GH3 GH4 Premiere editing?

rawfa

rawfa

Veteran
Hey guys,

I´ve been following the latest developments on the GH4 and I´m very curious about what kind of machine would one need to edit 4096 x 2160 (24p), 3840 x 2160 (24p) or even 1920 x 1080 (24p) at 200 Mbps on Adobe Premiere. I have an Asus G75vw, I7 3610qm, 16gb Ram (it can go up to 32gb), 2 750gb hybrid Hdd, Full Hd 660m.
 
I'm running the Moon Trial 7 patch in the GH2, recording at 150 Mb/s I-frame. I can edit this material no problem using an i7 920, 12 GB RAM. I expect the 200 Mb/s I-frame will perform similarly.

Having said that, I would like to upgrade to the 4770K and 32 GB RAM.

More power is always better. :happy:
 
Hey Jim, I am about to start working with larger files myself moving from AVCHD to ProRes. I have a quad core HP Z400 with 12GB RAM and it has worked great with AVCHD. That being said, my computer was purchased right before USB 3.0 came on the scene. So because of the amount of different projects I have been doing I have been using External Harddrives that are 3.0 compatible but being run as USB 2.0. Have you tried editing those files this way and does it hold up? Thanks for the info!
 
AVCHD and LongGOP/IPB compression in general (like the internal 4k/UHD modes on the GH4 use) takes a lot more CPU or GPU power than All-I modes. You're basically trading bandwith or space for computer power. How much exactly that will be affected by quadrupling the resolution I'm not sure though. I have a feeling it's not linear though, so probably will NOT require quadruple the computing power.
 
Hi guys, I have been using the GH3 since last December and love it. The GH4 can't get here soon enough BUT, the BM Production camera is also calling my name. How are you going to deal with ProRes on a PC based machine. I am also on CS6 with a PC so ProRes is a problem and added expense if I have to switch to a Mac.

Thanks


Wayne Mann
www.HeliCamHDmedia.com
 
No problem, ashclever.

Wayne, the main PC editing software should all be able to read and edit Prores files fine. At least Vegas has for years, so I'm sure Premiere can as well. I believe that they just rely on your Quicktime installation for the codecs. No PC editing software that I know, however, can RENDER to Prores. I've heard that perhaps Apple doesn't allow their Prores codec to be licensed to PCs, but I've also heard it implied that the licensing process is just difficult (and perhaps expensive).
 
rawfa said:
... I´m very curious about what kind of machine would one need to edit 4096 x 2160 (24p), 3840 x 2160 (24p)..... on Adobe Premiere. I have an Asus G75vw, I7 3610qm, 16gb Ram (it can go up to 32gb)...
Click to expand...
.

I suppose for simple A/B cuts it could be enough. But as soon you want to do some color grading it will most likely be a pain in the ass. I have a similar machine (Dell i7-4770, 16 GB RAM, Nvidia GTX 660) and I hope that the cuda acceleration of the graphic card can help quite a bit. Perhaps somebody has a few 4k original files of already existing 4K cameras (Canon 1Dc, Sony AX1...) and can upload it somewhere to do some tests with PP (I have CS6). I know it´s not the same but perhaps we will get an impresssion how difficult a 4k-edit could be.....
 
Last edited:
WayneMann said:
How are you going to deal with ProRes on a PC based machine.
Click to expand...

I'm not a Mac fan, so...I just won't deal with it, myself. I find another option - like DNxHD in the MXF wrapper, or like MP4 on the new GH4. If no other suitable options exist, I just won't buy that device.
 
Shenan said:
AVCHD and LongGOP/IPB compression in general takes a lot more CPU or GPU power than All-I modes.
Click to expand...

I don't find that to be the case. They both bounce around at roughly 40% on my i7 920 during playback. (If anything the GOP stuff tends towards a bit less than the I-frame stuff.)
 
Jim, that's most likely because all/most video cards for several years now have had hardware acceleration for mpeg2 and h.264 playback, so your CPU is not being hit for the actual work of unpacking h.264, for example.
 
I have mine preordered and will be using it with Adobe CC on a few machines. At work I'm using a 2,1 mac pro dual quad 3.0, 10gb ram, x1900 system(hopefully upgrading to new mac pro this year). I will also be testing on my 2012 MBP retina 16gb 650m ram as well as my Win7 i7 920 16gb ram gtx 780. I'm guessing out of the 3 my PC will have the performance edge from the GPU power. It will be interesting to see how the new mac pro does in Premiere CC with GH4's various formats.
 
Shenan said:
Jim, that's most likely because all/most video cards for several years now have had hardware acceleration for mpeg2 and h.264 playback, so your CPU is not being hit for the actual work of unpacking h.264, for example.
Click to expand...

That is not correct. Premiere Pro uses only the CPU for decoding and playback (assuming a matching sequence.)
 
Weird, I had not heard that. Why would they do that? Maybe that's why Vegas Pro seems to handle AVCHD so much more smoothly on lower end systems...
 
Jim Simon said:
That is not correct. Premiere Pro uses only the CPU for decoding and playback (assuming a matching sequence.)
Click to expand...

I have an older Mac 5,1 tower with Premiere Pro CC. When using heavily graded AVCHD footage from my GH3, my Mac would slow down a bit, so I'd set my playback resolution to 1/4. After I added an old Nvidia Quadro 4800 card, the performance was greatly improved.
 
You must log in or register to reply here.
Back
Top