如何用普通usb搭建一个网络摄像头在任何linux主机

# Rename this distribution example file to motion.conf
#
# This config file was generated by motion 3.2.12+git20140228


############################################################
# Daemon
############################################################

# Start in daemon (background) mode and release terminal (default: off)
#选择on，当你运行一个摄像头的时候，会释放终端，也相当于后台运行。
daemon off

# File to store the process ID, also called pid file. (default: not defined)
#不是很懂，和进程有关。
process_id_file /var/run/motion/motion.pid

############################################################
# Basic Setup Mode
############################################################

# Start in Setup-Mode, daemon disabled. (default: off)
# 是否以setup_mode模式启动motion。一般不用。
setup_mode off


# Use a file to save logs messages, if not defined stderr and syslog is used. (default: not defined)
# 保存logmessage的。可以配置，可以记录motion的运行状况。
;logfile /tmp/motion.log

# Level of log messages [1..9] (EMR, ALR, CRT, ERR, WRN, NTC, INF, DBG, ALL). (default: 6 / NTC)
# 打印台信息的种类……
log_level 6

# Filter to log messages by type (COR, STR, ENC, NET, DBL, EVT, TRK, VID, ALL). (default: ALL)
# 打印台信息的种类……
log_type all

###########################################################
# Capture device options
# 设备选项
############################################################

# Videodevice to be used for capturing  (default /dev/video0)
# for FreeBSD default is /dev/bktr0
# 这个是使用的摄像头。挂载多个摄像头的时候，会依次有video1，video2这样。挂载的摄像头官方给的数目好像还挺多的，
# 但是想都别想，树莓派内存没那么大。
videodevice /dev/video0

# v4l2_palette allows to choose preferable palette to be use by motion
# to capture from those supported by your videodevice. (default: 17)
# E.g. if your videodevice supports both V4L2_PIX_FMT_SBGGR8 and
# V4L2_PIX_FMT_MJPEG then motion will by default use V4L2_PIX_FMT_MJPEG.
# Setting v4l2_palette to 2 forces motion to use V4L2_PIX_FMT_SBGGR8
# instead.

# 下面这一大串是获取的格式。这个在mjpg的input.uvc文件中也能看到。一般是MJPEG'吧。因为有些信号不适用派，是电视盒子之类的。
#
# Values :
# V4L2_PIX_FMT_SN9C10X : 0  'S910'
# V4L2_PIX_FMT_SBGGR16 : 1  'BYR2'
# V4L2_PIX_FMT_SBGGR8  : 2  'BA81'
# V4L2_PIX_FMT_SPCA561 : 3  'S561'
# V4L2_PIX_FMT_SGBRG8  : 4  'GBRG'
# V4L2_PIX_FMT_SGRBG8  : 5  'GRBG'
# V4L2_PIX_FMT_PAC207  : 6  'P207'
# V4L2_PIX_FMT_PJPG    : 7  'PJPG'
# V4L2_PIX_FMT_MJPEG   : 8  'MJPEG'
# V4L2_PIX_FMT_JPEG    : 9  'JPEG'
# V4L2_PIX_FMT_RGB24   : 10 'RGB3'
# V4L2_PIX_FMT_SPCA501 : 11 'S501'
# V4L2_PIX_FMT_SPCA505 : 12 'S505'
# V4L2_PIX_FMT_SPCA508 : 13 'S508'
# V4L2_PIX_FMT_UYVY    : 14 'UYVY'
# V4L2_PIX_FMT_YUYV    : 15 'YUYV'
# V4L2_PIX_FMT_YUV422P : 16 '422P'
# V4L2_PIX_FMT_YUV420  : 17 'YU12'
#
v4l2_palette 17

# Tuner device to be used for capturing using tuner as source (default /dev/tuner0)
# This is ONLY used for FreeBSD. Leave it commented out for Linux
# 看到ONLY used for我就懒得去查FreeBSD了。
; tunerdevice /dev/tuner0

# The video input to be used (default: -1)
# Should normally be set to 0 or 1 for video/TV cards, and -1 for USB cameras
# USB cameras，use设备选-1
input -1

# The video norm to use (only for video capture and TV tuner cards)
# Values: 0 (PAL), 1 (NTSC), 2 (SECAM), 3 (PAL NC no colour). Default: 0 (PAL)
# 和信号有关，上面那三个单词我一个也不认识，不改就对了。
norm 0

