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Today's Topics:
1. Re: Need help with motion config in term of automatic
brightness adjustment (chuck elliot)
2. Re: Need help with motion config in term of automatic
brightness adjustment (Alan Clifford)
3. Re: Need help with motion config in term of automatic
brightness adjustment (Markus Buscher)
----------------------------------------------------------------------
Message: 1
Date: Fri, 29 Jan 2021 22:29:58 +0000
From: chuck elliot <c.ell...@pobox.com>
To: motion-user@lists.sourceforge.net
Subject: Re: [Motion-user] Need help with motion config in term of
automatic brightness adjustment
Message-ID: <38e2ce66-635f-b64b-8d33-312f92985...@pobox.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
'sounds like your cam has built in auto-exposure so
motion's auto_brightness is not for you. You could
investigate what is possible with vid_control_params
for your device - see log output with motion -d 7
for what might be available.
CE.
On 29/01/2021 4:26 pm, Markus Buscher wrote:
> Hello everyone,
> i need a bit of help with the motion config and the Raspberry Pi Cam
> module. It is working good so far, but there's one thing i dont get
> working properly. The moment the motion service is started it seems to
> automatically adjust the brightness of the picture to a good factor
> although the auto_brightness parameter is set to "off". This adjustment
> seems to stay saved as long as the motion service isn't restarted.
>
> If i start motion at day time, the picture is perfectly adjusted for
> that particular moment, but gets really dark at dusk, nearly black. If i
> then restart motion at dusk the picture gets brighter, but returning to
> daylight the picture is too bright, nearly complete white. If i restart
> motion again everything repeats. Good at daylight, too dark at dusk.
> Good at dusk, too bright at daylight. I know, the cam module isnt
> capable of night vision, but what i'm struggling with is, that the
> brightness adjustment seems to be static as long as motion isnt restarted.
>
> I added this picture for explanation:
> https://imgur.com/a/FZz0jtq
> If you look especially at picture C and D, you see the brightness
> difference after the restart.
>
> Is it possible to let motion adjust the brightness constantly? I already
> found the configuration parameter auto_brightness. But turning this
> option on results in completly white pictures. It's not working properly
> and I can't tell why. And restarting motion every few minutes isnt a
> solution.
>
> Maybe this is some kind of really stupid noob question, but i couldn't
> find the solution. I also added my motion.conf, if it is needed for insight.
>
> Thanks and best regards
> Markus
>
>
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Message: 2
Date: Fri, 29 Jan 2021 23:44:05 +0000 (GMT)
From: Alan Clifford <motion-user-l...@clifford.ac>
To: motion-user@lists.sourceforge.net
Subject: Re: [Motion-user] Need help with motion config in term of
automatic brightness adjustment
Message-ID: <alpine.osx.2.03.2101292337350.40...@clifford.ac>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
I have a small camera from Pimoroni on my Pi zero W so it might not be the
same.
I have auto-brightness off like you but have brightness set to 127. You
have 0.
Alan
--
Markus Buscher wrote to motion-user@lists.sourceforge.net
[at 17:26 (+0100) on Friday, 29th January, 2021]:
> Hello everyone,
> i need a bit of help with the motion config and the Raspberry Pi Cam
> module. It is working good so far, but there's one thing i dont get
> working properly. The moment the motion service is started it seems to
> automatically adjust the brightness of the picture to a good factor
> although the auto_brightness parameter is set to "off". This adjustment
> seems to stay saved as long as the motion service isn't restarted.
>
------------------------------
Message: 3
Date: Sat, 30 Jan 2021 11:06:15 +0100
From: Markus Buscher <blackpanther.onl...@gmx.de>
To: motion-user@lists.sourceforge.net
Subject: Re: [Motion-user] Need help with motion config in term of
automatic brightness adjustment
Message-ID: <61edc571-25c8-ae4f-74c1-d75586f23...@gmx.de>
Content-Type: text/plain; charset=utf-8
> I have a small camera from Pimoroni on my Pi zero W so it might not be
> the same. I have auto-brightness off like you but have brightness set
> to 127.? You have 0. Alan
Hi Alan,
i'll tried that setting too, mostly resulting in too bright images, but
I'll give it a try again!
> 'sounds like your cam has built in auto-exposure so motion's
> auto_brightness is not for you. You could investigate what is possible
> with vid_control_params for your device - see log output with motion
> -d 7 for what might be available. CE.
Hi Chuck,
i increased the log level to INF to get that output, but all i got was this:
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_get_capability:
> ------------------------
> cap.driver: "bm2835 mmal"
> cap.card: "mmal service 16.1"
> cap.bus_info: "platform:bcm2835-v4l2"
> cap.capabilities=0x85200005
> ------------------------
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_get_capability: - VIDEO_CAPTURE
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_get_capability: - VIDEO_OVERLAY
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_get_capability: - READWRITE
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_get_capability: - STREAMING
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_select_input: name =
> "Camera 0", type 0x00000002, status 00000000
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_select_input: - CAMERA
> [1:ml1] [WRN] [VID] [Jan 30 10:23:55] v4l2_select_input: Device
> doesn't support VIDIOC_G_STD
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_do_set_pix_format: Testing
> palette YUYV (1024x768)
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_do_set_pix_format: Using
> palette YUYV (1024x768) bytesperlines 2048 sizeimage 1572864
> colorspace 00000001
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls: found
> control 0x00980900, "Brightness", range 0,100
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls:??????
> "Brightness", default 50, current 50
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls: found
> control 0x00980901, "Contrast", range -100,100
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls:??????
> "Contrast", default 0, current 0
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls: found
> control 0x00980902, "Saturation", range -100,100
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls:??????
> "Saturation", default 0, current 0
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls: found
> control 0x00980918, "Power Line Frequency", range 0,3
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls:?????? "Power
> Line Frequency", default 1, current 1
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls: found
> control 0x0098090e, "Red Balance", range 1,7999
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls:?????? "Red
> Balance", default 1000, current 1000
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls: found
> control 0x0098090f, "Blue Balance", range 1,7999
> [1:ml1] [NTC] [VID] [Jan 30 10:23:55] v4l2_scan_controls:?????? "Blue
> Balance", default 1000, current 1000
> [1:ml1] [NTC] [VID] [Jan 30 10:23:56] vid_v4lx_start: Using V4L2
> [1:ml1] [NTC] [ALL] [Jan 30 10:23:56] image_ring_resize: Resizing
> pre_capture buffer to 1 items
> [1:ml1] [NTC] [VID] [Jan 30 10:23:56] v4l2_set_control: setting
> control "Brightness" to 49 (ret 0 )
It is not looking like the output mentioned in the motion documentation.
Can't say what to do with these informations. Any suggestion?
Markus
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