This is a second edition of a project:
https://github.com/Alexey-Tsarev/cam_streamer_bash
This is a Python script, which allows you to capture, store,
rotate (remove old data) and restream Web/IP camera streams.
It works on "any" PC that has Python, GStreamer, FFmpeg.
It tested and works on Raspberry Pi: Video encoding is forced by the "OpenMAX" Raspberry Pi hardware acceleration: https://jan.newmarch.name/LinuxSound/Sampled/OpenMAX/
GStreamer is used for video/audio captures and cameras streaming.
Main config is in the cfg/main.cfg file.
All GStreamer's pipelines are in the cfg/*.cfg files and you can easily change them for your needs.
By default GStreamer streams to the Nimble server https://wmspanel.com/nimble (it's free and it works on Raspberry Pi)
via rtmp in flv format (h264 video, aac audio).
And at the same time the script stores streams using FFmpeg.
Nimble server allows to restream captured data via rtsp, http.
In this case it's easy to add all capturing streams to the Ivideon service:
https://ivideon.com (you will need the Ivideon Server installed).
There are two options to remove old data:
- keep cameras data less then some desired size
- keep free space where cameras data is located less than some desired size
This is the top command output on a Raspberry Pi 2:
top - 11:13:33 up 9:39, 3 users, load average: 1.97, 1.98, 2.00
Tasks: 166 total, 1 running, 165 sleeping, 0 stopped, 0 zombie
%Cpu(s): 15.0 us, 3.2 sy, 0.0 ni, 79.2 id, 0.0 wa, 0.0 hi, 2.6 si, 0.0 st
KiB Mem: 752876 total, 738752 used, 14124 free, 63904 buffers
KiB Swap: 1023996 total, 24 used, 1023972 free. 521824 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1463 pi 20 0 169104 19416 8204 S 52.0 2.6 303:38.20 gst-launch-1.0 v4l2src device=/dev/v4l/by-id/usb-Sonix_Technology_+
1450 pi 20 0 163220 13312 5904 S 13.9 1.8 100:37.34 gst-launch-1.0 v4l2src device=/dev/v4l/by-id/usb-046d_09a4_C9469E2+
1498 pi 20 0 128252 12052 5452 S 7.4 1.6 43:02.80 gst-launch-1.0 v4l2src device=/dev/v4l/by-id/usb-Etron_Technology_+
906 root 20 0 321476 41548 4572 S 6.5 5.5 35:46.40 /usr/bin/nimble -d --conf-dir=/etc/nimble --log-dir=/var/log/nimbl+
12213 root 20 0 5252 2380 1952 R 4.6 0.3 0:00.55 top -d 1
...
In the above example there are 3 USB cameras with the following parameters:
1463 pid: 1280x720 h264 video + aac audio
1450 pid: 640x480 h264 video + aac audio
1498 pid: 640x480 h264 video, no audio
Mostly the same for a Raspberry Pi 3:
$ grep Revision /proc/cpuinfo
Revision : a22082
Tasks: 177 total, 1 running, 176 sleeping, 0 stopped, 0 zombie
%Cpu(s): 12.3 us, 0.8 sy, 0.0 ni, 84.5 id, 0.0 wa, 0.0 hi, 2.4 si, 0.0 st
KiB Mem: 752872 total, 490548 used, 262324 free, 26772 buffers
KiB Swap: 1023996 total, 0 used, 1023996 free. 323548 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1660 pi 20 0 167892 27348 17668 S 40.3 3.6 22:57.02 gst-launch-1.0 v4l2src device=/dev/v4l/by-id/usb-Sonix_Technology_+
1695 pi 20 0 126748 19724 14240 S 7.7 2.6 3:51.37 gst-launch-1.0 v4l2src device=/dev/v4l/by-id/usb-Etron_Technology_+
1647 pi 20 0 163260 22284 15036 S 4.8 3.0 6:10.85 gst-launch-1.0 v4l2src device=/dev/v4l/by-id/usb-046d_09a4_C9469E2+
1150 root 20 0 314780 39016 7500 S 3.8 5.2 2:07.54 /usr/bin/nimble -d --conf-dir=/etc/nimble --log-dir=/var/log/nimbl+
Python 3 only.
Create a virtualenv (not required and depends on you):
virtualenv .venv
. .venv/bin/activate
Install dependencies:
pip3 install -r requirements.txt
No virtualenv:
python3 cam_streamer.py -log_level INFO -daemon start
Run virtualenv through wrapper:
./cam_streamer_daemon_cmd.sh restart INFO
Logs:
tail -f log/main.log
Author: Alexey Tsarev
Email: [email protected]