# The frequency to set the tuner to (kHz) (only for TV tuner cards) (default: 0)
frequency 0

# Rotate image this number of degrees. The rotation affects all saved images as
# well as movies. Valid values: 0 (default = no rotation), 90, 180 and 270.
rotate 0

# Image width (pixels). Valid range: Camera dependent, default: 352
# 和下面那个，是图像的尺寸。这个还是比较有用的。
width 800

# Image height (pixels). Valid range: Camera dependent, default: 288
height 600

# Maximum number of frames to be captured per second.
# Valid range: 2-100. Default: 100 (almost no limit).
# 不知怎么回事，这个也就相当于fps，是帧速率，但是蜗牛怎么改，好像并没有什么改变，还是一秒2帧的样子。
framerate 20

# Minimum time in seconds between capturing picture frames from the camera.
# 拍摄两张图像的最小间隔，秒为单位。
# Default: 0 = disabled - the capture rate is given by the camera framerate.
# 默认是0，取决于摄像头的帧速率。
# This option is used when you want to capture images at a rate lower than 2 per second.
minimum_frame_time 0

# URL to use if you are using a network camera, size will be autodetected (incl http:// ftp:// mjpg:// rstp:// or file:///)
# Must be a URL that returns single jpeg pictures or a raw mjpeg stream. Default: Not defined
# 这个我就不太明白了，他本来就是个摄像头，还弄个别的摄像头的地址干什么？
; netcam_url value

# Username and password for network camera (only if required). Default: not defined
# Syntax is user:password
# 注意这个和上面有关，是登陆别的摄像头的用户和密码。这个不是你的摄像头的用户名和密码。你的在下面配置。
; netcam_userpass haha:123

# The setting for keep-alive of network socket, should improve performance on compatible net cameras.
# off:   The historical implementation using HTTP/1.0, closing the socket after each http request.
# force: Use HTTP/1.0 requests with keep alive header to reuse the same connection.
# on:    Use HTTP/1.1 requests that support keep alive as default.
# Default: off
# 是否保活。这个我改成on了。
netcam_keepalive on

# URL to use for a netcam proxy server, if required, e.g. "http://myproxy".
# If a port number other than 80 is needed, use "http://myproxy:1234".
# Default: not defined
; netcam_proxy value

# Set less strict jpeg checks for network cameras with a poor/buggy firmware.
# Default: off
netcam_tolerant_check on

# Let motion regulate the brightness of a video device (default: off).
# The auto_brightness feature uses the brightness option as its target value.
# If brightness is zero auto_brightness will adjust to average brightness value 128.
# Only recommended for cameras without auto brightness
# 这个比较重要，是否自动调节亮度。这个很实用！会自动调整图像的亮度，你会在控制台看到他打印的亮度的信息。
auto_brightness on

# Set the initial brightness of a video device.
# If auto_brightness is enabled, this value defines the average brightness level
# which Motion will try and adjust to.
# Valid range 0-255, default 0 = disabled
# 上面自动亮度了的话那这个也就没用了。
brightness 100

# Set the contrast of a video device.
# Valid range 0-255, default 0 = disabled
# 设置对比度。
contrast 0

# Set the saturation of a video device.
# Valid range 0-255, default 0 = disabled
# 饱和度
saturation 0

# Set the hue of a video device (NTSC feature).
# Valid range 0-255, default 0 = disabled
# 色调
hue 0


############################################################
# Round Robin (multiple inputs on same video device name)
# Round Robin，中文名是轮询调度
# 混合输入在同一个设备名称，就是一个摄像头获取多个源。这个很好，mjpg好像是独占式的，一个进程只能使用一个摄像头。
############################################################

# Number of frames to capture in each roundrobin step (default: 1)
# 你想，一个摄像头分出几个源，那肯定是轮着的啊，要是两个地方用的话（按下面1算），那就是你一帧，我一帧。
roundrobin_frames 1

# Number of frames to skip before each roundrobin step (default: 1)
roundrobin_skip 1

# Try to filter out noise generated by roundrobin (default: off)
# 大概是会产生噪声，这个是分辨噪声的。不管。
# 是想想这个功能没什么用。摄像头不会动，你分成俩份也没什么意思啊对不对……
switchfilter off


############################################################
# Motion Detection Settings:
# 敲黑板，划重点了！运动检测配置！
############################################################

