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Today's Topics:
1. Recording Skip (Barry Martin)
2. Re: Recording Skip (jmb)
3. Re: Recording Skip (Barry Martin)
----------------------------------------------------------------------
Message: 1
Date: Sat, 12 Apr 2025 10:05:49 -0500
From: Barry Martin <[email protected]>
To: [email protected]
Subject: [Motion-user] Recording Skip
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi!
?Slightly? off-topic but involving my Motion cameras. Randomly the
recording will skip several seconds. There is motion going on, so should
record, but while the motion is occurring (and being recorded) the video
will skip several seconds: no grey, no pixelation, just as if someone
took scissors to the film (showing my age! <g>). Does not occur
constantly/consistently.
Appears has something to do with either the WiFi (5G) between the Motion
units (so RF transmission/reception) and/or the actual recording to the
hard drive on the NAS. Looking for a clue how to figure out and
hopefully correct the problem. Yesterday checked and the glitch occurred
on two cameras with overlapping fields of view and recording simultaneously:
Unit #201 14:15:41 <skip> 14:16:25
Unit #202 14:15:43 <skip> 14:16:25
Nothing significant about the time; nobody near the Motion units nor
WiFi router, so not like someone walked in the RF path. LIS, the glitch
occurs randomly; just listed the times should the ~45 seconds of missing
recording have a potential troubleshooting meaning. (I don?t know the
times of previous glitches.)
Both units:
*
Motion Version 4.5.1
*
Raspberry Pi 4B, with one USB camera each
*
Individual power supply on UPS
*
Uptime: (several days ago)
The WiFi and NAS are also on their own UPSs, and no power issues.
Thanks for the help!
Barry
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Message: 2
Date: Sat, 12 Apr 2025 11:50:06 -0400
From: jmb <[email protected]>
To: [email protected]
Subject: Re: [Motion-user] Recording Skip
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hello,
Try using 'top' to monitor the system load.? Maybe 'disk' writes (to the
NAS) are piling up.? Maybe some background process is consuming
excessive CPU?? Did it start after a recent 'sudo aptitude safe-update'?
Hope this helps
On 4/12/25 11:05, Barry Martin wrote:
>
> Hi!
>
> ?Slightly? off-topic but involving my Motion cameras. Randomly the
> recording will skip several seconds. There is motion going on, so
> should record, but while the motion is occurring (and being recorded)
> the video will skip several seconds: no grey, no pixelation, just as
> if someone took scissors to the film (showing my age! <g>). Does not
> occur constantly/consistently.
>
> Appears has something to do with either the WiFi (5G) between the
> Motion units (so RF transmission/reception) and/or the actual
> recording to the hard drive on the NAS. Looking for a clue how to
> figure out and hopefully correct the problem. Yesterday checked and
> the glitch occurred on two cameras with overlapping fields of view and
> recording simultaneously:
>
> Unit #201 14:15:41 <skip> 14:16:25
>
> Unit #202 14:15:43 <skip> 14:16:25
>
> Nothing significant about the time; nobody near the Motion units nor
> WiFi router, so not like someone walked in the RF path. LIS, the
> glitch occurs randomly; just listed the times should the ~45 seconds
> of missing recording have a potential troubleshooting meaning. (I
> don?t know the times of previous glitches.)
>
> Both units:
>
> *
>
> Motion Version 4.5.1
>
> *
>
> Raspberry Pi 4B, with one USB camera each
>
> *
>
> Individual power supply on UPS
>
> *
>
> Uptime: (several days ago)
>
> The WiFi and NAS are also on their own UPSs, and no power issues.
>
> Thanks for the help!
>
> Barry
>
>
>
>
> _______________________________________________
> 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: Sat, 12 Apr 2025 11:03:32 -0500
From: Barry Martin <[email protected]>
To: [email protected]
Subject: Re: [Motion-user] Recording Skip
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hi JMB!
>
> Try using 'top' to monitor the system load.? Maybe 'disk' writes (to
> the NAS) are piling up.? Maybe some background process is consuming
> excessive CPU?? Did it start after a recent 'sudo aptitude safe-update'?
Will try your suggestions -- right now not sure how to correlate (right
word?) the time of the skip with top's activity reporting but will
experiment and learn!? Most Motion recordings are fine (no skip/glitch)
-- I did forget to mention that originally. Skip/glitch problem has been
occurred for some time, so can't blame a specific upgrade.
Will report back!
Barry
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