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Author Topic: Cloverfield (2008) David Stambaugh Film God Posts: 4021 From: Eugene, Oregon Registered: Jan 2002 posted 01-29-2008 08:53 PM                        If it's 1920 x 1080, 24P, shouldn't it be (in round numbers and no compression): 2MB/frame = 50MB/sec = 3GB/min So a 90-min. feature would be 90 * 3GB = 270GB. Someone will probably shoot a hole in my math.  |  IP: Logged Kyle Anderson Film Handler Posts: 86 From: Tyler, TX, USA Registered: Dec 2005 posted 01-30-2008 04:24 PM                     1920x1080 = 2,073,600 pixels x 32 bits/pixel / 8 bits/byte= 8,294,400 bytes/frame x 24 fps = ~200 MB/s -- this is faster than any single disk drive can handle x 60sec x 90min = ~1,000,000,000,000 bytes, or ~1 Tera B. ( in decimals ) Obviously the movie files are smaller than this ( I've seen longer movies down in the 50-60GB range ); but to do streaming vid work, you can see how big of a data transfer rate you would need (200MB/s is 8x faster than most disk drives today).  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-30-2008 07:48 PM                     Actually David is the more correct... About 270gb is what I believe it was. Th3ere was also alot of other junk on the drove... previews and such. Am pretty sure it was all on a WD 400gb drive. Loading/verifying time into the Dolby Server only took us 24 min. with the hot swap drive. 5 min. later we were watching the show. Mark  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 01-30-2008 08:20 PM                     Different variables are at play in DCI-compliant JPEG2000 movie files. Compression levels can vary. But those compression levels are typically not nearly as squeezed as the bit streams of VC1 and AVC encodings on Blu-Ray and HD-DVD movie discs. The movie files usually run at bandwidths between 150Mb/sec and 250Mb/sec and consume much of the space on a portable 300GB hard disc. Some movie files may be significantly smaller. I heard the last Harry Potter movie took only half the time to ingest as most JPEG2000 movie files. But that movie file probably still had a data bandwidth significantly larger than that of any Blu-Ray or HD-DVD movie. The Doremi server used at most Carmike locations is RAID-based -likely U320 SCSI, but I don't know for sure. I would be surprised if it is SATA or SATA II RAID. 250 million bit per second sustained bandwidth is very practical for many RAID setups. By comparison uncompressed HD-SDI has a 1.485 Gb/sec bandwidth. Some RAID applications are able to handle that. Let's also not confuse bits with bytes. Sure no single hard disc can sustain a 200MB/sec data rate. 250Mb/sec bandwidth (the upper end of the DCI spec) is 31.25MB/sec. That is a practical bandwidth to sustain for some disc setups, especially if they're RAID-based.  |  IP: Logged Lyle Romer Phenomenal Film Handler Posts: 1400 From: Davie, FL, USA Registered: May 2002 posted 01-31-2008 09:17 AM                     I think Allison's question was more along the lines of what size memory card somebody would need on their HD Camcorder to film 90 minutes of a monster attack (that they were witnessing). i.e., Do normal consumer HD Camcorders have 90 minutes of capacity.  |  IP: Logged Allison Parsons Jedi Master Film Handler Posts: 630 From: East Peoria, IL Registered: Oct 2004 posted 01-31-2008 11:25 AM                        Yes Lyle, that is exactly what I was asking! Just give me a simple answer on what sized memory card if one big enough is available to rich NY folk that live in high rise apartments overlooking Central Park.  |  IP: Logged Mike Schindler Phenomenal Film Handler Posts: 1039 From: Oak Park, IL, USA Registered: Jun 2002 posted 01-31-2008 01:40 PM                     I thought this movie was great. I love the clashing aesthetics of these fantastic events being captured in the most ordinary way. The writing is really clever and smart, and the sound mix is pretty awesome.  |  IP: Logged Mark Ogden Jedi Master Film Handler Posts: 943 From: Little Falls, N.J. Registered: Jun 99 posted 01-31-2008 03:10 PM                     It's difficult to say, Allison, without you're being more specific as to what recording codec you want to use and what kind of quality you expect. If you are using a Panasonic camera with P2 cards, and you want to record in the DVCPRO-HD format at 1080/60i, you are looking at about one gig of memory per minute (while David's math above is correct, you DO have to take the format's considerable inter-frame compression into consideration to give your question a practical answer). Since "Hud" is ostensibly holding an HVX-200, which has a dual card slot and can record seamlessly from one card to another, you are looking at two 32 gig cards in tandem to make 64 minutes, which is about the running of the film less credits. OBTW, each card is over $1000 each, but you did specify "rich New Yorkers". You can't do a 1080/24p record with this camera, so you don't save