5 Replies Latest reply on Apr 26, 2014 9:19 AM by Bill Gehrke

    Anyone working or editing 4K videos?

    Sebastian676 Level 1

      Hi, i'm working at a Planetarium and we're making 4K FullDome productions, but the technology we got here is pretty new so we're searching for a Pc able to run, and capable to preview everything we make and create on 4K FullDome (4096x4096) We already have a lot of material, but i'm trying to edit it and i can't since the video lags a lot on preview (even at low resolutions) and then the output video, even if i render it at low resolution, weirdly enough, the software even renders the error, so we are not able to edit anything yet, at least not like any 2K video (because we also make those, but that's pretty easy compared to 4K videos that can't even be previewed, but the videos aren't corrupted, i also can open them and the videos appears to be fine)


      Please, i really need help with this... We will get a new computer in like weeks, and here are the specifications:



      HP Z820 RMT (Rackable minitower), 850W 88% Efficient wide-ranging.


      - Procesador Intel Xeon E5-2650v2 EightCore 2.6 GHz, 20M cache, DDR-1866 memory, 8.0GT/s QPI, HT, Turbo Boost (3.4GHz), HT, 95W.

      - ChipSet Intel C602.

      - Memory 8GB (2x4GB), Max. 512GB, DDR3-1866 ECC RAM 1CPU (16 Slot Dimm, 8 por CPU).

      - Solid Disk 128GB (SSD), Disco 1TB SATA 6Gb/s 7200rpm.

      - Disk Controllers: Integrated 2-channel SATA 6.0Gb/sec controller and Integrated 4-channel 3.0Gb/sec controllers with RAID 0, 1, 5, 10 and NCQ. (Factory integrated RAID is Microsoft Windows only).

      - Red Controllers: Integrated Intel 82579 and 82574 Controllers.

      - 2 RJ-45 to integrated Gigabit LAN ports.

      - 16X DVD+-RW SuperMulti SATA 1st Drive.

      - Graphics NVIDIA Quadro K4000 3GB GDDR5 Graphics PCI Express 2.0 x16, Connectors 1 DL-DVI(I) output, 2 DisplayPort outputs,

      - Windows 8 Pro DG to Windows 7 Pro 64Bit, HP ProtecTools, HP Chasis Intrusion Sensor.


      I hope with a Pc like that we can make 4K FullDome shows, because for now it's pretty difficult.

      If someone knows if this Computer will work or if its good for working 4K material into the software, please tell me.


      Thanks in advance.


        • 1. Re: Anyone working or editing 4K videos?
          R Neil Haugen Adobe Community Professional & MVP

          Right off the bat you've got two problems that I can spot ... RAM first, for video work 8 gigs is pretty minimalist, let alone wanting to work in 4k. 16 gigs would be the minimum I'd suggest ... more is better.


          Next, it looks like you're only planning on two discs ... this is a HUGE hardware bottleneck. The video programs handle complex program instructions through complex utilization of the computer's OS, massive files of footage constantly going in/out through the CPU/GPU & motherboard connections, create & use large cache files for temporary storage of processing, and write out massive files when rendering.


          Doing that all on two discs makes the rest of the hardware nearly irrelevant.


          Minimum four internal high-speed discs, five is better, for decent video processing.


          D1 --- OS/Programs (that 128gb SSD would be good here)

          D2 --- CACHE only! (another 60/120gb SSD is wonderful)

          D3 --- Footage (1.5/2-T fast hard-drive)

          D4 --- Project files for PrPre, Ae/fx, Speedgrade (good size fast hard-drive)

          D5 --- render-out disc (large FAST drive, maybe two in a RAID 0 array for simple write-speed)

          • 2. Re: Anyone working or editing 4K videos?
            Jim_Simon Level 9

            [Moved to the Hardware forum.]

            1 person found this helpful
            • 3. Re: Anyone working or editing 4K videos?
              Bill Gehrke Most Valuable Participant

              I do not know what the bit rate on 4k x 4k raw is but you are going to need a very fast RAID array to handle it.  Quick estimate off the top of my head is at least 500MB/sec.

              1 person found this helpful
              • 4. Re: Anyone working or editing 4K videos?
                cc_merchant Level 4

                See Tweakers Page and all the articles there.


                Shortcomings are:


                • Low clock speed of the CPU's.
                • Not enough memory. With 16 cores you need at least 32 GB (2 GB per core). Better 64 GB for 4K material.
                • Not enough disks and no dedicated raid controller. On-board controller is not useable for parity raid.
                • Not enough VRAM on the K4000 for 4K editing and pretty slow.
                1 person found this helpful
                • 5. Re: Anyone working or editing 4K videos?
                  Bill Gehrke Most Valuable Participant

                  I do not know the total size of your projects are, but I just found an excellent very fast SSD that does not require SATA III interface as it uses a direct PCIe bus connection.  If you have a PCIe version 2 2-lane slot available this SSD plugs into it and then format it just like one of your regular disk drives and you have a super speed disk drive.  No setting up RAID is necessary.  But if you try this and are able to put all you project file on it you will find a major improvement


                  Here is the real amazing performance that you get:



                  Below is the write performance from HD Tune and more importantly with our real world application Premiere Pro BenchMark (PPBM7) Disk I/O write time test I measured 66 seconds or a real write time transfer rate of 562 MB/second!  This was in my older x58 motherboard.



                  The Plextor drive that I have is the 256 GB version it also comes in 128 GB (slower write speeds) and a 512 GB version.  The Plextor M6e 256 GB is $300 at NewEgg.  The 512 GB unit is $550

                  1 person found this helpful