# Threshold for number of changed pixels in an image that
# triggers motion detection (default: 1500)
# 官网文档说：Threshold for declaring motion.检测运动的阈值，就是怎么才算运动了。
# 如果值变得很大的话，那画面中的小改变不算是运动。
threshold 1500

# Automatically tune the threshold down if possible (default: off)
# 自动把阈值调整。
threshold_tune on

# Noise threshold for the motion detection (default: 32)
# 动作检测中噪声阈值。
noise_level 32

# Automatically tune the noise threshold (default: on)
# 是否自动调整噪声阈值。多方便的东西啊，都是自动的。
noise_tune on

# Despeckle motion image using (e)rode or (d)ilate or (l)abel (Default: not defined)
# Recommended value is EedDl. Any combination (and number of) of E, e, d, and D is valid.
# (l)abeling must only be used once and the 'l' must be the last letter.
# Comment out to disable
despeckle_filter EedDl

# Detect motion in predefined areas (1 - 9). Areas are numbered like that:  1 2 3
# A script (on_area_detected) is started immediately when motion is         4 5 6
# detected in one of the given areas, but only once during an event.        7 8 9
# One or more areas can be specified with this option. Take care: This option
# does NOT restrict detection to these areas! (Default: not defined)
# 这个功能也挺高级，“预测”在画面的哪个区域会有运动出现。分成了九个部分。只要有一个选中的预测区域出现运动，就……
; area_detect value

# PGM file to use as a sensitivity mask.
# Full path name to. (Default: not defined)
; mask_file value

# Dynamically create a mask file during operation (default: 0)
# 动态创建有个掩码文件？
# Adjust speed of mask changes from 0 (off) to 10 (fast)
smart_mask_speed 0

# Ignore sudden massive light intensity changes given as a percentage of the picture
# area that changed intensity. Valid range: 0 - 100 , default: 0 = disabled
lightswitch 0

# Picture frames must contain motion at least the specified number of frames
# in a row before they are detected as true motion. At the default of 1, all
# motion is detected. Valid range: 1 to thousands, recommended 1-5
# 这一张照片至少包含多少个多少个动作？
minimum_motion_frames 1

# Specifies the number of pre-captured (buffered) pictures from before motion
# was detected that will be output at motion detection.
# Recommended range: 0 to 5 (default: 0)
# Do not use large values! Large values will cause Motion to skip video frames and
# cause unsmooth movies. To smooth movies use larger values of post_capture instead.
pre_capture 0

# Number of frames to capture after motion is no longer detected (default: 0)
post_capture 0

# Event Gap is the seconds of no motion detection that triggers the end of an event.
# An event is defined as a series of motion images taken within a short timeframe.
# Recommended value is 60 seconds (Default). The value -1 is allowed and disables
# events causing all Motion to be written to one single movie file and no pre_capture.
# If set to 0, motion is running in gapless mode. Movies don't have gaps anymore. An
# event ends right after no more motion is detected and post_capture is over.
event_gap 60

# Maximum length in seconds of a movie
# When value is exceeded a new movie file is created. (Default: 0 = infinite)
# 拍摄的视频的最长的时间。
max_movie_time 0

# Always save images even if there was no motion (default: off)
# 没有动作也拍照。这个就没必要了，反正你能用命令拍照。
emulate_motion off


############################################################
# Image File Output
############################################################

# Output 'normal' pictures when motion is detected (default: on)
# 一动作检测到时就输出照片
# Valid values: on, off, first, best, center
# When set to 'first', only the first picture of an event is saved.
# 动作检测到的第一次就拍摄。
# Picture with most motion of an event is saved when set to 'best'.
# 一个事件最多的动作产生时输出照片
# Picture with motion nearest center of picture is saved when set to 'center'.
# 画面最中心产生动作时输出照片。
# Can be used as preview shot for the corresponding movie.
output_pictures best

# Output pictures with only the pixels moving object (ghost images) (default: off)
# 产生像素点移动
output_debug_pictures off

# The quality (in percent) to be used by the jpeg compression (default: 75)
# 质量。不用管，反正摄像头的质量也不怎么高。
quality 75

# Type of output images
# Valid values: jpeg, ppm (default: jpeg)
# 输出的照片的格式。
picture_type jpeg

############################################################
# FFMPEG related options
# Film (movies) file output, and deinterlacing of the video input
# The options movie_filename and timelapse_filename are also used
# by the ffmpeg feature
############################################################

