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Questions tagged [webcam]

A webcam is a device that records video and then uploads that video to a computer.

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2answers
1k views

Accessing Cam Web Interface over a VPN

I have 2 Raspbery Pi's (B+) set up in 2 different locations: RPi 1 is at home. It is connected to the internet and port forwarding is allowed. I am able to SSH into it from another location. I have ...
3
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1answer
375 views

Webcam works for a couple of hours, then Pi refuses to detect it

I am currently playing around with a Trust WB-1400T webcam. While this is "unsupported", I got it to work with motion. After a couple of hours of playing, I noticed that motion failed to connect to ...
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1answer
547 views

USB cam with raspberry pi 3: achieving maximum FPS

I am using a ub camera with raspberry pi. When I run v4l2-ctl --list-formats-xext, I get the max FPS is 15 with resolution of 2592x1944. However when I run ffmpeg -t 5 -f v4l2 -framerate 15 -...
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1answer
66 views

Running pygame and webcam works from command line not when using a service

I am writing a small program for a Museum display that captures a still from a webcam, displays it on screen, waits a few seconds and takes another, loop forever. This all works fine from the command ...
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1answer
306 views

Raspberry Pi Zero as webcam

I read some case, like using dwc2 and g_webcam in /boot/config and cmdline. but hard to understand and doesn't work. and can't find a tutorial, there are some tutorials only about serial and ethernet. ...
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1answer
140 views

What happens if I force_turbo (and over_voltage) but do not increase ARM, etc

I have had issues with running RPI cam control and pikrell cam on Pi Zero W and found a post where it was recommended to use: over_voltage=4 force_turbo=1 (https://www.raspberrypi.org/forums/...
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1answer
210 views

Octo print with Pi Cam works fine, added webcam but can't find the Pi cam any more

I've been using my raspberry pi cam module wonderfully for a while and it's attached to the corner of my print bed so I can monitor the first few layers and general build. I want to add a webcam to do ...
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1answer
524 views

QCamera get error “mesa-loader failed to retrieve device information”

Qt test code: QCamera* camera = new QCamera; auto viewfinder = new QCameraViewfinder(); camera->setViewfinder(viewfinder); viewfinder->show(); camera->start(); Output: mesa-loader failed ...
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1answer
60 views

Raspberry PI2 under voltage with a standard microsoft webcam connected.

I am attempted to setup my octopi IOS to connect to my 3d printer. I've got everything connected and configured however, noticed during the boot process, when the USB webcam is connected, i get the ...
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1answer
1k views

Problem with every even photo using USB camera

I use Raspberry Pi 3 with Linux RaspberryPi 4.9.59-v7+ onboard together with Logitech HD Webcam C270. It works quite well, I am able to preview video stream in Qt V4l2 Test Utility, take a photo with ...
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1answer
115 views

Freeze caused by bluetooth and webcam

My web app has a webcam running using ng-camera(based on webcam.js), and a separate bluetooth sniffer running on node js on the background. After several minutes running, the app and raspberry pi will ...
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1answer
157 views

When I plug a USB camera in I get strange characters displaying on the screen

I have a raspberry pi B+ running the latest Jessie image (Linux raspberrypi 4.9.22+ ). I have a monitor, usb keyboard and usb mouse plugged into it. I also have a wired ethernet plugged in. No other ...
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1answer
12k views

Raspberry pi Webcam stream with ffmpeg

Hello i am using ffserver with ffmpeg to stream a video with audio from web cam. The ffserver.conf file is : Port 80 BindAddress 0.0.0.0 MaxClients 10 MaxBandwidth 50000 NoDaemon <Feed webcam.ffm&...
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1answer
680 views

Zoneminder image problem

this is my first Raspberry Pi project, I'm making home surveillance system with Raspberry Pi and Zoneminder. I got it all up and running expect one and the most important thing, image, I can see the ...
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0answers
489 views

Unable to capture high-quality video on pi in Java(FX)

Current I am developing a JavaFX application that should display video to the user. I use https://github.com/sarxos/webcam-capture to retreive video data. I use v4l4j to get video on the pi. I use ...
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0answers
40 views

webcam issue after UV4L installation

I am trying to make a usb webcam work on my rpi but it drives my nuts. I have Rpi 3 model B+ Also I've downloaded the newest raspbian image (stretch with desktop and recommended software). It's ...
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0answers
797 views

