systemd

README.md

@@ -1,9 +1,12 @@
 
 Prerequisities
 --------------
+Update the Raspberry Pi OS
+> `sudo apt update`  
+`sudo apt full-upgrade`
 
 Install the collection of command line video4linux utilities
-> `sudo apt-get install v4l-utils`
+> `sudo apt install v4l-utils ffmpeg`
 
 Lists all available cameras
 > `v4l2-ctl --list-devices`  
@@ -64,14 +67,9 @@ Or using ffmpeg
 Compressed:       mjpeg :          Motion-JPEG : 160x120 176x144 320x240 352x288 640x480 800x600 960x720
 Raw       :     yuyv422 :           YUYV 4:2:2 : 160x120 176x144 320x240 352x288 640x480 800x600 960x720 1600x1200
 ```
-Lists all available audio recording devices
-> `arecord -l`  
-```
-**** List of CAPTURE Hardware Devices ****
-card 1: Q9000 [QuickCam Pro 9000], device 0: USB Audio [USB Audio]
-  Subdevices: 1/1
-  Subdevice #0: subdevice #0
-```
+Record a video
+> `ffmpeg -f v4l2 -input_format h264 -video_size 1920x1080 -framerate 30 -i /dev/video0 -vcodec copy video.mp4`
+
 Live Streaming
 --------------
 Use you own `LIVE-STREAM-KEY` and run
@@ -84,6 +82,14 @@ Note: Does not work on Waylad ([What is Wayland in Linux Distros and Should You
 > `DISPLAY=:0 ffmpeg -hide_banner -f x11grab -framerate 5 -video_size 830x630 -i :0.0+50,95 -vf format=pix_fmts=yuv420p -vcodec libx264 -tune zerolatency -preset veryfast -f flv rtmp://peertube.virtonline.eu:1935/live/LIVE-STREAM-KEY`
 
 ### Live stream camera with sound and desktop as an overlay to peertube
+Lists all available audio recording devices
+> `arecord -l`  
+```
+**** List of CAPTURE Hardware Devices ****
+card 1: Q9000 [QuickCam Pro 9000], device 0: USB Audio [USB Audio]
+  Subdevices: 1/1
+  Subdevice #0: subdevice #0
+```
 > `DISPLAY=:0` # select display (only if run remotely e.g. ssh)  
 `ffmpeg -hide_banner` # do not output compile flags  
 `-thread_queue_size 4096 -f pulse -ac 2 -i default` # audio input from PulseAudio  
@@ -105,56 +111,52 @@ Use the dockerized ffmpeg with precompiled vaapi support, adjust `/dev/video2`
 Adjust `/dev/video2`, `-video_size 1920x1080 -framerate 60` and stream to peertube (if it can handle that much)
 > `ffmpeg -hide_banner -y -f v4l2 -input_format mjpeg -video_size 1920x1080 -framerate 60 -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i /dev/video2 -vf 'scale_vaapi=format=nv12' -c:v h264_vaapi -b:v 10M -f flv rtmp://peertube.virtonline.eu:1935/live/LIVE-STREAM-KEY`
 
-### Setup a systemd service for the non-stop streaming
-Adjust `jrottenberg/ffmpeg:4.4-alpine` if you want to use a specific ffmpeg version. For Raspberry Pi (ARM) see https://github.com/colin-nolan/docker-ffmpeg-rpi
+### Setup a systemd service for a non-stop streaming
 ```
-sudo tee /etc/systemd/system/virt-garage-webcam-streamer.service <<EOF
+sudo tee /etc/systemd/system/webcam-streamer.service <<EOF
 [Unit]
-Description=Garage Webcam Streamer service
-Requires=docker.service
-After=docker.service
+Description=Webcam Streamer service
+Requires=network-online.target
+After=network-online.target
 DefaultDependencies=no
 
 [Service]
 Type=simple
 
 Environment="HOME=/root"
-Environment=WEBCAM_URI="rtsp://garagecam.virtonline.eu:554/live3.sdp"
 Environment=PEERTUBE_LIVE="rtmp://peertube.virtonline.eu:1935/live/LIVE-STREAM-KEY"
-Environment=FFMPEG="docker run --rm --name virt-garage-webcam-streamer jrottenberg/ffmpeg:4.4-alpine"
 
-ExecStartPre=-/usr/bin/env sh -c '/usr/bin/env docker kill virt-garage-webcam-streamer 2>/dev/null || true'
-ExecStartPre=-/usr/bin/env sh -c '/usr/bin/env docker rm virt-garage-webcam-streamer 2>/dev/null || true'
+ExecStartPre=-/usr/bin/env sh -c 'killall ffmpeg 2>/dev/null || true'
 
-# Re-stream (Audio/Video) from IP camera to peertube live
-ExecStart=/bin/bash -c '${FFMPEG} -loglevel error \
-				-i ${WEBCAM_URI} \
-				-c copy \
-				-f flv \
+ExecStart=/bin/bash -c 'ffmpeg -loglevel error \
+				-f v4l2 -input_format h264 \
+				-video_size 1920x1080 \
+				-framerate 20 \
+				-i /dev/video0 \
+				-c copy -f flv \
+				-tune zerolatency \
 				${PEERTUBE_LIVE}'
 
-ExecStop=-/usr/bin/env sh -c '/usr/bin/env docker kill virt-garage-webcam-streamer 2>/dev/null || true'
-ExecStop=-/usr/bin/env sh -c '/usr/bin/env docker rm virt-garage-webcam-streamer 2>/dev/null || true'
+ExecStop=-/usr/bin/env sh -c 'killall ffmpeg 2>/dev/null || true'
 Restart=always
 RestartSec=5
-SyslogIdentifier=virt-garage-webcam-streamer
+SyslogIdentifier=webcam-streamer
 
 [Install]
 WantedBy=multi-user.target
 EOF
 ```
 Reload systemd manager configuration  
-
 `sudo systemctl daemon-reload`
 
-Enable the virt-garage-webcam-streamer service at boot time and also run it
-
-`sudo systemctl enable --now virt-garage-webcam-streamer`
+Start the service  
+`sudo systemctl start webcam-streamer`
 
 If it does not work check logs  
+`journalctl -f -u webcam-streamer`
 
-`journalctl -f -u virt-garage-webcam-streamer`
-
+Enable the webcam-streamer service at boot time  
+`sudo systemctl enable webcam-streamer`
 
 ### Transcode and scale video file (and copy audio) using VAAPI (see [HWAccelIntro](https://trac.ffmpeg.org/wiki/HWAccelIntro))
 > `alias ffmpeg='docker run --rm -w $(pwd) -v $(pwd):$(pwd) --device=/dev/dri jrottenberg/ffmpeg:vaapi'`