# Use ffmpeg to encode movies in realtime (default: off)
# 实时利用ffmpeg编码视频。ffmpeg是和视频处理有关的，也是motion的依赖包，应该会一并下载。
ffmpeg_output_movies on

# Use ffmpeg to make movies with only the pixels moving
# object (ghost images) (default: off)
# 检测到像素点移动时录像。
ffmpeg_output_debug_movies off

# Use ffmpeg to encode a timelapse movie
# Default value 0 = off - else save frame every Nth second
ffmpeg_timelapse 0

# The file rollover mode of the timelapse video
# Valid values: hourly, daily (default), weekly-sunday, weekly-monday, monthly, manual
ffmpeg_timelapse_mode daily

# Bitrate to be used by the ffmpeg encoder (default: 400000)
# This option is ignored if ffmpeg_variable_bitrate is not 0 (disabled)
# 这些都是视频的参数。
ffmpeg_bps 500000

# Enables and defines variable bitrate for the ffmpeg encoder.
# ffmpeg_bps is ignored if variable bitrate is enabled.
# Valid values: 0 (default) = fixed bitrate defined by ffmpeg_bps,
# or the range 2 - 31 where 2 means best quality and 31 is worst.
ffmpeg_variable_bitrate 0

# Codec to used by ffmpeg for the video compression.
# Timelapse mpegs are always made in mpeg1 format independent from this option.
# Supported formats are: mpeg1 (ffmpeg-0.4.8 only), mpeg4 (default), and msmpeg4.
# mpeg1 - gives you files with extension .mpg
# mpeg4 or msmpeg4 - gives you files with extension .avi
# msmpeg4 is recommended for use with Windows Media Player because
# it requires no installation of codec on the Windows client.
# swf - gives you a flash film with extension .swf
# flv - gives you a flash video with extension .flv
# ffv1 - FF video codec 1 for Lossless Encoding ( experimental )
# mov - QuickTime ( testing )
# ogg - Ogg/Theora ( testing )
# 视频的格式。慎重，因为和你的摄像头支持不支持也有关系。mpeg4产生的是avi。
ffmpeg_video_codec mpeg4

# Use ffmpeg to deinterlace video. Necessary if you use an analog camera
# and see horizontal combing on moving objects in video or pictures.
# (default: off)
ffmpeg_deinterlace off

############################################################
# SDL Window
############################################################

# Number of motion thread to show in SDL Window (default: 0 = disabled)
sdl_threadnr 0

############################################################
# External pipe to video encoder
# Replacement for FFMPEG builtin encoder for ffmpeg_output_movies only.
# The options movie_filename and timelapse_filename are also used
# by the ffmpeg feature
#############################################################

# Bool to enable or disable extpipe (default: off)
use_extpipe off

# External program (full path and opts) to pipe raw video to
# Generally, use '-' for STDIN...
;extpipe mencoder -demuxer rawvideo -rawvideo w=320:h=240:i420 -ovc x264 -x264encopts bframes=4:frameref=1:subq=1:scenecut=-1:nob_adapt:threads=1:keyint=1000:8x8dct:vbv_bufsize=4000:crf=24:partitions=i8x8,i4x4:vbv_maxrate=800:no-chroma-me -vf denoise3d=16:12:48:4,pp=lb -of   avi -o %f.avi - -fps %fps



############################################################
# Snapshots (Traditional Periodic Webcam File Output)
# 截屏配置。
############################################################

# Make automated snapshot every N seconds (default: 0 = disabled)
# 每多少秒截屏一次
snapshot_interval 0


############################################################
# Text Display
# %Y = year, %m = month, %d = date,
# %H = hour, %M = minute, %S = second, %T = HH:MM:SS,
# %v = event, %q = frame number, %t = thread (camera) number,
# %D = changed pixels, %N = noise level, \n = new line,
# %i and %J = width and height of motion area,
# %K and %L = X and Y coordinates of motion center
# %C = value defined by text_event - do not use with text_event!
# You can put quotation marks around the text to allow
# leading spaces
# 画面上会有文字显示，上面是显示的格式
############################################################

# Locate and draw a box around the moving object.
# 定位移动的物体并加一个框。
# Valid values: on, off, preview (default: off)
# on是画框，off不画，preview是在截屏中画框。
# Set to 'preview' will only draw a box in preview_shot pictures.
locate_motion_mode off

