Re: [Motion-user] RTSP stream and CPU utilization

[Tom K. <to...@te...>]

I have various no name cameras all using rasp in motion.  I have found that I need to have an exact match in the motion conf file and how the camera is set up.  Any mismatches result in high cpu utilization.

For me I make sure the frame rate and the resolution in the camera and the motion config file are exactly the same.  Each camera has a web page to configure its frame rate and resolution.  Each camera has a unique conf file in motion.

Sent from my iPad

> On Nov 23, 2018, at 3:10 PM, pri...@gm... wrote:
> 
> A person on Amazon listed these URL's as usable for the camera:
> 
> rtsp : / / admin:instar@IP-Address:RTSP-Port/11 - VLC Stream
> 
> http : / / admin:instar@IP-Address:Port/iphone/11 - Quicktime Stream
> 
> http :/ / IP-Address:Port/tmpfs/snap.jpg?usr=admin&pwd=instar - Snapshot (720p / 1280x720 Pixel)
> 
> http : / / IP-Address:Port/tmpfs/auto.jpg?usr=admin&pwd=instar - Snapshot (352p or 176p)
> 
> http : / / IP-Address:Port/cgi-bin/hi3510/mjpegstream.cgi?-chn=11&-usr=admin&-pwd=instar - MJPEG Stream
> 
> 
>> On Fri, Nov 23, 2018 at 11:48 AM David Powell <da...@de...> wrote:
>> Thanks for the insight.  And thanks to Harlan for the tip on mediainfo - that's going to come in handy.
>> 
>> I looked at the settings on the camera and the frame rate was set to 30 fps.  Also, the media profile was set to highprofile.  I changed the frame rate to 15 and the profile to "baseline".  None of that lowered the CPU utilization.
>> 
>> That camera actually has two streams, a primary and a secondary. The secondary has a 640x352 resolution.  I set it to 15 fps and switched to that stream, and it did make a big difference; brought it down to about 125%. The picture is not as good of course, but I think I can live with that.
>> 
>> Still, 125% is 2.5x the other three cameras combined, plus overhead.  It seems to me that I should still be able to do something to bring it down under 100%.  I can't believe that an RTSP stream takes that much more computational power. I want to add 4 more       similar cameras once I figure this out.  This is the one that I'm playing with:
>> 
>> https://www.amazon.com/Security-Surveillance-Detection-Waterproof-4sdot/dp/B073TSN6YD/ref=sr_1_4
>> 
>> If you know of any similarly-priced cameras that support MJPEG I'd like a pointer to them!
>> 
>> David
>> 
>> 
>> 
>> 
>> 
>>> On 11/23/18 11:26 AM, Colin Law wrote:
>>>> On Fri, 23 Nov 2018 at 17:13, David Powell <da...@de...> wrote:
>>>> The resolution of the MJPEG ones are all 640x480.  The RTSP one is 720p.
>>>> 
>>>> I have framerate set to 15 in motion.conf.  The individual camera config files do not have that setting.
>>> The MJPEG cameras are 307200 pixels, the RTSP is 921600 which is
>>> equivalent to all the others put together.  Also the RTSP is probably
>>> providing the data at 25 or 30 frames/sec and the processor has to
>>> decode all of those even though you only want 15/sec in motion Mjpeg
>>> is a sequence of individual pictures so unwanted ones can just be
>>> thrown away.  So yes, there is a lot more processing to be done for
>>> the RTSP camera before it even gets as far as motion.  You may be able
>>> to slow down the frame rate in the camera, and also possibly the
>>> resolution if you don't need it all.
>>> 
>>>> David
>>>> 
>>>> On 11/23/18 10:54 AM, Colin Law wrote:
>>>> 
>>>> On Fri, 23 Nov 2018 at 16:53, Colin Law <cl...@gm...> wrote:
>>>> 
>>>> On Fri, 23 Nov 2018 at 16:43, David Powell <da...@de...> wrote:
>>>> 
>>>> I have 3 IP cameras configured in Motion running on a Raspberry Pi (Ubuntu).  These cameras all use MJPEG streams and the CPU utilization on the Pi hovers around 50%.
>>>> 
>>>> I added another camera which doesn't support MJPEG, but does support RTSP.  Adding this one RTSP camera ran the CPU utilization up to around 200% (I believe this Pi has a quad-core CPU).  Is this typical for RTSP?  Is there any way to reduce the load for this protocol?  I want to add several more cameras but cheap wireless outdoor IP cameras that support MJPEG seem to be hard to come by nowadays.
>>>> 
>>>> What is the resolution of the mjpeg cameras and what is the rtsp one?
>>>> 
>>>> Also what is frame rate of both?
>>>> 
>>>> Colin
>>>> 
>>>> David
>>>> 
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