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Today's Topics:
1. Re: How to programmatically detect unreachable cameras (Evuraan)
2. Re: How to programmatically detect unreachable cameras (Bau Dev)
3. PIR sensor interface to Motion (William B. Clay)
4. Re: Reliable system (Bau Dev)
----------------------------------------------------------------------
Message: 1
Date: Sun, 13 Sep 2020 19:35:51 -0700
From: Evuraan <[email protected]>
To: [email protected]
Subject: Re: [Motion-user] How to programmatically detect unreachable
cameras
Message-ID:
<ca+jjsor63q9jg63ggkg_jr9zgfs6rl7w+sciranebrs5+lk...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Answering my own question:
x1:/tmp$ wget -q http://pi4:8080/3/detection/connection -O -
Camera 3
Camera 3 Connection OK
x1:/tmp$ wget -q http://pi4:8080/5/detection/connection -O -
Camera 5
Camera 5 Lost connection
Looked inside web_text.c:
https://github.com/Motion-Project/motion/blob/master/src/webu_text.c#L809
snprintf(response,sizeof(response),
"<a href=/%s/detection/status>status</a><br>"
"<a href=/%s/detection/start>start</a><br>"
"<a href=/%s/detection/pause>pause</a><br>"
"<a href=/%s/detection/connection>connection</a><br>" //<---- this
,webui->uri_camid, webui->uri_camid
,webui->uri_camid, webui->uri_camid
);
On Sun, Sep 13, 2020 at 7:03 PM Evuraan <[email protected]> wrote:
>
> Hello,
>
> I've motion polling a number of IR cameras. Some of those are on WIFI
> and they often go unreachable for a variety of reasons.
>
> If I navigate to the webcontrol_port of my motion server, I'd see the
> grey image saying "UNABLE TO OPEN VIDEO DEVICE SINCE <TIMESTAMP>".
> I've attached a sample screenshot.
>
> Sometimes although I can reach a camera over HTTP, motion may still
> display the above notice until I restart the motion server.
>
> Is there a way I can programmatically determine how many of my video
> devices cannot be reached? Apparently motion knows the last timestamp
> a camera was last seen, if you can point me in the right direction
> that would be great.
>
> If X out of my Y cameras are unavailable, I am looking to automate restarts.
>
> Thanks in advance!
------------------------------
Message: 2
Date: Mon, 14 Sep 2020 09:00:52 +0200
From: Bau Dev <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] How to programmatically detect unreachable
cameras
Message-ID:
<cao-pi1szqvs_wuuvgmnv9b6yafmkd9runjqpzbdhvqkez6l...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Or you can use "on_camera_lost" event.
https://motion-project.github.io/motion_config.html#on_camera_lost
Le lun. 14 sept. 2020 ? 04:37, Evuraan <[email protected]> a ?crit :
> Answering my own question:
>
> x1:/tmp$ wget -q http://pi4:8080/3/detection/connection -O -
> Camera 3
> Camera 3 Connection OK
> x1:/tmp$ wget -q http://pi4:8080/5/detection/connection -O -
> Camera 5
> Camera 5 Lost connection
>
> Looked inside web_text.c:
> https://github.com/Motion-Project/motion/blob/master/src/webu_text.c#L809
>
> snprintf(response,sizeof(response),
> "<a href=/%s/detection/status>status</a><br>"
> "<a href=/%s/detection/start>start</a><br>"
> "<a href=/%s/detection/pause>pause</a><br>"
> "<a href=/%s/detection/connection>connection</a><br>" //<---- this
> ,webui->uri_camid, webui->uri_camid
> ,webui->uri_camid, webui->uri_camid
> );
>
>
>
> On Sun, Sep 13, 2020 at 7:03 PM Evuraan <[email protected]> wrote:
> >
> > Hello,
> >
> > I've motion polling a number of IR cameras. Some of those are on WIFI
> > and they often go unreachable for a variety of reasons.
> >
> > If I navigate to the webcontrol_port of my motion server, I'd see the
> > grey image saying "UNABLE TO OPEN VIDEO DEVICE SINCE <TIMESTAMP>".
> > I've attached a sample screenshot.
> >
> > Sometimes although I can reach a camera over HTTP, motion may still
> > display the above notice until I restart the motion server.
> >
> > Is there a way I can programmatically determine how many of my video
> > devices cannot be reached? Apparently motion knows the last timestamp
> > a camera was last seen, if you can point me in the right direction
> > that would be great.
> >
> > If X out of my Y cameras are unavailable, I am looking to automate
> restarts.
> >
> > Thanks in advance!
>
>
> _______________________________________________
> Motion-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/motion-user
> https://motion-project.github.io/
>
> Unsubscribe: https://lists.sourceforge.net/lists/options/motion-user
>
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Message: 3
Date: Mon, 14 Sep 2020 09:49:10 +0200
From: "William B. Clay" <[email protected]>
To: Motion discussion list <[email protected]>
Subject: [Motion-user] PIR sensor interface to Motion
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8; format=flowed
On 9/14/20 2:50 AM, Jim at ScopeStuff wrote:
> That absolutely works.? The IR attracts the flying critters, which
> attract the
> spiders.? The further away from the camera the better for the IR
> illuminators.
Excellent solution for a chronic problem I have, too.? Thanks for the
elegantly simple idea!
> A python program is checking for presence of the file that the
> shellscript
> writes.? It is also looking at the GPIO pins that the PIR and microwave
> motion sensors are hooked to.
<snip>
> Another possibility is to ask the Motion Gods to add a qualification
> input,
> from GPIO pins perhaps, for the saving of motion images.? Unless the pin
> has a "1" and not a "0" then a motion file won't be saved.? Or the Motion
> files are saved to one of two paths based on the polarity of the GPIO
> bit.
