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Today's Topics:
1. Mask for alg_diff_standard in alg.c (Kian Johnston)
2. Re: Mask for alg_diff_standard in alg.c (Mike Wilson)
3. question on mask_file + netcam_url, netcam_highres and
movie_passthrough (Allan Peda)
4. Re: question on mask_file + netcam_url, netcam_highres and
movie_passthrough (tosiara)
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Message: 1
Date: Thu, 2 May 2019 16:11:49 +0000
From: Kian Johnston <[email protected]>
To: "[email protected]"
<[email protected]>
Subject: [Motion-user] Mask for alg_diff_standard in alg.c
Message-ID:
<db7pr10mb2057f0f5deeac83c1b3852d3d6...@db7pr10mb2057.eurprd10.prod.outlook.com>
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I have a basic understanding of how it detects motion but I still have
difficulty understanding how the mask works. If anyone knows how it works, it
would be greatly appreciated if it could be explained. In alg_diff_standard it
is used extensively and assistance is needed to understand it.
Thanks
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Message: 2
Date: Thu, 2 May 2019 13:17:46 -0400
From: Mike Wilson <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] Mask for alg_diff_standard in alg.c
Message-ID:
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Basically, anything that isn't desired has a mask value of 0, so when we
multiply the value of the current pixel by 0 the result is 0 difference. I
would suggest reading the non-mmx version first as it is easier to wrap
your head around.
if (mask)
curdiff = ((int)(curdiff * *mask++) / 255);
On Thu, May 2, 2019 at 12:12 PM Kian Johnston <[email protected]>
wrote:
>
>
>
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
> I have a basic understanding of how it detects motion but I still have
> difficulty understanding how the mask works. If anyone knows how it works,
> it would be greatly appreciated if it could be explained. In
> alg_diff_standard it is used extensively and assistance is needed to
> understand it.
>
> Thanks
>
>
> _______________________________________________
> 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: Thu, 2 May 2019 15:15:33 -0400
From: Allan Peda <[email protected]>
To: [email protected]
Subject: [Motion-user] question on mask_file + netcam_url,
netcam_highres and movie_passthrough
Message-ID:
<CAEPoj6yhLbkon0W=AL=kx4uv0z4zkx3h-xshnrlg4jn8diy...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Reading through the documentation, it seems (but I do not see it explicitly
stated) that if movie_passthrough is set to "on" and the configuration
includes both netcam_url as well as netcam_highres rtsp streams that the
mask file should match the height to width proportions and resolution of an
image exported from the lower resolution netcam_url feed yes?
I am using a 4 GB, quad core fanless PC that is using 300% CPU, or about
75% usage per core, with two IP cameras. Since I hope to attach 6 cameras
I am trying to minimize processing load. My guess is that I should use the
secondary VGA or CIF stream for detection while passing through the native
5 MP H.265+ stream to the capture files.
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Message: 4
Date: Fri, 3 May 2019 10:17:29 +0300
From: tosiara <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] question on mask_file + netcam_url,
netcam_highres and movie_passthrough
Message-ID:
<CACHTdwSED1e2sx9_HzZCtRZV6aLKXOZXe58jqkj=unpg1jr...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Yes, to minimize CPU usage with H264 RTSP cameras, you need to enable
passthrough/highres and specify secondary VGA stream. Also, if
possible, configure frame rate at the camera side so it matches
motion's config
On Thu, May 2, 2019 at 10:16 PM Allan Peda <[email protected]> wrote:
>
> Reading through the documentation, it seems (but I do not see it explicitly
> stated) that if movie_passthrough is set to "on" and the configuration
> includes both netcam_url as well as netcam_highres rtsp streams that the mask
> file should match the height to width proportions and resolution of an image
> exported from the lower resolution netcam_url feed yes?
>
> I am using a 4 GB, quad core fanless PC that is using 300% CPU, or about 75%
> usage per core, with two IP cameras. Since I hope to attach 6 cameras I am
> trying to minimize processing load. My guess is that I should use the
> secondary VGA or CIF stream for detection while passing through the native 5
> MP H.265+ stream to the capture files.
>
> _______________________________________________
> 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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