- Posts: 11
- Joined: Sat Aug 15, 2020 9:54 am
- Real Name: Sebastian Reategui
Hi,
Looking for some guidance on what to troubleshoot next to solve this.
Background: I receive coloured timelines as DRPs from a colleague, and load them on this machine to render them. Their own machine renders the footage fine with no artifacts at all.
Issue:
- At times, when rendering a timeline, artifacts will appear on the rendered image.
- Coloured dots, black spotches, sometimes vertical lines.
- Almost always toward the top edge of frame.
- Never the same frame twice, occurs at different random moments throughout the timeline.
- Occurs always in the rendered out image, but infrequently in the Colour panel in Resolve itself.
See attached images. In my testing I ranked them as "severe", "slight" or no artifacts.
Source media: BRAW from UMP 4.6K, @ 4.6K 8:1; AND Sony Venice XOCN LT 4K UHD
Source media location: Samsung 860 EVO 2TB NVME
Rendering format: 1920 x 1080, DPX 10-bit
CPU: Intel i9-9900K @ Stock 3.6 GHz
RAM: 32 GB DDR4
GPU: Nvidia RTX 2070 8GB VRAM
GPU Driver: Studio 451.77
OS: Windows 10 Home 64bit (Version 2004, OS Build 19041.388)
DaVinci Resolve Studio (16.2.4.016)
Enabling or disabling any of the below makes no difference, and will still result in a defective image:
- Use GPU for BRAW decoding
- Performance Mode
- GPU Processing Mode, Auto, Manual, OpenCL or CUDA
- Use display GPU for compute
- Nodes with Grain
Disabling the below will result in a clean rendered image:
- Nodes with Noise Reduction
- All grade nodes (but of course defeating my use case)
Noise Reduction is so far, the only variable that when bypassed on a per-clip basis, makes the artifacting disappear completely and the image renders fine.
Does anyone have any ideas? Is the GPU bust?
Final comments:
- I've had the issue on this machine since early January, where I was rendering BRAW media to DNxHD 36 proxies, and had identical artifacting.
- Interestingly, however, I did not use any NR nodes at that time, just a 3D LUT Film to Extended Video V4.
- The issue has occurred before and after system restarts, and an OS reinstall.
Looking for some guidance on what to troubleshoot next to solve this.
Background: I receive coloured timelines as DRPs from a colleague, and load them on this machine to render them. Their own machine renders the footage fine with no artifacts at all.
Issue:
- At times, when rendering a timeline, artifacts will appear on the rendered image.
- Coloured dots, black spotches, sometimes vertical lines.
- Almost always toward the top edge of frame.
- Never the same frame twice, occurs at different random moments throughout the timeline.
- Occurs always in the rendered out image, but infrequently in the Colour panel in Resolve itself.
- 20200815_seb_sample_1_braw_severe.jpg (58.17 KiB) Viewed 2883 times
See attached images. In my testing I ranked them as "severe", "slight" or no artifacts.
Source media: BRAW from UMP 4.6K, @ 4.6K 8:1; AND Sony Venice XOCN LT 4K UHD
Source media location: Samsung 860 EVO 2TB NVME
Rendering format: 1920 x 1080, DPX 10-bit
CPU: Intel i9-9900K @ Stock 3.6 GHz
RAM: 32 GB DDR4
GPU: Nvidia RTX 2070 8GB VRAM
GPU Driver: Studio 451.77
OS: Windows 10 Home 64bit (Version 2004, OS Build 19041.388)
DaVinci Resolve Studio (16.2.4.016)
Enabling or disabling any of the below makes no difference, and will still result in a defective image:
- Use GPU for BRAW decoding
- Performance Mode
- GPU Processing Mode, Auto, Manual, OpenCL or CUDA
- Use display GPU for compute
- Nodes with Grain
Disabling the below will result in a clean rendered image:
- Nodes with Noise Reduction
- All grade nodes (but of course defeating my use case)
Noise Reduction is so far, the only variable that when bypassed on a per-clip basis, makes the artifacting disappear completely and the image renders fine.
Does anyone have any ideas? Is the GPU bust?
Final comments:
- I've had the issue on this machine since early January, where I was rendering BRAW media to DNxHD 36 proxies, and had identical artifacting.
- Interestingly, however, I did not use any NR nodes at that time, just a 3D LUT Film to Extended Video V4.
- The issue has occurred before and after system restarts, and an OS reinstall.
- Attachments
-
- 20200815_seb_table_results.PNG (87.37 KiB) Viewed 2883 times
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- 20200815_seb_sample_2_xocn_severe.jpg (35.86 KiB) Viewed 2883 times