Unable to get RTSP feed with USB Cam #118

EduardoRonchi · 2021-10-08T19:52:19Z

Hello, first of all thanks for this project!

I am using a Raspberry Pi 4 with a RPI Cam V2 and a thermal USB Camera (Lepton 3.5 + PureThermal Mini).

For the RPI Cam V2 it works fine, but when I try to use the USB Camera I cannot retrieve the RTSP stream.

Everything seems fine and similar to the RPI Cam V2, but I cannot get the stream.

I am using a simple python script the read the stream

import cv2
vcap = cv2.VideoCapture("rtsp://admin:[email protected]:8000/h264")
while(1):
    ret, frame = vcap.read()
    cv2.imshow('VIDEO', frame)
    cv2.waitKey(1)

The output of this program is the following:

[rtsp @ 0x226dfd0] method DESCRIBE failed: 503 Service Unavailable
Traceback (most recent call last):
  File "rtsp_viewer.py", line 6, in <module>
    cv2.imshow('VIDEO', frame)
cv2.error: OpenCV(4.4.0) /tmp/pip-wheel-2l8ccy47/opencv-python/opencv/modules/highgui/src/window.cpp:376: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'imshow'

It seems that the image is None. But the same config works fine when changing the device (from /dev/video0 to /dev/video2) from the usb cam to the RPI Cam.

My rposConfig.json file:

{
  "NetworkAdapters" : ["awdl0","eth0", "wlan0", "en0"], 
  "IpAddress" : "192.168.137.230",
  "ServicePort" : 10000,
  "Username" : "admin",
  "Password" : "admin",
  "CameraType" : "usbcam",
  "CameraDevice" : "/dev/video0",
  "RTSPAddress" : "", "//":"Normally left blank. Used to set RTSP Server Address",
  "RTSPPort" : 8000,
  "RTSPName" : "h264",
  "MulticastEnabled"  : false, "MulticastEnabledComment" : "## Multicast is not supported for USB camera",
  "RTSPMulticastName" : "h264m",
  "MulticastAddress"  : "224.0.0.1",
  "MulticastPort"     : "10001",
  "RTSPServer" : 3, "RtspServerComment" : "## Select RTSP Server > 1:RPOS RTSP Server 2:V4L2 RTSP Server by mpromonet (auto selected if MulticastEnabled=true)",
  "PTZDriver" : "none", "PTZDriverComment": "## valid values are none,tenx,pelcod,visca and pan-tilt-hat",
  "PTZOutput" : "none", "PTZOutputComment": "## values are none (eg Tenx), serial and tcp",
  "PTZSerialPort" : "/dev/ttyUSB0",
  "PTZSerialPortSettings" : { "baudRate":2400, "dataBits":8, "parity":"none", "stopBits":1 },
  "PTZOutputURL": "127.0.0.1:9999",
  "PTZCameraAddress": 1,
  "DeviceInformation" : {
    "Manufacturer" : "Raspberry Pi",
    "Model" : "4 B",
    "HardwareId" : ""
  },
  "logLevel" : 4, "logLevelComment": "## LogLevels are > 1:Error 2:Warning 3:Info 4:Debug",
  "logSoapCalls" : false
}

Any idea of what I am doing wrong?
Note: The USB camera resolution is 160x120, it is a thermal camera. The camera is working, I can get the video by doing: ffplay /dev/video0

The text was updated successfully, but these errors were encountered:

RogerHardiman · 2021-10-15T08:30:04Z

You are doing the right sort of things - RTSP type (in the config) is 3 for Gstreamer.
You are right about the size.

RPOS calls a python script which makes the GStreamer pipeline. That tries to open /dev/videoN with a certain resolution. So I'd go poking about in the python program and find the lines where it makes the GStreamer launch string and just get it to open the v4l2 device without forcing a width and height.
I had to do something similar here on my camera that only runs at 640x480 whereas the author of the USB component had a 1920x1080 HD USB camera.

RogerHardiman · 2021-10-15T08:32:07Z

just looked at the screen grab.
It prints the gstreamer string on the screen and I can see it says "device=undefined" so it is not getting passed the right USB device path

EduardoRonchi · 2021-10-15T09:04:42Z

Ok, thanks! Ah, this printscreen is outdated. This “device=undefined” was due to the facts that I was using the RPI config file. When I updated the config file for the usbcam it shows the right device. I can’t post the image right now, but I’ll update here after. After changing the config file the output is the same, still can’t get the video stream. Thanks! Em sex, 15 de out de 2021 às 05:32, Roger Hardiman ***@***.***> escreveu:

…

just looked at the screen grab. It prints the gstreamer string on the screen and I can see it says "device=undefined" so it is not getting passed the right USB device path — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#118 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ANATRQWSNTMJ7ZOY5UQTLXDUG7RJDANCNFSM5FUJR4TQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

