Questions tagged [webcam]

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

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16 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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24 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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42 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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94 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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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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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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1answer
71 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
645 views

how to increase fps for raspberry pi for object detection

I'm having low fps for real-time object detection on my raspberry pi I trained the yolo-darkflow object detection on my own data set using my laptop running windows 10. When I tested the model for ...
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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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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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223 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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466 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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158 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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1answer
33 views

Only allow a specific peripheral to be connected to a USB port

I am turning my raspberry pi prototype device into a market product. The data and the program running on the pi must be protected. But we have a USB webcam attached to it (provided by us, hence we ...
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339 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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1answer
312 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
214 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
550 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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896 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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1answer
950 views

Raspbian Stretch C920 webcam driver LED control regression?

In a previous Stack Overflow post (April 16th 2018), Raspberry Pi : use VLC to stream webcam : Logitech C920 [H264 Video without transcoding + Audio + LED control], I described how to use the Pi + ...
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656 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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1answer
527 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
239 views

Barcode Scanning Raspberry PI

I want be able to scan barcodes using my raspberry pi 3, there are serveral barcode scanner/modules, but these are quite expensive. Would it be a option to use a webcam and use maybe a API which reads ...
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1answer
148 views

Unable to connect access IP webcam

I'm trying to access my phone camera using IP Webcam android app. I'm programming Pi using my laptop via Remote Desktop Connection with a static IP set for Pi. Also I tried to stream webcam from Pi's ...
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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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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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3answers
1k views

I want to webcam stream 24/7 to open Internet

I am a teacher, and we are using a 3-D printer. I have a Raspberry Pi 3 Model B, as well as the Webcam Module Version 2, and I have the camera set up and can see video by typing in localhost:8081 into ...
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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
559 views

Two Webcams Taking Stills

I’m a bit of a novice, needing to do this for a university project. I need to connect two USB webcams to the RPi and get each to take a still image and save it in “%iimg%i” naming notation to identify ...
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2answers
80 views

Virtual Reality with RPi 3

I am working on a project in which I am trying to combine two seperate USB webcamera's to create a pair for virtual 360 degree footage. Can RPi 3 encode this video and send it to a smartphone ...
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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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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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352 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
799 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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1answer
326 views

using an rpi as IP camera with minimal CPU usage?

I'm trying to get a pi happening as an IP camera, using a CSI camera module. I'd like to minimise CPU usage. I don't need motion detection, just to dump an image from the camera onto the network where ...
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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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1answer
362 views

Raspberry Pi as HDMI to USB converter for HD Camcorder

I know this is a long shot, but is it possible to use the HDMI port of the Raspberry Pi as an input from an HD camcorder, and use a USB port as an output for another device (like a laptop) to use as a ...
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1answer
116 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
2k views

Can't access motion cam on my raspberry pi from outside

I have been struggling with this for whole day. I have a Microsoft web cam connected to my raspberry pi 3 with ip of 192.168.0.17, and listening port of 446. Based on the documentation I have the ...
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0answers
244 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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3answers
4k views

Motion: Unable to open device

I can access the web interface but get a grey screen then saying "Unable to open device". I tried: pi@octopi:~ $ ls /dev/video* pi@octopi:~ $ /dev/video0 I can also take pictures with fswebcam so ...
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2answers
2k views

Problem with usb camera

I want to periodically take pictures using a webcam connected on a Raspberry Pi via fswebcam. It happens that it is unstable and some times it just fails, with no apparently reason. Below you will ...
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1answer
6k views

VLC - Unable to open MRL 'v4l2:///dev/video0'

I have been trying to stream live webcam footage from my PS3 eye toy (connected to RPI through USB). I downloaded VLC and ran: vlc 4l2:///dev/video0 But I keep running into the error VLC is ...
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0answers
146 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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1answer
632 views

How to use a webcam that is not officially for the Raspberry Pi?

I was just wondering if I could use a normal webcam that is NOT officialy Raspberry Pi endorsed? I am using a Raspberry Pi 3 Model B
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1answer
751 views

RPi-Cam-Web-Interface - Problem Loading Page when IP Address is entered

I have spent most of the day trying to install RPi-Cam-Web-Interface onto my device with no success. I have followed the instructions here but once the installer has finished (using the defaults) I am ...
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1answer
78 views

Old RC car too new [closed]

I have a old RC car/truck with a good battery. It's starting is 2 dc motors on the back wheels (Skid steering?). Am I able to use a Raspberry Pi, USB web cam and a USB wifi card to make a RC car that ...
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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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1answer
158 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 ...