- Posts: 68
- Joined: Sun Jun 03, 2018 8:25 pm
- Real Name: Matt Williams
Sat Jul 28, 2018 11:41 am
I have a problem with using resolve with 4K footage. I have a fairly high spec system, that can handle most 4K footage with no problem at all. For example in premiere I can use multicam sequences with multiple tracks of 4K and it will all playback fine. In resolve dealing with 4K footage has also always been fine up to now. I have bought a decklink mini 4K card so I can output to a reference monitor. The problem I'm having is whenever I play clips in the colour tab, playback frame rate on the reference monitor is always 12 fps (frame rate of my project is 25 fps). Strangely this isn't an issue in the edit tab, where clips playback on the reference monitor at the correct frame rate (I read on another forum post that this is something to do with the edit tab dropping frames to maintain fps). Also if I disable UI overlays in preferences then I get the proper frame rate playback on the reference monitor, unfortunately this isn't an option for me as I need the UI overlays turned on otherwise the LUT I have for my reference monitor, also affects my GUI in the colour tab and affects my scopes.
So I'm wondering what can be done, I've read all the forums and posts where other people seem to be having similar problems, but I can't find a solution. I've been through every option in preferences and project settings that I can try and no matter what the frame rate on my 4K reference monitor is always the same at 12 fps stop I did read in one post someone said it was likely down to the graphics card not being able to handle it, as it was effectively having to output to 2 displays at once, the reference monitor and the GUI. This might go some way to explaining why the frame rate is always 12 fps as that is pretty much half the frame rate it should be (25 fps), and if it is having to display on two screens then maybe that halves performance. Interestingly the way it manifests is that it appears to play a bit on the GUI, and then a bit on the reference monitor, and then on the GUI, and so on and so on. So it stutters on both along at 12 fps. And so back to the other forum post I mentioned where they said it was likely down to the graphics card not being powerful enough, the graphics card I was using was a GTX 1070, and so I thought I would try a more powerful graphics card and have just bought a GTX 1080TI 11 GB which is meant to give approximately 40% performance boost. Having just tried this in my system, there is no difference whatsoever, the playback still stutters along at 12 fps on the reference monitor brackets exactly the same as I was getting with my lower spec graphics card).
As I say there are a lot of similar posts on this subject over the years, and I haven't read that many solutions. I think it might be useful to hear from people who are able to grade in 4K using the decklink card and have UI overlays turned on, and use a reference monitor, and who don't have these issues (in other words they are able to grade 4K without any slow stuttering frame rates on their reference monitor). I would love to know what set up people are using to achieve this. I assume it can't be that everybody is having this problem, so hopefully there is a solution!
So I'm wondering what can be done, I've read all the forums and posts where other people seem to be having similar problems, but I can't find a solution. I've been through every option in preferences and project settings that I can try and no matter what the frame rate on my 4K reference monitor is always the same at 12 fps stop I did read in one post someone said it was likely down to the graphics card not being able to handle it, as it was effectively having to output to 2 displays at once, the reference monitor and the GUI. This might go some way to explaining why the frame rate is always 12 fps as that is pretty much half the frame rate it should be (25 fps), and if it is having to display on two screens then maybe that halves performance. Interestingly the way it manifests is that it appears to play a bit on the GUI, and then a bit on the reference monitor, and then on the GUI, and so on and so on. So it stutters on both along at 12 fps. And so back to the other forum post I mentioned where they said it was likely down to the graphics card not being powerful enough, the graphics card I was using was a GTX 1070, and so I thought I would try a more powerful graphics card and have just bought a GTX 1080TI 11 GB which is meant to give approximately 40% performance boost. Having just tried this in my system, there is no difference whatsoever, the playback still stutters along at 12 fps on the reference monitor brackets exactly the same as I was getting with my lower spec graphics card).
As I say there are a lot of similar posts on this subject over the years, and I haven't read that many solutions. I think it might be useful to hear from people who are able to grade in 4K using the decklink card and have UI overlays turned on, and use a reference monitor, and who don't have these issues (in other words they are able to grade 4K without any slow stuttering frame rates on their reference monitor). I would love to know what set up people are using to achieve this. I assume it can't be that everybody is having this problem, so hopefully there is a solution!
