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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Making your own DCP's
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Jussi Siponen
Film Handler
Posts: 75
From: Mikkeli, Itä-Suomi, FINLAND
Registered: Jan 2010
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posted 04-01-2012 02:38 PM
quote: Tony Bandiera Jr
Also, any info in regards to system requirements (OS, Hard drive capacity, memory minimums, etc.) would be nice.
OS: Mac or Windows, depending on your personal preference
HD capacity: that depends on how large projects you are going to handle. Plan for about 550GB per hour for the uncompressed TIFF images used as input - possibly multiple times depending what kind of processing steps you take (scaling, padding, etc.).
Memory: 2-4GB should be enough. The limiting factor is usually how fast you can push data to/from disk or your CPU (if your disks are fast enough)
If you are not in a hurry, almost any current hardware will do. I can't really recommend using a laptop - CPUs, memory and especially hard drives tend to be painfully slow. Also hard drive space is going to be tight, unless you have external drives.
My workstation has a 3 GHz Intel Core i7 950, 4 cores (8 logical processors) and 4GB RAM. Nothing to see here, moving along...
The storage setup is a *bit* more elaborate:
- System volume: 150GB RAID1 (2 x 150GB)
- Scratch volume: 5.5TB RAID0 (4 x 1.4TB)
- Data volume: 1.4TB RAID1 (2 x 1.4TB)
Now with RAID0 you can't *ever* store anything you can't afford to lose in there. It's essentially a glorified C:\TEMP (or /tmp) directory where I store the temporary TIFF files.
DCP encoding reads from the scratch volume and writes the compressed data to the data volume. This way the compression software - Fraunhofer easyDCP - is CPU bound (all 4 cores are +98% busy) rather than I/O bound.
With this rig, encoding takes roughly 2.5x the play time. Here's the log for a 40 second clip:
Package Generation started at: 22:12:14 (1.4.2012)
Package Generation successfully finished at: 22:13:53 (1.4.2012)
Number of samples processed: 1001
Target path:T:/BLAH
Project Type: 2k
JPEG2000 bitrate: 150MBits/sec
Framerate: ( 24 / 1 )
Number of processed Trackfiles: 2
Packing method: InterOp
I bought this computer back in January 2010, so I'd expect the current hardware available either is or will soon be capable of real time encoding.
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Santi Parres
Film Handler
Posts: 2
From: Valencia, Valencia, Spain
Registered: Jul 2012
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posted 08-05-2012 05:03 AM
well, now I can answer myself: after exporting and processing again the wav files, it sounds perfectly (good bye, Evil). Maybe I had exported channels R and L as stereo, I can't remember how I did it.
A current "problem" with the video : when I test my 15 first seconds of DCP with dcpPlayer, the size is right, but testing with Stereoscopic, my film seems halfsized. Only when I apply double size, it appears as 1920 x 1080. ![[Confused]](confused.gif)
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