Thread: Blackmagic Pocket Cinema 4K Camera

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  1. #1381  
    Senior Member Samuel H's Avatar
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    A couple of years ago, at work, I had an extremely expensive corporate NAS drive (around $100k) fall to its knees because I ran a model simulation 10 million times and stored the results in 10 million tiny files, which made the file system itself cramble (I'm speaking from memory, maybe the number is wrong). The IT people called me and begged me to either export my results to a single file or just zip the 10M files into one.

    10 million frames is 115 hours of footage and would take 40 TB on the p4k, so you're unlikely to get to those figures by shooting video. But maybe cheaper drives will have trouble sooner.
     

  2. #1382  
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    10M 1kb files or one 10gb file is the same size wise. Size on disk depends on file system unit allocation size. You probably had it set to something like 1 MB - then one 1kb file you exported took 1mb of space on disk.

    If you are using SSD's for editing it doesn't have much of a meaning speed wise since random reads are much faster than on HDD's. In terms of storage raw files should not eat much more space if you keep disk allocation size low.
     

  3. #1383  
    Senior Member Samuel H's Avatar
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    It wasn't a matter of file size, it was an issue with the file system itself. It's an NTFS drive so the max number of files is around 4k million and it was not a matter of getting close to the limit, it's just that when those master file tables get too big they can start to fall apart.

    I'm not saying this will happen with cDNG files, I'm just saying that having many files can potentially create issues. I still think I'll be a very happy p4k owner in a couple of months.
     

  4. #1384  
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    Quote Originally Posted by Samuel H View Post
    I still think I'll be a very happy p4k owner in a couple of months.
    But I just wanted to scare the crap out of everyone anyways.
     

  5. #1385  
    Senior Member Samuel H's Avatar
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    Well I'm not preordering because I want tests to see if there are any important issues before I buy the thing, so, I need others to buy it before I do XD
     

  6. #1386  
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    First peek at some Pocket 4k footage. http://www.bmcuser.com/showthread.ph...rom-Mark-Wyatt


     

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