# Set the look and style of the locate box if enabled.
# Valid values: box, redbox, cross, redcross (default: box)
# Set to 'box' will draw the traditional box.
# Set to 'redbox' will draw a red box.
# Set to 'cross' will draw a little cross to mark center.
# Set to 'redcross' will draw a little red cross to mark center.
# 画的是个什么东西。框，红框，还是叉，红叉。
locate_motion_style box

# Draws the timestamp using same options as C function strftime(3)
# Default: %Y-%m-%d\n%T = date in ISO format and time in 24 hour clock
# Text is placed in lower right corner
# 在画面显示时间戳吧。
text_right %Y-%m-%d\n%T-%q

# Draw a user defined text on the images using same options as C function strftime(3)
# Default: Not defined = no text
# Text is placed in lower left corner
# 绘制用户指定的文本在画面上，位置在左下角
; text_left CAMERA %t

# Draw the number of changed pixed on the images (default: off)
# Will normally be set to off except when you setup and adjust the motion settings
# Text is placed in upper right corner
# 绘制产生像素点变化的个数，在右上角
text_changes on

# This option defines the value of the special event conversion specifier %C
# You can use any conversion specifier in this option except %C. Date and time
# values are from the timestamp of the first image in the current event.
# Default: %Y%m%d%H%M%S
# The idea is that %C can be used filenames and text_left/right for creating
# a unique identifier for each event.
text_event %Y%m%d%H%M%S

# Draw characters at twice normal size on images. (default: off)
text_double off


# Text to include in a JPEG EXIF comment
# May be any text, including conversion specifiers.
# The EXIF timestamp is included independent of this text.
;exif_text %i%J/%K%L

############################################################
# Target Directories and filenames For Images And Films
# For the options snapshot_, picture_, movie_ and timelapse_filename
# you can use conversion specifiers
# %Y = year, %m = month, %d = date,
# %H = hour, %M = minute, %S = second,
# %v = event, %q = frame number, %t = thread (camera) number,
# %D = changed pixels, %N = noise level,
# %i and %J = width and height of motion area,
# %K and %L = X and Y coordinates of motion center
# %C = value defined by text_event
# Quotation marks round string are allowed.
# 截了图，录了像，放在那里。目标文件夹
############################################################

# Target base directory for pictures and films
# Recommended to use absolute path. (Default: current working directory)
# 目标文件夹
target_dir /var/lib/motion

# File path for snapshots (jpeg or ppm) relative to target_dir
# Default: %v-%Y%m%d%H%M%S-snapshot
# Default value is equivalent to legacy oldlayout option
# For Motion 3.0 compatible mode choose: %Y/%m/%d/%H/%M/%S-snapshot
# File extension .jpg or .ppm is automatically added so do not include this.
# Note: A symbolic link called lastsnap.jpg created in the target_dir will always
# point to the latest snapshot, unless snapshot_filename is exactly 'lastsnap'
# 截图的存储格式是当前的时间和后边的snapshot选项。
snapshot_filename %v-%Y%m%d%H%M%S-snapshot

# File path for motion triggered images (jpeg or ppm) relative to target_dir
# Default: %v-%Y%m%d%H%M%S-%q
# Default value is equivalent to legacy oldlayout option
# For Motion 3.0 compatible mode choose: %Y/%m/%d/%H/%M/%S-%q
# File extension .jpg or .ppm is automatically added so do not include this
# Set to 'preview' together with best-preview feature enables special naming
# convention for preview shots. See motion guide for details
picture_filename %v-%Y%m%d%H%M%S-%q

# File path for motion triggered ffmpeg films (movies) relative to target_dir
# Default: %v-%Y%m%d%H%M%S
# Default value is equivalent to legacy oldlayout option
# For Motion 3.0 compatible mode choose: %Y/%m/%d/%H%M%S
# File extension .mpg or .avi is automatically added so do not include this
# This option was previously called ffmpeg_filename
# 文件的名字，后缀是自己加的，.avi是自己的。
movie_filename %v-%Y%m%d%H%M%S

# File path for timelapse movies relative to target_dir
# Default: %Y%m%d-timelapse
# Default value is near equivalent to legacy oldlayout option
# For Motion 3.0 compatible mode choose: %Y/%m/%d-timelapse
# File extension .mpg is automatically added so do not include this
timelapse_filename %Y%m%d-timelapse

############################################################
# Global Network Options
# 全局网络选项
############################################################
# Enable or disable IPV6 for http control and stream (default: off )
ipv6_enabled on