Stream a camera, and get the video feed on Java

For my project, I have two USB cameras. I would like to plug them to the Raspberry Pi to stream over the internet. Also, I am developing a software in Java, and these videos streams (2) have to be ...
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0answers
1k views

Corrupt JPEG data: extraneous bytes before marker, OpenCV C++, Raspberry Pi

I am trying to run OpenCV application on Raspberry PI. When video capture from an external camera starts (Logitech C270), the messages below are printed out: Corrupt JPEG data: 1 extemporaneous bytes ...
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0answers
92 views

Error opening USB Cam with OpenCV4: GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed

After installing OpenCV4.0 on my RPi, i tried a simple script below with a Logitech USB Cam (720p) but at "cam = cv2.VideoCapture(0)" it gives me an error "(python:num process): GStreamer-CRITICAL **: ...
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0answers
24 views

The first picture I take with a USB webcam as soon as I connect it looks good, but the following ones are dark

I am experiencing the following issue: I connect a USB webcam (Logitech Quickcam Pro 4000) to my Raspberry Pi 3 B+ and take a picture using fswebcam and looks good. Sometimes I take a second picture,...
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0answers
25 views

How to connect/link two raspberry pies for video precessing?

i am fairly new to raspberry pi platform so this question may be too basic. I am working on a project where i need at least 2 camera modules for simultaneous video recording and processing and taking ...
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0answers
153 views

Live video streaming over bluetooth

I'm currently making a little project, and i need my Raspberry Pi 3b to transmit an USB webcam stream trough Bluetooth to display to an Android smartphone or any other portable device (like another ...
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0answers
336 views

PS3 Eye USB Camera Not Detected - Raspbian Stretch

After updating to Raspbian Stretch (kernel 4.14.90-v7+), my Playstation 3 Eye camera is no longer detected on any of the three Pi3 Model Bs that I have. lsusb does not report the device and dmesg ...
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0answers
889 views

PS3 eye's 4ch microphone with the Raspberry Pi

Recently I have been trying to get the 4ch microphone on the sony playstation 3 eye to work with my Raspberry Pi 3B (running the latest OS of raspian-stretch to date (2018-06-27 version) as a part of ...
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0answers
1k views

Getting UV4L working with USB camera

I have installed the UV4L suite of software onto RPi3 with Jessie. I am using a USB cam (Logitech C170) rather than RPi cam. I have been struggling to get this working reliably. Initially I could ...
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0answers
231 views

c310 logitech webcam not closing properly in pygame code

I'm accessing my c310 logitech webcam in python with pygame in an attempt to take pictures and save them. My final goal is to take a new picture every minute for 24 hours to make a timelapse. Here is ...
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0answers
736 views

RTSP Webcam stream video+audio

Im trying to stream audio and video using cvlc from a Logitech C920 using RTSP, I have got video to work but not audio. cvlc --sout=#rtp{sdp=rtsp://:8554/} 'v4l2:///dev/video0:chroma=H264:width=1280:...
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0answers
145 views

Python Google drive upload not working continuously

I am trying to build an auto image Google drive up-loader with raspberry pi and a web-cam but the python script I wrote after executing once properly doesn't seem to work if I execute it again ...
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0answers
1k views

how to close fswebcam after using it in python

I used fswebcam in python together with os.system() but i do not know how to close it after using it is in a loop that is why I want to close it like the picamera.close()
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0answers
711 views

'Motion' port not responding - “This site can't be reached”

I've set up my Pi as a web server and I am using RaspCTL as the dynamic DNS. I can access my site via [mysite].raspctl.com from my home network and from an external network. Great! I'm also trying ...
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0answers
6k views

Best FFMPEG configuration for recording Video+Audio with RaspberryPi and USB WebCam

I've spent so much time trying to figure out how this FFMPEG and their libraries work :( I have a RaspberryPi 2B and a Logitech USB Webcam. Here is the input from FFMPEG list from my /dev/video0: ...
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0answers
435 views

Unmount USB Camera

I'm working in a Python app with opencv and a USB camera. Sometimes the camera driver throws an exception: OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cvtColor, file /home/pi/opencv-2....
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0answers
665 views

Multiple webcams - cannot open in openCV & corrupted image

I've connected four USB webcams via well powered USB hub to RasPi2. I want to use them in openCV. So I setup a simple program, where I opened the cameras using cvCaptureFromCAM, captured a cv::Mat and ...
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0answers
306 views

