Hi,

@Ginger

Non consistent background noise between frames usually means power issues. The camera regulator don't have enough power to regulate the voltage.
So, the analogic/digital converter reference voltage wiggles.

@Pep

Thanks, once the issue understood, and a fix found, I will need your help for testing. But at this time, I have to figure out what's going on.
And, no, I'm not the master of the universe. I don't save lives, I just try to fix a driver But thanks for your kind words !


Ok, I sniffed AMD64/SV305PRO/USB3 (I never had issues with this combo)
It behave like the SV305

ffff943969cfe780 216190798 S Ci:4:002:0 s c0 d6 0160 0013 0001 1 <
ffff943969cfe780 216191387 C Ci:4:002:0 0 1 = 08
ffff943969cfecc0 216202281 S Ci:4:002:0 s c0 d0 0001 3000 0001 1 <
ffff943969cfecc0 216202743 C Ci:4:002:0 0 1 = 08
ffff943969cfecc0 216202797 S Ci:4:002:0 s c0 d0 0001 3002 0001 1 <
ffff943969cfecc0 216203280 C Ci:4:002:0 0 1 = 08
ffff943969cfe780 216203340 S Ci:4:002:0 s c0 d6 0001 0080 0001 1 <
ffff943969cfe780 216203841 C Ci:4:002:0 0 1 = 08
ffff943969cfe540 216203887 S Ci:4:002:0 s c0 d0 0000 3000 0001 1 <
ffff943969cfe540 216204393 C Ci:4:002:0 0 1 = 08
ffff943969cfef00 216204438 S Ci:4:002:0 s c0 d0 0000 3002 0001 1 <
ffff943969cfef00 216204943 C Ci:4:002:0 0 1 = 08
ffff943969cfef00 216204985 S Ci:4:002:0 s c0 d6 00e0 0013 0001 1 <
ffff943969cfef00 216205495 C Ci:4:002:0 0 1 = 08
ffff943969cfec00 217254835 C Bi:4:002:2 0 4147216 = adea2b04 00000000 01000000 00000000 01000100 01000100 01000100 01000200
ffff943969fbda80 217258874 S Bi:4:002:2 -115 4147216 <

I also sniffed the SV305PRO/Astro_DMX usb stream.
Astro_DMX seems to use the camera's "Streaming mode". I use the "Trigger mode". In my mind, the trigger mode is better suited for 1 - 2s exposure guide frames.

To be continued...

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