EduardoRonchi · 2021-10-16T20:13:16Z

Thats the updated output:

pi@raspberrypi:~/rpos $ node rpos.js
execSync('cat /proc/device-tree/model')
execSync('cat /proc/cpuinfo')
Read IP address from awdl0 failed
Read IP address from eth0 failed
Read IP address 192.168.137.230 from wlan0
Manufacturer : Raspberry Pi
Model : 4 B
HardwareId : 
SerialNumber : 10000000bc35458e
FirmwareVersion : 2.1.0
Starting camera settings webserver on http://192.168.137.230:10000/
execSync('v4l2-ctl --set-fmt-video=pixelformat=4')
execSync('v4l2-ctl --set-fmt-video=width=1280,height=720')
execSync('v4l2-ctl --set-parm=25')
execSync('v4l2-ctl --set-priority=3')
execSync('v4l2-ctl -l')
Controlvalue 'brightness' : 128
value: 128 not in range: 0 - 100
Controlvalue 'contrast' : 128
value: 128 not in range: -100 - 100
Could not retrieve Controlvalue 'saturation'
Could not retrieve Controlvalue 'red_balance'
Could not retrieve Controlvalue 'blue_balance'
Could not retrieve Controlvalue 'horizontal_flip'
Could not retrieve Controlvalue 'vertical_flip'
Could not retrieve Controlvalue 'power_line_frequency'
Could not retrieve Controlvalue 'sharpness'
Could not retrieve Controlvalue 'color_effects'
Could not retrieve Controlvalue 'rotate'
Could not retrieve Controlvalue 'color_effects_cbcr'
Could not retrieve Controlvalue 'video_bitrate_mode'
Could not retrieve Controlvalue 'video_bitrate'
Could not retrieve Controlvalue 'repeat_sequence_header'
Could not retrieve Controlvalue 'h264_i_frame_period'
Could not retrieve Controlvalue 'h264_level'
Could not retrieve Controlvalue 'h264_profile'
Could not retrieve Controlvalue 'auto_exposure'
Could not retrieve Controlvalue 'exposure_time_absolute'
Could not retrieve Controlvalue 'exposure_dynamic_framerate'
Could not retrieve Controlvalue 'auto_exposure_bias'
Could not retrieve Controlvalue 'white_balance_auto_preset'
Could not retrieve Controlvalue 'image_stabilization'
Could not retrieve Controlvalue 'iso_sensitivity'
Could not retrieve Controlvalue 'exposure_metering_mode'
Could not retrieve Controlvalue 'scene_mode'
Could not retrieve Controlvalue 'compression_quality'
Binding DeviceService to http://192.168.137.230:10000/onvif/device_service
Binding MediaService to http://192.168.137.230:10000/onvif/media_service
Binding PTZService to http://192.168.137.230:10000/onvif/ptz_service
Binding ImagingService to http://192.168.137.230:10000/onvif/imaging_service
discovery_service started
Starting Live555 rtsp server
spawn('./python/gst-rtsp-launch.sh', [-P,8000,-u,h264,-W,1280,-H,720,-d,/dev/video0], undefined)
media_service started
imaging_service started
device_service started
ptz_service started
rtspServer: -P 8000 -u h264 -W 1280 -H 720 -d /dev/video0

rtspServer: INFO:root:StreamServer initialized

rtspServer: INFO:root:Video settings loaded from v4l2ctl.json

rtspServer: DEBUG:root:StreamServer.launch
INFO:root:USB camera ignored most of the parameters

rtspServer: DEBUG:root:( v4l2src device=/dev/video0 brightness=50 contrast=0 saturation=0 ! image/jpeg,width=1280,height=720,framerate=30/1 ! jpegdec ! clockoverlay ! omxh264enc target-bitrate=10000000 control-rate=variable ! video/x-h264,profile=baseline ! h264parse ! rtph264pay name=pay0 pt=96 )
INFO:root:Starting service on port 8000 at url /h264

rtspServer: INFO:root:Running RTSP Server

I also enabled verbose and after some time (under one minute) I get this infos:

Discovery received from 192.168.137.1
(node:359) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
DeviceService received request GetSystemDateAndTime
DeviceService received request GetCapabilities
MediaService received request GetProfiles
MediaService received request GetStreamUri
MediaService received request GetSnapshotUri
PTZService received request GetConfigurations
PTZService received request GetConfigurationOptions

Folloing are the print screen of the output

GeniusOnline · 2021-11-24T13:56:00Z

@RogerHardiman @EduardoRonchi any update on this?
i'm having the same issue using a v4l2loopback device #123

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Unable to get RTSP feed with USB Cam #118

Unable to get RTSP feed with USB Cam #118

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Unable to get RTSP feed with USB Cam #118

Unable to get RTSP feed with USB Cam #118

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