SOLVED Seldom artefacts with veye-mipi-imx462
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Hello,
I am testing the camera for astronomical application.
The gstreamer pipeline is:
v4l2src io-mode=dmabuf device=/dev/video0 ! video/x-raw,format=UYVY,width=1920,height=1080,framerate=25/1 ! v4l2convert capture-io-mode=dmabuf output-io-mode=dmabuf ! videoscale ! video/x-raw,width=1280,height=720 ! appsink sync=1Ocassionaly, I get artefacts like the picture below. Any idea how to get rid of this?
(the green bar in the middle)Milan
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@milank
Are you using it on a Raspberry Pi? Can you tell me about the software and hardware configuration of your board? -
@veye_xumm
Yes, it is Pi4 4GB RAM$ uname -a
Linux raspberrypi 5.15.32-v7l+ #1537 SMP Wed Mar 30 17:15:45 BST 2022 armv7l GNU/Linux$ ./veye_mipi_i2c.sh -r -f hdver
hardware version is 0x 5
release date is 2020- 8-14$ modinfo veyecam2m
filename: /lib/modules/5.15.32-v7l+/kernel/drivers/media/i2c/veyecam2m.ko
license: GPL v2
description: veyecam2m sensor v4l2 driver
author: xumm <www.veye.cc>
srcversion: 39B6CA03CC15515713EC3FC
alias: of:NTCveye,veyecam2mC*
alias: of:NTCveye,veyecam2m
depends: v4l2-async,videodev,v4l2-fwnode,mc
intree: Y
name: veyecam2m
vermagic: 5.15.32-v7l SMP mod_unload modversions ARMv7 p2v8The capture code is taken from veye driver examples.
Milan
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@milank I suspect that the FFC cable is not connected well enough. You could try replacing the FFC cable with a new one, or re-plugging it.
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Thank you.
I reseated, no success.
I bought a new FFC cable, and sadly, the issue persists.Milan
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@milank
Hi, I can't judge remotely on this issue right now. Where did you order the camera ? Please private message me with the order number and I can arrange to get you a replacement. -
@veye_xumm
I have happened to turn-off the wifi and switch to ethernet, just to see if there is any effect. To my surprise, camera is now providing a picture without these artefacts.
No idea if this is just a HW conflict or RF interference on the FFC cable.Milan
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@milank
I think it was RF interference on the FFC cable.
