Blackmagic Forum

Hi all.

Downloaded Davinci resolve yesterday. Thought I would check it out before buying a DJI Mavic Air or a Mavic pro II (if the rumors are real).

So after starting it up, the first message I get is that my GPU memory is full. So Im making some optimized media of an old DJI phantom 3 video I never made anything of. So far, so good. But as soon as I made a 30 sec clip, and tried to color grade it, it went wrong. The video suddenly looks like a messed up VHS tape with stripes and a flickering green field. You can barely see anything. The exported file looked the same.

I have an AMD Radeon HD 7900 series 3GB GDDR5. I know 3 GB is a bit low, but looking at youtube, some use the software with 1GB cards. Also it does not look like there is any issue about my GPU being weak. But more that it is not being used at all.

While color grading it only used 1-5% power while basically nothing happend.

Anyone got a clue what I can do about it?

What codec resolution are the source files? And what codec and resolution did you use for optimized media?

PeterMoretti wrote:What codec resolution are the source files? And what codec and resolution did you use for optimized media?

The source file is Mov. In 4k resolution.
I cant remember the name for the optimized media. DNxHRlb or something.

But I think the real issue lay somewhere else. I got the "GPU memory full" even before importing any media.

Its like the software dont want to use the GPU at all, and rather use the CPU. This morning I took a stress test on my GPU with a software called "fur burn". Look at my task manager. The 3D meter reaches 100%. So tried to download a video transcoder to see if the video encoding/decoding % would change. But seems like "any converter" use CPU insted of GPU?
As my lazy GPU laid back while the CPU did all the work.

Sent fra min G8141 via Tapatalk

Can you make a cellphone video of you starting up a blank project in Resolve and it giving you a GPU memory is full message? Then upload that to a site like Dropbox and post a link.

Also, just so you realize .MOV is really not a codec, it's a wrapper. Lots of different codecs can be wrapped as .MOV, for example H.264, DNxHD, DNxHR, Prores.

Good luck, as I do agree that the program *should* at the very least open properly with a 3GB video card. Also, be sure you are running the latest drivers for your video card.

Nord-Troll wrote:So tried to download a video transcoder to see if the video encoding/decoding % would change. But seems like "any converter" use CPU insted of GPU?
As my lazy GPU laid back while the CPU did all the work.

Most codecs are simply too hard to parallelize which is the strength of CUDA and OpenCL so usually they are handled by the CPU. Some GPUs have dedicated hardware encoding/decoding functionality but these are separate and dedicated hardware convertors.

Uninstalled resolve this morning and tried premiere pro and it works great. Installed resolve again now, to make a video of it crashing on me.

And ofcourse this time its dosent show any gpu message before after doing some color correction..

Sent fra min G8141 via Tapatalk

Well that is good news!

Would I be right in saying that Resolve does not fully utilise the GPU unless it is a NVidia card with CUDA. With an AMD it has to use Open GL ?

I have an Nvidia Quattro RTX 4000 Max-Q in my mobile with the latest drivers (461.40) and Resolve won't use it even though I set it up in preferences.

Shotcut saw it right away when I selected hardware acceleration and blazed away with the encode at 73Mb/s.

I thought the Nvidia drivers were supposed to be "certified" for Resolve. What...?

K

therapy80301 wrote:I have an Nvidia Quattro RTX 4000 Max-Q in my mobile with the latest drivers (461.40) and Resolve won't use it even though I set it up in preferences.

Shotcut saw it right away when I selected hardware acceleration and blazed away with the encode at 73Mb/s.

I thought the Nvidia drivers were supposed to be "certified" for Resolve. What...?

K

You need to be more specific, what are you trying to do and how do you know the GPU is not being utilized?
If you have the free version of Resolve, decoding and encoding video via GPU won't work, you need the paid Studio version.

PeterMoretti wrote:Good luck, as I do agree that the program *should* at the very least open properly with a 3GB video card.

The "New Features in DVR 17" PDF document states the following as Minimum System requirements:

Integrated GPU or discrete GPU with at least 2 GB of VRAM.

...so one would certainly think that a 3GB video card would work.

therapy80301 wrote:I have an Nvidia Quattro RTX 4000 Max-Q in my mobile with the latest drivers (461.40) and Resolve won't use it even though I set it up in preferences.

Shotcut saw it right away when I selected hardware acceleration and blazed away with the encode at 73Mb/s.

I thought the Nvidia drivers were supposed to be "certified" for Resolve. What...?

K

I guess that using the GPU for encoding H.264/H.265 is only for the paid version.

therapy80301 wrote:

therapy80301 wrote:I have an Nvidia Quattro RTX 4000 Max-Q in my mobile with the latest drivers (461.40) and Resolve won't use it even though I set it up in preferences.
Shotcut saw it right away when I selected hardware acceleration and blazed away with the encode at 73Mb/s.
I thought the Nvidia drivers were supposed to be "certified" for Resolve. What...?
K

I guess that using the GPU for encoding H.264/H.265 is only for the paid version.

Correct.

Peter Chamberlain wrote:

therapy80301 wrote:

therapy80301 wrote:I have an Nvidia Quattro RTX 4000 Max-Q in my mobile with the latest drivers (461.40) and Resolve won't use it even though I set it up in preferences.
Shotcut saw it right away when I selected hardware acceleration and blazed away with the encode at 73Mb/s.
I thought the Nvidia drivers were supposed to be "certified" for Resolve. What...?
K

I guess that using the GPU for encoding H.264/H.265 is only for the paid version.

Correct.

Does this affect scrubbing too or is that executed more by CPU/GPU 0 (Intel GPU)?

Thanks.

Scrubbing needs decoding. But you can transcode your footage before using it in Resolve.