything. The new platform only has 1 cable leading to it, power. If plans go well, this Saturday im shooting a film with the new camera platform. It will be all shot hand held and im sure I will run into wobble and distortion problems. But it will give me a good idea of what to expect and learn to deal with it. |
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October 25th, 2007, 12:35 PM
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#49 |
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Major Player
Join Date: Dec 2004
Location: New York City
Posts: 613
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18"x10"? thats pretty big, is that for the whole system with rails and lens etc? i guess probably not since that is a full atx motherboard... so its like a smallish atx case on rails? i built a cheap battery powered mini-itx* computer for my sumix M73 way back when and it was 8"x10" which still seemed quite large to mount on one's shoulder. You dont run yours on battery power do you?
Nowadays there are certainly ITX 6.7"x6.7" options you could put a q6600 into (actually the 2.1Ghz quad xeon socket 775 is cheaper and probably better suited since quadcore for a portable pc is sort of overkill especially on battery power, even undervolted). I've been looking at them in case i ever get around to building a battery-powered portable mini hdmi capture mini-pc for my hv20. *technically wasnt itx spec, if it was it couldve been smaller than 8x10. |
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October 25th, 2007, 01:01 PM
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#50 | |
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Major Player
Join Date: Feb 2006
Posts: 260
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Quote:
I really don't think 18x10 is that big for a camera. The PWD-530 for example is 10 5/8" x 13 1/8" and im pretty sure thats without a lens. With a lens I bet it would be around 18"+. The Canon XL-H1 is almost 20" long, so is the XL2. Mine is only less then 1 inch taller, and even shorter then some. Honestly size was not much of a concern to me when I designed everything. Its comfortable on my shoulder, and a decent tripod wont have any trouble with it. |
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October 25th, 2007, 01:34 PM
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#51 |
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Major Player
Join Date: Dec 2004
Location: New York City
Posts: 613
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If it is comfortable on your shoulder that is what counts.
Your thoughts about other ENG-style cameras were sort of what i thought when i built mine, shoulder mounted cameras are huge, so a big computer on a shoulder shouldnt be so bad. I guess when it comes down to it build and balance probably matter more than actual dimensions. A poorly balanced small camera is probably less comfortable than a big one that is well balanced. Mine was not well balanced and I didnt get around to reorganizing, but that is often the case with computers since everything is usually mounted against a wall rather than situated toward the center/bottom for best balance. An internal skeleton to mount things onto would just add more weight though. Also, most ENG cameras have an in-set shoulder mount built in, so they are 1-2 inches less tall at the top of the shoulder than in front and behind the shoulder. Worrying about size and power consumption make things very complicated very quickly so i can appreciate not wanting to worry about those things. But I would think anything ready for a real production environment would probably have to take those into account somewhat since you wont have much luck getting a lot of types of shots without a camera that can run outdoors and for extended periods of time, not to mention isnt just comfortable but safe and reliable. So what do you do for power? ac cable out the back? |
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October 25th, 2007, 01:41 PM
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#52 |
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Regular Crew
Join Date: Sep 2007
Location: Ann Arbor, MI
Posts: 39
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Daniel,
Did you develop the capture software, expand on elphel's code, or was it bundled with the camera device? I'm really curious to see your rig! Very interesting indeed. |
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October 25th, 2007, 01:50 PM
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#53 | ||
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Major Player
Join Date: Feb 2006
Posts: 260
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Quote:
Yes in the back of the camera leads an AC power cable, the greatest shortcoming. There really is no chance of using a battery with this hungry system. I have been considering a car battery with an inverter but I doubt it would last very long at all. A final thing is noise. This is a pc, which has to cool the CPU and will have 3 extra fans on the ram. The case will have a 140mm fan on the side, and a 80mm in the front cooling the PSU components. There may be another fan on the side with a duct to the cpu. Two hard drives on Raid 0 will only make things worse with spinning and grinding. This will all add up, even with very quiet fans of ~30 dBA sound on location will be a problem. Quote:
I should probably just start a thread later and get this one back on topic :) |
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October 25th, 2007, 02:05 PM
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#54 |
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Major Player
Join Date: May 2007
Location: Sevilla (Spain)
Posts: 439
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We're heading a bit away from the Sumix cam but, Daniel, did you consider a MiniITX board? They support up to 2Gb of ram, Core2Duo processors... And they fit in the palm of your hand. Some are even smaller and come fanless. In fact I'm thinking of getting one for the Sumix and build a standalone cam.
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October 25th, 2007, 02:44 PM
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#55 | |
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Major Player
Join Date: Feb 2006
Posts: 260
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Quote:
Im guessing this is the ones you were talking about: http://www.mini-itx.com/store/?c=32 |
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October 25th, 2007, 03:54 PM
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#56 |
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Major Player
Join Date: Dec 2004
Location: New York City
Posts: 613
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I was talking about these in terms of ITX boards supporting socket 775 Core 2 Quad:
http://www.american-portwell.com/pro...roductid=16133 http://www.icpamerica.com/products/s...no-9654G4.html (might not be good ethernet chipset for this application) http://www.commell.com.tw/Product/SBC/LV-676.HTM (no PCI-e) http://www.ipoxtech.com/ADE-6040.php (may not support quad) Booting from flash, recording to a 2.5" HDD, and an undervolting the CPU and no dedicated graphics this could make very powerful compact system that could be powered by a small m3-atx psu. quad core with 4GB of ram you could take this on the road easily and probably fit it all in a box as small as 7"x9". might even be able to rig it to run on standard camera batteries. or pretty much any battery you throw at it that can handle the power draw (more likely NiMH/SLA than LIon, but then there are quadcore laptops running on LIon so it would probably be fine with the right battery). So basically like the Silicon Imaging DVR body that comes with the SI2K only twice as fast and probably waaay less expensive (but then again time is money). If you dont need quad core and want to go with mobile processor (higher price, lower CPU and FSB clock, more efficient, more resistant to heat) then there is no shortage of ITX boards for merom processors... http://www.logicsupply.com/categories/mainboards/intel ... Might be some santa rosa boards around if you look hard. Oh yeah, we should probably get this thread back on track though :) |
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October 25th, 2007, 06:30 PM
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#57 |
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Major Player
Join Date: Feb 2006
Posts: 260
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Well, since everyone planning to use a Sumix camera will need a computer I think this would be a legitimate topic...
Im pretty impressed with the ITX motherboards you brought up. Too bad I didn't see them before. I'm still a little skeptical if they have the same power as an ATX but things are looking promising. I wish I could see a benchmark, I can't find much data on any of them. In fact, I can't even find a price for any of the 4. |
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October 25th, 2007, 06:41 PM
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#58 |
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Major Player
Join Date: Feb 2005
Location: kentucky, USA
Posts: 429
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Sorry if I missed it but were are the links to some footage. Thanks.
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October 25th, 2007, 07:41 PM
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#59 | |
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Regular Crew
Join Date: Sep 2007
Location: Ann Arbor, MI
Posts: 39
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Quote:
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October 26th, 2007, 03:39 AM
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#60 |
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Major Player
Join Date: May 2007
Location: Sevilla (Spain)
Posts: 439
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They say they'll post some footage within the next days.
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