Re: [Motion-user] .mp4 files as input - how to detect motion

[MrDave <mot...@gm...>]

This is possible via streaming the file via ffmpeg to a v4l2 loopback 
device and then running motion on that device.  The flow would be

static file -> ffmpeg->v4l2 loopback device ->motion

See the static file section in the basic setup of the motion guide

http://htmlpreview.github.io/?https://github.com/Motion-Project/motion/blob/master/motion_guide.html#Basic_Setup

as well as the v4l2loopback setup section

http://htmlpreview.github.io/?https://github.com/Motion-Project/motion/blob/master/motion_guide.html#Options_Pipe




On 10/10/2017 2:39 PM, Hz3az54 via Motion-user wrote:
> hello,
>
> I would like to do something with my huge ( 3+ TB) video footage from 
> CCTV cameras.
> I would like to extract motion data only (images+video). There is no 
> hardware camera, and there isn't any stream.
>
> I have only .mp4 files which I would like to analyse.
> Is that possible? I have tried to custmomize the .conf file:
>
> ###########################################################
> # Capture device options
> ############################################################
>
> # Videodevice to be used for capturing  (default /dev/video0)
> # for FreeBSD default is /dev/bktr0
> videodevice 
> /media//085a6e19-7de4-438e-8988-8c06d34a7863/k4m/20171003/17_c28.mp4
>
> As a path to the specific file - comes from the cctv camera in past.
>
> But after 2 minutes after start I have got similar messages in log:
>
> [1:ml1] [WRN] [ALL] [Oct 10 22:20:10] motion_loop: Retrying until 
> successful connection with camera
> [1:ml1] [NTC] [VID] [Oct 10 22:20:10] vid_v4lx_start: Using 
> videodevice 
> /media/085a6e19-7de4-438e-8988-8c06d34a7863/k4m/20171003/17_c28.mp4 
> and input -1
> [1:ml1] [ERR] [VID] [Oct 10 22:20:10] v4l2_get_capability: Not a V4L2 
> device?
> [1:ml1] [NTC] [VID] [Oct 10 22:20:10] vid_v4lx_start: Using V4L1
> [1:ml1] [ERR] [ALL] [Oct 10 22:20:10] motion_loop: Video device fatal 
> error - Closing video device
> [1:ml1] [NTC] [VID] [Oct 10 22:20:10] vid_close: Closing video device 
> /media/085a6e19-7de4-438e-8988-8c06d34a7863/k4m/20171003/17_c28.mp4
> [1:ml1] [DBG] [ALL] [Oct 10 22:20:10] motion_loop: vid_return_code 1
> [1:ml1] [DBG] [ALL] [Oct 10 22:20:10] motion_loop: vid_return_code 1
> [1:ml1] [DBG] [ALL] [Oct 10 22:20:10] motion_loop: vid_return_code 1
>
> I know the ffmpeg should help me, but I have problems with finding 
> good documentation about that. Motion looks very interesting and has 
> all features which I would like to use, so... I would really like to 
> try to use it.
>
> If the file input is not best solution, I can try to convert this file 
> into any videostream - from ffpmeg.
>
>
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>
>
>
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