4K video requirements

Forum|Forum|9 years ago
March 10, 2017
2 replies
2173 views

Hi,

I'm working on Premiere Pro on both Windows 10 (64-bit) an d Macboook, but I still have a lot of issue with 4K footage from my Sony A7S II.

Since my Macbook (15" 2012, with an i7) doesn't have a dedicated GPU (just the 1,5 GB integrated one), I purchased a GTX 1060 6 GB to match with my Windows pc with an i3 3250 3,5 GHz and 16 GB of RAM. I went through the Adobe Premiere requirements and everything was fine, but when it comes to playback my footage is very laggy! Even with the 1/4 res, and after rendering the footage, the issue remains.

Windows 10 is up to date, GPU drivers as well.

My question is: is the problem the CPU? I still didn't get what is important for editing, someone says it's the CPU, others indicates the GPU.

What can I buy for work smoothly (staying as low as possible with budget)? I'll keep the GPU, but I'll purchase a new CPU along with a new motherboard (right now I'm on an Asus P8Z77-V LX) if that's the problem!

Thanks a lot guys!

This topic has been closed for replies.

R Neil Haugen

Legend

Just listened yesterday to a podcast with Eric Bowens, quite a knowledgeable fellow on codecs & computers for video post.

He commented that different types of codecs need different hardware ... H.264, especially in 4k and up, requires a really hot CPU with both a good number of cores/threads and a fast processing speed and plenty of fast RAM, so it can do the process that is required: read/partial-process/store in RAM/read the next bit/partial process/recall from RAM/finish process ... all for a few frames at a time on and on rinse & repeat. The way frames are stored as partials with other data from other frames needed to complete any frame is a total CPU/RAM/gHz suck.

Codecs like Cineform or DNxHD/R and ProRes that are all "complete frame" codecs put vastly less stress on a CPU.

And ... he said that DNxHR is a completely new design codec, and far more optimized for 4k & up than even ProRes.

So the best choices would be the Cineform that Jim suggests or DNxHR.

Neil

Everyone's mileage always varies ...

E

excited_Genie16B8

Legend

I recommend using proxies for all H.264 media. Use the included Cineform presets. You should see a very noticeable improvement.

YouTube has tutorials.