Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Last revisionBoth sides next revision
fuss:motion [2017/11/21 16:02] – created officefuss:motion [2018/04/10 17:42] office
Line 1: Line 1:
 +====== Schedule Motion Movement Detection ======
  
 +The following script should be run every minute (placed in ''/etc/cron.d/minutely'') in order to start or stop detection depending on the current time. The script can be configured by changing the parameters in the ''CONFIGURATION'' section.
 +
 +<code bash>
 +#!/bin/sh
 +###########################################################################
 +##  Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3      ##
 +##  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  ##
 +##  rights of fair usage, the disclaimer and warranty conditions.        ##
 +###########################################################################
 +## The script uses motion to start and stop motion detection such that   ##
 +## the camera will start recording only within the given time intervals. ##
 +##                                                                       ##
 +## To use the script, drop into /etc/cron.minutely such that the script  ##
 +## will be called every minute by crontab and pause or start detection.  ##
 +###########################################################################
 +
 +###########################################################################
 +##                            CONFIGURATION                              ##
 +###########################################################################
 +
 +# The detection URL to the motion webserver.
 +MOTION_URL_DETECTION=http://localhost:8085/0/detection
 +
 +# The start time after which recording should start (HHmm)
 +START_TIME=0705
 +
 +# The end time after which recording should stop (HHmm)
 +PAUSE_TIME=1700
 +
 +###########################################################################
 +##                              INTERNALS                                ##
 +###########################################################################
 +
 +# Get the current recording status.
 +DETECTION_STATUS=`curl -s $MOTION_URL_DETECTION"/status" 2>/dev/null | grep -Po '(?<=Detection status )(.+)'`
 +
 +# Get the current time.
 +CURRENT_TIME=`date +%H%M`
 +
 +# Whether the current time falls between the defined start and stop times.
 +test `[ $CURRENT_TIME -ge $START_TIME ] && [ $CURRENT_TIME -le $PAUSE_TIME ]`
 +case $? in
 +    0)
 +        case $DETECTION_STATUS in
 +            PAUSE)
 +                logger "Start recording..."
 +                # Instruct the camera to start detection and recording.
 +                curl -s $MOTION_URL_DETECTION"/start" >/dev/null
 +            ;;
 +        esac
 +        ;;
 +    *)
 +        case $DETECTION_STATUS in
 +            ACTIVE)
 +                logger "Stop recording..."
 +                # Instruct the camera to start detection and recording.
 +                curl -s $MOTION_URL_DETECTION"/pause" >/dev/null
 +            ;;
 +        esac
 +        ;;
 +esac
 +
 +</code>
 +
 +====== Reduce CPU Usage ======
 +
 +Motion can be very CPU intensive when capturing streams such that the following tips can be used as a guide to lowering the CPU usage considerably:
 +
 +  * Determine the exact width, height and framerate that the camera is capable of, select the lowest resolution that the camera offers and change ''width'', ''height'' and ''framerate'' in ''/etc/motion.conf'' to match the exact values. The benefit from setting exact values is that Motion will not spend time resizing or rescaling movies. The default values in ''/etc/motion.conf'' rarely apply to whatever camera Motion may be capturing from. . .
 +  * Edit ''/etc/motion.conf'' and change the ffmpeg video codec to ''mp4:h264_omx'':
 +<code>
 +ffmpeg_video_codec mp4:h264_omx
 +</code>
 +
 +in order to benefit from hardware accelerated video capturing. This option alone should lower the CPU consumption considerably and the hardware acceleration is now present on Raspberry Pi 2 and 3.

fuss/motion.txt · Last modified: 2022/04/19 08:28 by 127.0.0.1

Access website using Tor Access website using i2p Wizardry and Steamworks PGP Key


For the contact, copyright, license, warranty and privacy terms for the usage of this website please see the contact, license, privacy, copyright.