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Today's Topics:
1. Re: Can motion use GPU? (MrDave)
2. Re: Resize input video. (Thomas Drebert)
----------------------------------------------------------------------
Message: 1
Date: Sat, 26 Sep 2020 07:56:33 -0600
From: MrDave <[email protected]>
To: [email protected]
Subject: Re: [Motion-user] Can motion use GPU?
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
As an addendum to my earlier response.
The VAAPI decoding for netcams that I referenced was in a fork had now
been pushed into the master branch.
Dave
On 9/26/2020 1:15 AM, Amos Shapira wrote:
> Tha ks everyone for your responses.
>
> Since all replies pointed to just getting ffmpeg to use the GPU, a
> very quick google about this came up with the following solution:
>
> TL;DR: Install ffmpeg using "snap" instead of the usual "apt". It will
> include the required binary drivers to take advantage of the GPU.
>
> Source:
> https://askubuntu.com/questions/1175488/how-enable-gpu-accelerated-video-encoders-in-ffmpeg-ubuntu-19-04
>
> (it's about Ubuntu 19.04 but I think it's reasonable to expect it to
> be relevant for any newer Ubuntu).
>
> Snap page: https://snapcraft.io/ffmpeg
>
> On Sun, 13 Sep 2020 at 16:52, MrDave <[email protected]
> <mailto:[email protected]>> wrote:
>
> Its an easy question but the answer is a bit complicated....
>
> Generally, the answer to the question is "no" there isn't any
> direct support for hardware decoding.? However, for certain
> cameras and platforms, there is an option to specify a specific
> decoder and encoder that could be built into ffmpeg.? Its been
> observed however that this is primarily only a benefit for those
> with PI's and allows them to specify the ffmpeg hardware OMX
> encoders/decoders.? The other HW decoders for regular desktop
> platforms such as VAAPI, QSV, VDPAU, etc, all seem to require
> unique coding that the regular Motion program does not have built
> in.? (There is at least one fork that illustrates how to implement
> VAAPI but those revisions are not in the main Motion code/releases).
>
> Previous discussions on the mailing list indicated possible
> workarounds to get it implemented using a v4l2 loopback device.?
> This is virtually identical to the example in the Motion guide at
> https://motion-project.github.io/motion_config.html#basic_setup_static
> but instead of just a static file, specify the IP camera and HW
> decoding.
>
> For each of the above options, it will usually be required to
> build ffmpeg from source and specify all the HW options that are
> applicable to your computer.
>
> Finally, I'd comment that the "standard" option to reduce CPU for
> your situation is use the netcam_url, netcam_highres and
> movie_passthrough options.? I believe that generally this method
> is going to result in lower CPU usage than just using the higher
> resolution streams alone with HW decoding.
>
> MrDave
>
>
> On 9/12/2020 6:41 PM, rmbusy wrote:
>> Supposedly if you can get ffmpeg to use the GPU, then yes, as
>> motion uses ffmpeg. You need to research for your hardware, how
>> to build ffmpeg for that.
>>
>>
>> --
>> Rob.
>>
>>
>> On 9/12/20 5:15 PM, Harlan Daneker wrote:
>>> I'm not an expert, but are you using extpipe, if not I believe
>>> motion only uses 1 thread.
>>>
>>> On Sat, Sep 12, 2020 at 2:59 PM Amos Shapira
>>> <[email protected] <mailto:[email protected]>> wrote:
>>>
>>> Hi,
>>>
>>> I have Motion (with MotionEye) installed on Ubuntu?connected
>>> to 4 6MP IP cameras and it can't handle the load.
>>>
>>> I'm thinking of buying stronger hardware for it and was
>>> wondering whether it could take advantage of a GPU.
>>>
>>> Can it?
>>> What would be required to make it do that?
>>>
>>> Thanks
>>>
>>> --Amos
>>>
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>>
>>
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> --
> <http://au.linkedin.com/in/gliderflyer>
>
>
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Message: 2
Date: Sat, 26 Sep 2020 16:40:16 +0200
From: Thomas Drebert <[email protected]>
To: Motion discussion list <[email protected]>
Subject: Re: [Motion-user] Resize input video.
Message-ID:
<CANn+32hNwcAZfgLiMr+=k3mrtjdceh2qjtt7p8x8i-9uf20...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
thanks that work fine.
Am Sa., 26. Sept. 2020 um 16:03 Uhr schrieb MrDave <[email protected]>:
>
> Have you tried the v4l2 via the netcam_url option?
>
> https://motion-project.github.io/motion_config.html#netcam_url
>
> This will rescale the image to whatever is being specified in the
> configuration file.
>
> On 9/26/2020 5:35 AM, Thomas Drebert wrote:
>
> > Hallo,
> >
> > I use as source a thermal module, this produces a v4l2 video stream
> > with 80x60 px.
> > To use this with motion I resize the stream with ffmpeg on the fly.
> > I would like to leave this step out and resize the stream in Motion.
> > does anyone have any idea how this could work?
> >
> > regards
> > ThomasD
> >
> >
> > _______________________________________________
> > 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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