############################################################
# Live Stream Server
############################################################

# The mini-http server listens to this port for requests (default: 0 = disabled)
# 在这个端口看视频
stream_port 12345

# Quality of the jpeg (in percent) images produced (default: 50)
# 质量
stream_quality 50

# Output frames at 1 fps when no motion is detected and increase to the
# rate given by stream_maxrate when motion is detected (default: off)
stream_motion off

# Maximum framerate for stream streams (default: 1)
# 最小的帧速率
stream_maxrate 1

# Restrict stream connections to localhost only (default: on)
# 限制看到流只能跟localhost看到流。
###########################################################################
# 这个就是那个树莓派能看到但是一个局域网看不到的原因。改成on就行了。
##########################################################################
stream_localhost off

# Limits the number of images per connection (default: 0 = unlimited)
# Number can be defined by multiplying actual stream rate by desired number of seconds
# Actual stream rate is the smallest of the numbers framerate and stream_maxrate
stream_limit 0

# Set the authentication method (default: 0)
# 0 = disabled
# 1 = Basic authentication
# 2 = MD5 digest (the safer authentication)
# 这个设置密码，设置密码的时候选择1，基本授权模式吧。
stream_auth_method 0

# Authentication for the stream. Syntax username:password
# Default: not defined (Disabled)
# 设置密码，格式是      用户名：密码
; stream_authentication haha:123


############################################################
# HTTP Based Control
# http控制
############################################################

# TCP/IP port for the http server to listen on (default: 0 = disabled)
# 在这个端口可以进行控制
webcontrol_port 8080

# Restrict control connections to localhost only (default: on)
# 仅仅localhost可以进行控制限制。on的话是只有本机可以控制，为了保密可以选这个。
webcontrol_localhost off

# Output for http server, select off to choose raw text plain (default: on)
# 选择这个的时候是只能看到文字，不能进行控制。
webcontrol_html_output off

# Authentication for the http based control. Syntax username:password
# Default: not defined (Disabled)
# 控制密码    ，用户名：密码
; webcontrol_authentication haha:123


############################################################
# Tracking (Pan/Tilt)
# 跟踪，这个里面的参数我都不太能看懂。我猜想是跟检测画面中的动作有关的。
#############################################################

# Type of tracker (0=none (default), 1=stepper, 2=iomojo, 3=pwc, 4=generic, 5=uvcvideo, 6=servo)
# The generic type enables the definition of motion center and motion size to
# be used with the conversion specifiers for options like on_motion_detected
track_type 0

# Enable auto tracking (default: off)
track_auto off

# Serial port of motor (default: none)
;track_port /dev/ttyS0

# Motor number for x-axis (default: 0)
;track_motorx 0

# Set motorx reverse (default: 0)
;track_motorx_reverse 0

# Motor number for y-axis (default: 0)
;track_motory 1

# Set motory reverse (default: 0)
;track_motory_reverse 0

# Maximum value on x-axis (default: 0)
;track_maxx 200

# Minimum value on x-axis (default: 0)
;track_minx 50

# Maximum value on y-axis (default: 0)
;track_maxy 200

# Minimum value on y-axis (default: 0)
;track_miny 50

# Center value on x-axis (default: 0)
;track_homex 128

# Center value on y-axis (default: 0)
;track_homey 128

# ID of an iomojo camera if used (default: 0)
track_iomojo_id 0

# Angle in degrees the camera moves per step on the X-axis
# with auto-track (default: 10)
# Currently only used with pwc type cameras
track_step_angle_x 10

# Angle in degrees the camera moves per step on the Y-axis
# with auto-track (default: 10)
# Currently only used with pwc type cameras
track_step_angle_y 10

# Delay to wait for after tracking movement as number
# of picture frames (default: 10)
track_move_wait 10

# Speed to set the motor to (stepper motor option) (default: 255)
track_speed 255

# Number of steps to make (stepper motor option) (default: 40)
track_stepsize 40


############################################################
# External Commands, Warnings and Logging:
# You can use conversion specifiers for the on_xxxx commands
# %Y = year, %m = month, %d = date,
# %H = hour, %M = minute, %S = second,
# %v = event, %q = frame number, %t = thread (camera) number,
# %D = changed pixels, %N = noise level,
# %i and %J = width and height of motion area,
# %K and %L = X and Y coordinates of motion center
# %C = value defined by text_event
# %f = filename with full path
# %n = number indicating filetype
# Both %f and %n are only defined for on_picture_save,
# on_movie_start and on_movie_end
# Quotation marks round string are allowed.
############################################################

