iizukanao/picam

picam version 2.0.12
Usage: picam [options]

Options:
 [video]
  -w, --width <num>   Width in pixels (default: 1920)
  -h, --height <num>  Height in pixels (default: 1080)
  -v, --videobitrate <num>  Video bit rate (default: 3000000)
                      Set 0 to disable rate control
  -f, --fps <num>     Frame rate (default: 30.0)
  -g, --gopsize <num>  GOP size (default: same value as fps)
  --vfr               Enable variable frame rate. GOP size will be
                      dynamically controlled.
  --minfps <num>      Minimum frames per second. Implies --vfr.
  --maxfps <num>      Maximum frames per second. Implies --vfr.
  --hflip             Flip image horizontally
  --vflip             Flip image vertically
  --avcprofile <str>  Set AVC/H.264 profile to one of:
                      constrained_baseline/baseline/main/high
                      (default: high)
  --avclevel <value>  Set AVC/H.264 level (default: 4.1)
  --brightness <num>  Adjust image brightness (default: 0.0)
                      0.0=unchanged / -1.0=darkest / 1.0=brightest
  --contrast <num>    Adjust image contrast (default: 1.0)
                      1.0=normal / >1.0=more contrast
  --saturation <num>  Adjust image color saturation (default: 1.0)
                      1.0=normal / 0.0=grayscale / >1.0=more saturated
  --sharpness <num>   Adjust image sharpness (default: 0.0)
                      0.0=no sharpening / >0.0=sharpened
 [audio]
  -c, --channels <num>  Audio channels (1=mono, 2=stereo)
                      Default is mono. If it fails, stereo is used.
  -r, --samplerate <num>  Audio sample rate (default: 48000)
                      The sample rates supported by libfdk_aac encoder are:
                      8000, 11025, 12000, 16000, 22050, 24000,
                      32000, 44100, 48000, 64000, 88200, 96000
  -a, --audiobitrate <num>  Audio bit rate (default: 40000)
  --alsadev <dev>     ALSA microphone device (default: hw:0,0)
  --volume <num>      Amplify audio by multiplying the volume by <num>
                      (default: 1.0)
  --ngate <t,a,h,r>   Enable noise gate and set <threshold volume, attack/hold/release times>
                      optional parameters. Defaults: 1.00, 0.20, 1.00, 0.50.
                      Enter - to use a parameter default.
  --noaudio           Disable audio capturing
  --audiopreview      Enable audio preview
  --audiopreviewdev <dev>  Audio preview output device (default: plughw:0,0)
 [HTTP Live Streaming (HLS)]
  -o, --hlsdir <dir>  Generate HTTP Live Streaming files in <dir>
  --hlsnumberofsegments <num>  Set the number of segments in the m3u8 playlist (default: 3)
  --hlskeyframespersegment <num>  Set the number of keyframes per video segment (default: 1)
  --hlsenc            Enable HLS encryption
  --hlsenckeyuri <uri>  Set HLS encryption key URI (default: stream.key)
  --hlsenckey <hex>   Set HLS encryption key in hex string
                      (default: 75b0a81de17487c88a47507a7e1fdf73)
  --hlsenciv <hex>    Set HLS encryption IV in hex string
                      (default: 000102030405060708090a0b0c0d0e0f)
 [output for node-rtsp-rtmp-server]
  --rtspout           Enable output for node-rtsp-rtmp-server
  --rtspvideocontrol <path>  Set video control socket path
                      (default: /tmp/node_rtsp_rtmp_videoControl)
  --rtspaudiocontrol <path>  Set audio control socket path
                      (default: /tmp/node_rtsp_rtmp_audioControl)
  --rtspvideodata <path>  Set video data socket path
                      (default: /tmp/node_rtsp_rtmp_videoData)
  --rtspaudiodata <path>  Set audio data socket path
                      (default: /tmp/node_rtsp_rtmp_audioData)
 [MPEG-TS output via TCP]
  --tcpout <url>      Enable TCP output to <url>
                      (e.g. --tcpout tcp://127.0.0.1:8181)
 [camera]
  --camera <num>      Choose the camera to use. Use --query to list the cameras.
  --autoex            Enable automatic control of camera exposure between
                      daylight and night modes. This forces --vfr enabled.
  --autoexthreshold <num>  When average value of Y (brightness) for
                      10 milliseconds of captured image falls below <num>,
                      camera exposure will change to night mode. Otherwise
                      camera exposure is in daylight mode. Implies --autoex.
                      (default: 5.0)
                      If --verbose option is enabled as well, average value of
                      Y is printed like y=28.0.
  --ex <value>        Set camera exposure. Implies --vfr. <value> is one of:
                        normal short long custom
  --wb <value>        Set white balance. <value> is one of:
                        off: Disable auto white balance control
                        auto: Search over the whole colour temperature range (default)
                        incandescent: Incandescent AWB lamp mode
                        tungsten: Tungsten AWB lamp mode
                        fluorescent: Fluorescent AWB lamp mode
                        indoor: Indoor AWB lighting mode
                        daylight: Daylight AWB lighting mode
                        cloudy: Cloudy AWB lighting mode
                        custom: Custom AWB mode
  --wbred <num>       Red gain. Implies "--wb off". (0.0 .. 8.0)
  --wbblue <num>      Blue gain. Implies "--wb off". (0.0 .. 8.0)
  --metering <value>  Set metering type. <value> is one of:
                        center: Center-weighted metering mode (default)
                        spot: Spot metering mode
                        matrix: Matrix metering mode
                        custom: Custom metering mode
  --evcomp <num>      Set Exposure Value compensation (-8..8) (default: 0)
  --shutter <num>     Set shutter speed in microseconds (default: auto).
                      Implies --vfr.
  --nohdr             Disable HDR mode. HDR is enabled by default on Camera Module 3.
  --roi <x,y,w,h>     Set region of interest (crop rect) in ratio (0.0-1.0).
                      (default: 0,0,1,1)
                      --roi affects performance and may reduce fps.
  -p, --preview       Display fullscreen preview
  --previewrect <x,y,width,height>
                      Display preview window at specified position
  --hdmi              Preview output HDMI port (0 or 1; default=0)
                      HDMI port selection only works in console mode (when X is not running)
  --query             Query camera capabilities then exit
 [autofocus] (available on Camera Module 3)
  --autofocus-mode <mode>  AF (autofocus) algorithm. <mode> is one of:
                      continuous: Continuous autofocus (default)
                      manual: Manual mode
  --lens-position <num>  Move lens to the reciprocal of the focal distance in
                      meters, also known as diopters. Implies "--autofocus-mode manual".
                      To focus on objects 2m away, use 0.5 (1m / 0.5 = 2m).
                      To focus on objects 25cm away, use 4 (1m / 4 = 0.25m).
                      Use 0 for maximum focus distance.
 [timestamp] (may be a bit heavy on Raspberry Pi 1)
  --time              Enable timestamp
  --timeformat <spec>  Timestamp format (see "man strftime" for spec)
                       (default: "%a %b %d %l:%M:%S %p")
  --timelayout <spec>  Timestamp position (relative mode)
                       layout is comma-separated list of:
                        top middle bottom  left center right
                       (default: bottom,right)
  --timehorizmargin <px>  Horizontal margin from edge (default: 10).
                          Effective only if --timelayout is used.
  --timevertmargin <px>  Vertical margin from edge (default: 10).
                         Effective only if --timelayout is used.
  --timepos <x,y>     Timestamp position (absolute mode)
  --timefontname <name>  Timestamp font name (default: FreeMono:style=Bold)
  --timefontfile <file>  Timestamp font file. This invalidates --timefontname.
  --timefontface <num>  Timestamp font face index (default: 0).
                        Effective only if --timefontfile is used.
  --timept <pt>       Text size in points (default: 14.0)
  --timedpi <num>     DPI for calculating text size (default: 96)
  --timecolor <hex>   Text color (default: ffffff)
  --timestrokecolor <hex>  Text stroke color (default: 000000)
                      Note that texts are rendered in grayscale.
  --timestrokewidth <pt>  Text stroke border radius (default: 1.3).
                          To disable stroking borders, set this value to 0.
  --timespacing <px>  Additional letter spacing (default: 0)
 [misc]
  --recordbuf <num>   Start recording from <num> keyframes ago
                      (must be >= 1; default: 5)
  --statedir <dir>    Set state dir (default: state)
  --hooksdir <dir>    Set hooks dir (default: hooks)
  -q, --quiet         Suppress all output except errors
  --verbose           Enable verbose output
  --version           Print program version
  --help              Print this help

location /hls/ {
	root /run/shm;
}

rtmp {
    server {
        listen 1935;
        chunk_size 4000;
        application webcam {
            live on;

            exec_static /path/to/ffmpeg -i tcp://127.0.0.1:8181?listen
                                        -c:v copy -ar 44100 -ab 40000
                                        -f flv rtmp://localhost:1935/webcam/mystream;
        }
    }
}