Webcam doesn't work on Raspberry Pi VIDIOC-QUERYMENU: Invalid Argument

So I wrote an image processing program in Python on my windows computer and it works fine there, but when I try to run it on the Raspberry Pi I get VIDIOC-QUERYMENU: Invalid Argument a bunch of times. ...
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0answers
1k views

mplayer doen't show webcam

i can't display images from my webcam using mplayer i followed this article: monitor a webcam but i got this error: pi@raspberrypi ~ $ mplayer tv:///dev/video0 MPlayer svn r34540 (Raspbian), built ...
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0answers
973 views

Using motionPie: I'm stuck trying to install a camera driver

I'm trying to set up a raspberry pi for these tasks: streaming video over a network listening to commands (I'm not yet sure how to do that) over network parse commands and control a slave connected ...
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0answers
845 views

raspberry Pi and processing problem with Camera Capture

I installed Processing 2.2.1 (linux) on the RasPi (running Debian Wheezy) to connect a USB-Webcam and capture video stream with the standart processing.video* library. When I try to run the program (...
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0answers
2k views

Logitech QuickCam Messenger Communicator webcam drivers

Im trying to figure out if I can get the logitech messenger communicator webcam working with the Pi. (no, its not on the supported software list) In searching for drivers, I came across this link ...
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0answers
14 views

RaspberryPi 3 B+: Error in running two webcams simultaneously

I purchased two webcams (Logitech C310 HD Webcam) to use with RaspberryPi (RPi 3 B+ model). When I run individual cameras, they are running fine but when I tried to run both cameras at the same time ...
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0answers
22 views

Raspberry Pi 3 B+: Many video devices are showing

I attached two webcams to RaspberryPi 3B+ using USB power hub. But when I wrote ls -la /dev/video* in Terminal, output shows many video devices as shown below: crw-rw----+ 1 root video 81, 0 Jun 7 ...
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0answers
38 views

High CPU usage from PyGame with time.sleep

so I'm running a very rudimentary webcam surveillance program with PyGame, that just takes a picture from the webcam, stamps the time and saves it in an endless loop. (and does some simple date ...
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0answers
218 views

Tensorflow object detection script is being killed by system

I'm trying to run an object detection script using Tensorflow. After running the python script it's being killed or freezes. I can see camera's light is being turned on right before the script stops. ...
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0answers
461 views

Stream USB webcam with audio

I have a raspberry pi zero with a Logitech C920 webcam. I am hoping to do a video server (baby monitor) with these. I hope to use the H.264 encoding provided by the C920 and combine it with the audio ...
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0answers
654 views

UV4L & USB Webcam - How to change Resolution, FPS etc?

I've been using UV4L for streaming for quite a while now and think it does a brilliant job, especially with the PiCamera 2 module. I now want to use the program with a USB Webcam as a few days ago I ...
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0answers
142 views

HD video streaming via webcam very choppy

I've tried Cheese and GuvcView, but both are extremely choppy. When I open open GuvcView even if I try and set FPS to 24/sec it only will give me 3 FPS. I am remoting into the RP3 via TeamViewer. ...
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0answers
348 views

Want to find difference between two frames, but get a lot of noise because of the auto changing on exposure, brightness…(not sure) of the webcam

As title, I tried to use Raspberry Pi + logitech webcam to find the difference between two frames, the following is the code that I used: import cv2 #capture from camera at location 0 cap = cv2....
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0answers
367 views

Configuring USB Webcam in Raspberry PI

I'm configuring Logitech C920 USB Webcam in Raspian for using it with a 3rd party application. I get the below error I tried to set exposure control using uvcdynctrl and guvcview as well. I'm able to ...
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0answers
243 views

Suggestions on getting better than 100ms latency streaming video with Raspberry PI 3

I am using a raspberry PI 3 to stream video using UV4l via a usb webcam. I have set the PI 3 as a hotspot that you can connect directly to via wifi (no router used at all). I am getting a video stream ...
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0answers
1k views

v4l2 on RPi not working in avconv stream

I have been trying to run a webcam/audio stream from usb devices on my rpi. I have run the following commands: avconv -f video4linux2 -i /dev/video0 –s 640×360 r 10 –b 350k –f flv rtmp://x....
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0answers
937 views

Stream Logitech C615 using mjpeg-streamer

recently I thought about making a streaming camera with my Pi and a Logitech C615 I had, so I followed a tutorial on MAKE.com, but I haven't been able to get it streaming properly. I'm up to the point ...