# Do not sound beeps when detecting motion (default: on)
# Note: Motion never beeps when running in daemon mode.
quiet on

# Command to be executed when an event starts. (default: none)
# An event starts at first motion detected after a period of no motion defined by event_gap
; on_event_start value

# Command to be executed when an event ends after a period of no motion
# (default: none). The period of no motion is defined by option event_gap.
; on_event_end value

# Command to be executed when a picture (.ppm|.jpg) is saved (default: none)
# To give the filename as an argument to a command append it with %f
; on_picture_save value

# Command to be executed when a motion frame is detected (default: none)
; on_motion_detected value

# Command to be executed when motion in a predefined area is detected
# Check option 'area_detect'.   (default: none)
; on_area_detected value

# Command to be executed when a movie file (.mpg|.avi) is created. (default: none)
# To give the filename as an argument to a command append it with %f
; on_movie_start value

# Command to be executed when a movie file (.mpg|.avi) is closed. (default: none)
# To give the filename as an argument to a command append it with %f
; on_movie_end value

# Command to be executed when a camera can't be opened or if it is lost
# NOTE: There is situations when motion don't detect a lost camera!
# It depends on the driver, some drivers dosn't detect a lost camera at all
# Some hangs the motion thread. Some even hangs the PC! (default: none)
; on_camera_lost value

#####################################################################
# Common Options for database features.
# Options require database options to be active also.
# motion的好处是可以连接数据库的，并且提供了sql的接口。
#####################################################################

# Log to the database when creating motion triggered picture file  (default: on)
; sql_log_picture on

# Log to the database when creating a snapshot image file (default: on)
; sql_log_snapshot on

# Log to the database when creating motion triggered movie file (default: off)
; sql_log_movie off

# Log to the database when creating timelapse movies file (default: off)
; sql_log_timelapse off

# SQL query string that is sent to the database
# Use same conversion specifiers has for text features
# Additional special conversion specifiers are
# %n = the number representing the file_type
# %f = filename with full path
# Default value:
# Create tables :
## 
# Mysql
# CREATE TABLE security (camera int, filename char(80) not null, frame int, file_type int, time_stamp timestamp(14), event_time_stamp timestamp(14));
#
# Postgresql
# CREATE TABLE security (camera int, filename char(80) not null, frame int, file_type int, time_stamp timestamp without time zone, event_time_stamp timestamp without time zone);
#
# insert into security(camera, filename, frame, file_type, time_stamp, text_event) values('%t', '%f', '%q', '%n', '%Y-%m-%d %T', '%C')
; sql_query insert into security(camera, filename, frame, file_type, time_stamp, event_time_stamp) values('%t', '%f', '%q', '%n', '%Y-%m-%d %T', '%C')


############################################################
# Database Options
############################################################

# database type : mysql, postgresql, sqlite3 (default : not defined)
; database_type value

# database to log to (default: not defined)
; database_dbname value

# The host on which the database is located (default: localhost)
; database_host value

# User account name for database (default: not defined)
; database_user value

# User password for database (default: not defined)
; database_password value

# Port on which the database is located
#  mysql 3306 , postgresql 5432 (default: not defined)
; database_port value

############################################################
# Database Options For SQLite3
############################################################

# SQLite3 database (file path) (default: not defined)
; sqlite3_db value



############################################################
# Video Loopback Device (vloopback project)
############################################################

# Output images to a video4linux loopback device
# The value '-' means next available (default: not defined)
; video_pipe value

# Output motion images to a video4linux loopback device
# The value '-' means next available (default: not defined)
; motion_video_pipe value


##############################################################
# Thread config files - One for each camera.
# Except if only one camera - You only need this config file.
# If you have more than one camera you MUST define one thread
# config file for each camera in addition to this config file.
##############################################################

# Remember: If you have more than one camera you must have one
# thread file for each camera. E.g. 2 cameras requires 3 files:
# This motion.conf file AND thread1.conf and thread2.conf.
# Only put the options that are unique to each camera in the
# thread config files.
; thread /etc/motion/thread1.conf
; thread /etc/motion/thread2.conf
; thread /etc/motion/thread3.conf
; thread /etc/motion/thread4.conf