anything there. Recording 720/24p active-frame-only will require two 16 gig cards for about 80 minutes. Any of the various standard-definition formats would obviously need much less. All of these times are theoretical, though, as the camera also records in meta-data and other system information in addition to the video. Here's the thing, though, vis-a-vis Cloverfield. If you have seen the film you know that the party and the monster attack are being recorded over other footage, that of Rob and Liz and their day at Coney Island, and those scenes are shown from time to time as the dude starts and stops the camera. That means the whole thing is being done to tape, as you would not get this effect recording to card. A nit-picking point, to be sure, but there it is. - - - - - Having said all that, I enjoyed the movie very much. I grew up with the whole 1950s giant-monster cycle of films, this was a nice albeit differently done throwback to a much-loved genre. Certainly took the awful taste of the Godzilla remake out of my mouth. Didn't take them too long to put the camera up on eBay.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-31-2008 05:42 PM                     Mark, does that model camera also come with the night vision and phenomenal 5.1 microphone?  |  IP: Logged Chad Souder Jedi Master Film Handler Posts: 962 From: Waterloo, IA, USA Registered: Feb 2000 posted 01-31-2008 07:27 PM                     quote: Brad Miller I didn't know videocameras had night vision these days Ever see the Paris Hilton video?  |  IP: Logged Mike Schindler Phenomenal Film Handler Posts: 1039 From: Oak Park, IL, USA Registered: Jun 2002 posted 01-31-2008 07:43 PM                     Sadly, I was just thinking the same thing...  |  IP: Logged Mark Ogden Jedi Master Film Handler Posts: 943 From: Little Falls, N.J. Registered: Jun 99 posted 02-01-2008 02:42 AM                     It's a movie about a giant monster from outer space. The camera has to be accurate?  |  IP: Logged Lyle Romer Phenomenal Film Handler Posts: 1400 From: Davie, FL, USA Registered: May 2002 posted 02-01-2008 07:26 AM                     quote: Brad Miller Mark, does that model camera also come with the night vision and phenomenal 5.1 microphone? I meant to comment on that in my review. We're supposed to be watching recovered footage shot on an amateur camera yet the sound mix is incredibly directional and dynamic. Doesn't really fit.  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 02-01-2008 06:00 PM                        How did the cameras [spoiler]survive the nuke at the end?[/spoiler]  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-01-2008 06:07 PM                     Joe, If you had paid attention you would have heard and seen during the movie that it was a RAMDISK he was recording on, not tape. Also, did you notice that at the end of the movie(Cony Island) it actually showed the very begninning... IE: the Monster plunging into the sea from the clouds above... way in the distance beyond the blue boat that sails by???? Something else to ponder... How did the Columbia Astronauts video tape survive falling from 15 miles up in the sky? It was exposed to super high temperatures, G-forces, and impact that should have obliterated it. quote: Bobby Henderson The Doremi server used at most Carmike locations is RAID-based -likely U320 SCSI, but I don't know for sure. I would be surprised if it is SATA or SATA II RAID. 250 million bit per second sustained bandwidth is very practical for many RAID setups. By comparison uncompressed HD-SDI has a 1.485 Gb/sec bandwidth. Some RAID applications are able to handle that. The Dolby Show Store is capable of sustained data rates of about 220 mbps give or take a little bit. The data transfer rate is one of the self tests that the server goes through on boot up. The Doremi's I've seen don't clock anywhere near that speed although in fairness they may have been SATA 1 RAID 5 units. The Dolbys in this area are all STATA 2 Raid 5 units. BTW: RAID 5 sacrifices data speed a little bit for the redundancy and reliability it offers. To give you an idea of how powerful the Dolby Show Store is we installed two systems in a plex and someone accidentally deleted the "Cloverfield" show file off #3's Show Player. So they simply pulled up and ran the file that was in #4's Show Store but over in #3... The films had 30 minute staggered starting times and the RAID in #4's Show Store unit had no problems moving that much data for two theaters simultainously for nearly a days worth of showings. The RAID HD, and Ethernet port Activity Lights were a blinkin faster than I've ever seen... around Mach 3! After they built the show back up in #3 and played each show as normal from it's own server the "activity" lights calmed down to normal. Yes there were KDM's loaded in both theaters gear. I'm not sure the Doremi could pull this feat off as reliably. Mark  |  IP: Logged

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