- Posts: 458
- Joined: Fri Oct 04, 2019 3:32 pm
- Location: Germany
- Real Name: Noah Hähnel
Sat Apr 24, 2021 9:05 am
In Fusion Studio 17 (and Resolve 17 Fusion) the OpticalFlow tool was updated to use the faster OF from Resolve. Unfortunately, it is considerably worse than the now-called "Classic" mode. With this change, they removed the GPU acceleration for said "Classic"-mode, making it much slower than in release 16.
I am asking the devs to reconsider this as the "Advanced"-Mode produces worse results in most cases.
Especially small details are not interpolated correctly at all.
In this example, I am using a trails tool to create star trails with a timelapse. Using OF and Vector Motion Blur I can further smear the pixels to remove the stepping. Very simple task.
You might need to view the images in a new tab to see them bigger.
These are the results with the new "Advanced"-mode:
This renders around 2 frames per second, no tweaking of the settings produces good results.
This is the "Classic"-mode:
This renders around 1.5 frames per second because I can reduce the proxy to 5 and still get great results. But there are cases where I have to keep the proxy number higher, and in those, the GPU mode in F16 was greatly appreciated.
But this isn't the only case where the "Advanced"-mode is worse. I haven't actually found a use case where it produces better results than the "Classic"-mode. It's only faster, but probably not if the "Classic"-mode would get the GPU acceleration back.
While we're at it, the SpeedWarp mode in Resolves Edit page produces incredibly great results. This would be a great addition to Fusions OpticalFlow toolset. I can live with the slow speed for such good results, the only reason I'm complaining about the speed of the "Classic"-mode is because it was crippled on purpose or oversight.
I am asking the devs to reconsider this as the "Advanced"-Mode produces worse results in most cases.
Especially small details are not interpolated correctly at all.
In this example, I am using a trails tool to create star trails with a timelapse. Using OF and Vector Motion Blur I can further smear the pixels to remove the stepping. Very simple task.
You might need to view the images in a new tab to see them bigger.
These are the results with the new "Advanced"-mode:
- Advanced_OF.jpg (49.18 KiB) Viewed 482 times
This renders around 2 frames per second, no tweaking of the settings produces good results.
This is the "Classic"-mode:
- Classic_OF.jpg (41.65 KiB) Viewed 482 times
This renders around 1.5 frames per second because I can reduce the proxy to 5 and still get great results. But there are cases where I have to keep the proxy number higher, and in those, the GPU mode in F16 was greatly appreciated.
But this isn't the only case where the "Advanced"-mode is worse. I haven't actually found a use case where it produces better results than the "Classic"-mode. It's only faster, but probably not if the "Classic"-mode would get the GPU acceleration back.
While we're at it, the SpeedWarp mode in Resolves Edit page produces incredibly great results. This would be a great addition to Fusions OpticalFlow toolset. I can live with the slow speed for such good results, the only reason I'm complaining about the speed of the "Classic"-mode is because it was crippled on purpose or oversight.