GT730 NVENC interference pattern

cybermaus

New Member
Hello all

on a tight budget, I recently bought a pre-owned GT730 with Keppler GPU to assist an ageing PC with camera encoding for my new electronics workbench microscope camera. This is a newer Keppler GK208 based GT730, so it does actually support NVENC, and I can select it and it does encode, and I do see the CPU drops and the GPU encode rise the task manager so it is being used.

However, it is unusable full of artefacts.
Not just regular compression artefacts, but some weird full screen interference pattern.
Given that this guy here has good results on his similar GK208 based GT730, something must be wrong.

When using h264 software encoder, the image is perfect, so I assume the incoming camera is good.
Also for this reason, I tried the desktop recorder, which indeed gives the same interference pattern

See below screenshots, I can also upload video somewhere but I suspect this is too large for here.
Also included are the OBS settings and the CPUZ-ID screenshot and driver version.
(Obviously I installed the latest drivers)

PS: I had to JPG the screenshot to get it small enough, so there is JPG fuzziness on top of the weird repeating interference pattern, but I thing the rough idea is clear, just in case I also added a cutout.
The OBS log also uploaded, as instructed in the sticky.
 

Attachments

  • CPUID_PU.PNG
    CPUID_PU.PNG
    108.4 KB · Views: 57
  • GPU_driver.PNG
    GPU_driver.PNG
    39.3 KB · Views: 55
  • NVENC (new) 1080p30.PNG
    NVENC (new) 1080p30.PNG
    19.6 KB · Views: 57
  • With_artefacts.jpg
    With_artefacts.jpg
    988.2 KB · Views: 59
  • With_artefacts cutout.png
    With_artefacts cutout.png
    337.9 KB · Views: 60
Top