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October 27th, 2005, 11:20 PM | #31 | |
Space Hipster
Join Date: Oct 2001
Location: Greensboro, NC
Posts: 1,508
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Quote:
Compared to SD card? See my point - that's not apples to apples. Compared to HDV? Again, not apples to apples... The only even marginally valid comparison is Grass Valley's Infinity system using CF but details are very sketchy (plus the cam cost 5 times the HVX200) Until there is a another solid state solution for shooting 1080p 4:2:2 100 Mb/s option, i don't see what how the "expensive" complaint can be considered objectively. It's purely subjective as we miniDV shooters have become used to shooting with $3K camera and $5 tapes. But those of that shot 16mm before realize it's all relative. 1080p 100 Mb/s 4:2:2, variable frame rates and the like can't be done on cheap tape or cards. Just look at the Firestore - they had to redesign the whole line just to take DVCPro-HD. |
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October 27th, 2005, 11:28 PM | #32 |
Obstreperous Rex
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When you look at it from the standpoint of "what are my other options for working with DVCPRO HD," then the P2 card prices don't seem that bad at all.
Not needing a $20,000 VTR is a pretty big savings right up front. |
October 28th, 2005, 01:52 AM | #33 |
Regular Crew
Join Date: Sep 2005
Location: Bevery Hills, CA
Posts: 48
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The REAL point behind P2 cards
OK, all this info is very nice and dandy, but I think most people are missing the real point behind the P2 issue.
For me, and I think for 90% of camera users, the real issue (even if they haven't realized it yet) is that recording to a medium that can only hold just a few minutes of footage is simply unacceptable and impossible to implement in a realistic every day production or workflow. So the HVX can be a marvelous idea, but until they can come up with a way to record AT LEAST 20 minutes of HD to a card that dosnt need a mortgage to pay for, the HVX will be just a niche camera...... a very small niche camera. |
October 28th, 2005, 12:26 PM | #34 | |
Regular Crew
Join Date: Jul 2005
Posts: 62
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Quote:
As for P2, I think it will be a great option once the prices go down and capacity go up. A bit too pricey for me right now, but the Firestore for 2K sounds reasonable to me. |
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October 28th, 2005, 12:46 PM | #35 | |||||
Major Player
Join Date: Jun 2003
Location: Golden, CO
Posts: 681
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Quote:
Here's what we know... P2 = PCMCIA Type II 32bit Cardbus interface 33MHz (because that's what 32bit cardbus operates at) Maximum theoretically achievable bandwidth = 132MBytes/sec. Quad-Channel memory controller (probably 33MHz) 4 * 32bit SD-type memory chips SD interface base rate is 115KB/sec 150X 1GB card = 16.8MByte/sec hypothetical max 180X 2GB card = 20.2MByte/sec hypothetical max 4 * 16.8 = 67.2 * 8 = 537.6 Mbit/sec 4 * 20.2 = 80.8 * 8 = 646.4 Mbit/sec Here's what we can surmize... Panasonic is not the manufacturer of their P2 cards, they're OEM and pasted with the Panny label. I have a couple theories as to who the contracted manufacturer may be. All components in P2 cards are commodity items. Looking at the top-teir of the currently available commodity components, we magically get the same numbers that Panasonic's marketing machine is spewing forth. As the benchmarks you've seen at Anandtech show, there are several factors which affect the true speeds these components operate at -- interface design, production quality, environment, heat transfer, resistance variations, and karma. 150X 1GB cards are showing real-world speeds up to about 15MB/sec, but let's just play it safe and assume 12.5MB/sec. In an interleaved system, we lose a few picoseconds per cycle and also gain with some redundant cycles at these rates. The 12.5MB/sec can be maintained as long as the cycle is maintained, especially with a 32bitx33MHz memory controller - streaming video data is ideal for this application. If the P2's memory controller can sustain a 12.5MB/sec for each SD channel and interleave the data, writing one DWORD to a channel before cycling to the next, then there's more than enough bandwidth to go around. We're looking at 50MB/sec (400Mbit/sec), which is 4 times the bandwidth needed for the 100Mbit/sec DVCProHD100 and enough to saturate a Firewire400 connection and close to maximum for a USB2 connection for common external data readers. Due to the higher density fab process and higher rated speeds of most good 2GB SD chips, the speeds only goes up. Panasonic is claiming 640Mbps throughput, which is what the current crop of 180X SD chips would yield in a quad-channel arry and they very well could sustain that on read-only operations. For write operations, it will obviously be slower, however, we should still have at least 5X the bandwidth necessary for 100Mbps DVCProHD recording. Quote:
I'm not an uber-engineer, but I am involved to some degree with components manufacturing. I think I have a pretty good idea of what a P2 card can be assembled and sold for... If not for the already licensed chipmakers on the P2 partners list, I would probably take a crack at it. At this point I'm just not sure if it's worth the gamble of the $150K in initial set-up costs out of my own pocket. If it works, great... I could probably expand my line and grow a new startup memory company. If it flops, my wife would be pissed and I'd have to sell all my camera and computer gear and get a second job to make back the money. It's a lot less brain damage for me to simply buy the cards that will be available. That doesn't mean I have to accept that Panasonic is charging a premium for their P2 cards. Quote:
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- Jeff Kilgroe - Applied Visual Technologies | DarkScience - www.darkscience.com |
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October 28th, 2005, 01:16 PM | #36 |
Skyonic New York
Join Date: Nov 2001
Location: NYC
Posts: 614
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there seems to be a thought that we should just be happy that p2 cards cost what they do and be done with it...maybe you guys are right..
my point was that if you had the parts and know how you can make your own p2 card for significantly less money...err we don't have the know how... but there is a factory somewhere china thats just itching 4 gig p2 card msrp $400 vs actual bnh streetprice $ 2,099.95 (msrp per sd card 1gig 133xrated $124) 8 gig p2 card msrp $800 vs actual bnh streetprice $ 2,199.95 (msrp per sd card 2gig 133xrated $203) 16 gig p2 card msrp $2800 vs actual bnh streetprice $ NA (pretec makes a 133xrated 4gig card $699msrp times 4 cards, not sure if its zero defect rated) it was mentioned that the memory i listed is not zero defect rated, it is... it was mentioned that why would panasonic hold back, and not sell the p2 cards as cheap as they possible could...well here are my reasons for that they have a superior recording format and that is the premium you must pay to use it, they invented p2, and for all the rd you must pay a premuim for that...it is expected that stuff with a pansonic label be priced well above cost, and it should other wise jwin or coby would have invented the p2 system however lets not say that panasonic is making and selling p2 at cost, it is possible to make them at a lower cost, and i expect china is gearing up to to produce half price knock offs very soon, they will be using the hvx in china too right? ohh and by the way p2 is just an intermediate format, you still need to archieve footage, so you can add $240 to every 200 gigs you shoot if you plan on using a hardrive...at about $120 per 200gigs you should by two for piece of mind...but $240 bucks per 200 gigs is nothing compared to $2,000 per 8 gigs...at least with a vtr i know what i shoot is on a tape, i can hand it off to clients, and they can put it on there shelf, and view it in a year or two or more...i still think the biggest problem for folks like me that don't have the fortune of shooting movies but do all corporate work will be an archieve solution that makes all my clients and wallet happy...i may have to swallow that $20,000 pill anyway... it could be worse the camera could have a removable lens and then we could complain about the cost of a wide to go with that tele...i suspect we should leave that the jvc and canon fanboys... |
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