>
> Or perhaps add a conversion specifier in the tracking section like
> "%A = value of GPIO bit XYZ".? That could add a tag to the file name so
> the file could be used or discarded downstream of Motion.
Great ideas, but a very Rasberry-Pi-centric interface.? I added a
POSIX-based interface like this to the ancient motion 3.2.1 (still
running because of other extensive mods that I need -- chiefly separate
thread to batch and transmit DB transactions to a remote DBMS -- and the
newer versions added mostly stuff I don't need):
?*? 2012-10-17 wbc external alarm function, logically "ored" w/ video
motion detection via
?*???????????????? memory-mapped file /<pidfile dir>/mdT.mmap (T=thread
no.), containing
?*???????????????? a 1-char alarm status plus \0 terminator.? file must
be dynamically
?*???????????????? updated by separate program.? alarm status may be
included in
?*???????????????? event string formats as substitution symbol "%!" for
values:
?*???????????????? * "-" motion access to memory-mapped file failed
(see log at startup)
?*???????????????? * "0" external alarm program inactive or not implemented
?*???????????????? * "1" external alarm program operational, but no
alarm signaled
?*???????????????? * "2" external alarm signaled (only value
significant to this module)
?*???????????????? * "3" external alarm fault (as determined by
external alarm program)
In my case, the external alarm program is Python 2 running on a
bog-standard Debian Linux PC server in Python 2 using a USB-attached
Phidget 1203 Interface Kit
(https://www.phidgets.com/?tier=3&catid=2&pcid=1&prodid=1030). The only
tricky part is coding create/open/close/delete of the memory-mapped file
(man page mmap(2)) on both the Python script and motion executable sides
so that the proper values are seen by motion after any possible sequence
of start/stop/restart of the two components.
Once you've defined a new frame-related variable and substitution symbol
(e.g., %!), you can script about anything you need for post-processing
(but might not suffice for aiming at cats and giving letter carriers
safe passage).? I limit recorded events to 15 sec. (longer action
creates multiple events), and use the "%!" symbol in an on_event_end
script and on_event_end_sql config item (added) to determine what to do
with the related images/videos and how to categorize the event in the
motion DB (using new per-event table "incident").
-- Bill
------------------------------
Message: 4
Date: Mon, 14 Sep 2020 12:19:58 +0200
From: Bau Dev <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] Reliable system
Message-ID:
<cao-pi1tm1rabbehaeff-7+vz0dk62_tf4sjuub15wzfebh2...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Indeed, it sounds like a good idea!
We'll have to pull some more cables haha
Do you have any infrared projectors to recommend?
Baudev
Le lun. 14 sept. 2020 ? 01:07, David Powell <[email protected]> a ?crit :
> I have a similar problem and don't know how to fix it, but I do have an
> idea about the spiders.
>
> It seems that spiders (and bugs in general) are attracted to the IR light
> emitted by security cameras at night. I figure (and I have not yet tried
> this) that if you turn off or disable the infrared "night vision" on the
> camera, and put another IR source several feet away, perhaps you will have
> the same "night vision" functionality but the spiders will build their webs
> in front of the IR source instead of the camera.
>
> I plan to try this when I get a chance. It won't solve all the problems
> but may help some. Has anyone else tried it?
>
> David
>
>
> On 9/13/20 2:49 PM, Bau Dev wrote:
>
> Hello to all,
>
> If I allow myself to write here it is to have your ideas and feedback on
> motion. I've been using it for several months now but I can't get the
> desired result.
> I have installed my alarm system (outdoor cameras, indoor cameras, 433Mhz
> infrared detectors, siren, backup power supply, GSM shield and so on).
> I would like to have the most functional system possible. It is not
> conceivable to trigger the siren several times during the night for false
> positives ! But on the other hand, this siren must be triggered
> automatically during an intrusion. I can't keep my phone on all night to
> check what's going on.
>
> Today, in this alarm system I use among others a raspberry pi 3b+ with
> motion (for the 4 outdoor cameras). However I have some false positives
> that I can't avoid: mosquitoes that spend the night very close, water drops
> at night when it rains etc.. At night when it rains I can reach up to 200
> false positives. During the day, between 0 and 2 false positives. With so
> little reliability, I even managed to turn off the outside cameras
> finally...
> Here are the images of some false detections.
>
> [image: photo5915567089844860174.jpg]
> [image: photo5918052003303502838.jpg]
> [image: photo5918052003303502844.jpg]
> [image: photo5829970509054456810.jpg]
> [image: photo5832222308868142323.jpg]
>
> By varying the different parameters I can't get a correct system. I set a
> reasonable threshold (low enough to detect a human movement and high enough
> not to constantly have false positives). But a spider passing in front of
> the camera is finally impossible not to detect with the threshold (even
> with the threshold_maximum) ...
> I also activated the smart filter. It allows to avoid the movements of
> grasses, trees and so on.
> I think it's mandatory to add a human shape detection algorithm, don't
> you?
> If so, do you know any that have a reasonable execution time? Indeed, all
> the ones I tried take more than 30 sec to identify a human on a single
> image! (Obvious given the CPU of a raspberry). And does a USB dungle really
> worth it?
>
> On the other hand, taking a step back, I find that very few home security
> companies offer outdoor cameras. Or they are cameras you have to install
> yourself and therefore the feedback seems disappointing. Maybe that's a
> sign? Maybe we should only consider filming with outdoor cameras in order
> to have different angles in case of indoor intrusions (identified by
> infrared sensors which are more reliable)?
>
> What do you think about this?
> How do you do it?
>
> Thank you in advance for your ideas/feedback.
>
> Baudev
>
>
> _______________________________________________
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