black screen with Elgato Game Capture HD - sometimes

[meshko]

So my steup used to work fine.
Then I did something (unplugged Elgato and installed some updates, both Windows and OBS) and now i have this weird problem.
I start OBS from a script at scheduled times. When it starts, the video stream is just black. I try to exit from OBS and it hangs. I then kill it forcefully and start again and it works fine.
When I run the same commnd that the script run manually it works fine.
Log attached.

 

[qhobbes]

1. One of your audio devices has a sample rate that doesn't match the OBS sample rate. This can result in audio drift over time or sound distortion. Check your audio devices in Windows settings (both Playback and Recording) and ensure the Default Format (under Advanced) is consistent. 48000 Hz is recommended.
OBS Sample Rate: 48000 Hz
Remote Audio: 44100 Hz
2. Run OBS as Admin. To run OBS as Administrator, right click on the OBS shortcut, properties, advanced, check box, ok, apply, ok.
3. Having the YUV Color range set to "Full" will cause playback issues in certain browsers and on various video platforms. Shadows, highlights and color will look off. In OBS, go to "Settings -> Advanced" and set "YUV Color Range" back to "Limited".
4. Set the Video Format on your Elgato to NV12.

If still having issues, post new log.

 

[meshko]

Remote audio outut is from my Remote Desktop connection; it is not used in streaming. I'm streaming audio that's coming from Elgato on the same HDMI.
I did fix color range but I can;t figure out how to change video format on elgato.

 

[meshko]

I tried running this as administrator and now I get this error when I try running it :
'C:\\Program Files\\obs-studio\\bin\\64bit\\obs64.exe', '--startstreaming', '--disable-shutdown-check'] in C:\Program Files\obs-studio\bin\64bit
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Failed to start streaming
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Starting the output failed. Please check the log for details.

Note: If you are using the NVENC or AMD encoders, make sure your video drivers are up to date.
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OK
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(but a few seconds later video does show up in the preview part of the OBS window... but stream doesnt start and once i click OK it just exits).
Again, this used to work just fine few weeks ago.