Raspberry Pi

Questions tagged [webcam]

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

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Distribute video feed from Pi to multiple network clients

I want to set up a webcam for a fish tank on the LAN at my office. I set up a Raspberry Pi model 3B with a camera and used https://github.com/jacksonliam/mjpg-streamer to stream it locally. It works ...
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17 views

Green frames when capturing webcam

We use RPI4 for automation. One of our use-cases is to capture image frames via webcam/HDMI grabber as fast as possible and do some analytics. We use python and opencv for capturing, but it's not ...
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1answer
24 views

Webcam install makes Pi unbootable

I just tried to install an old USB webcam on my Pi 3B and apart from not working, it has stopped the Pi booting (even with webcam removed). The Pi attempts to boot but fails and does a register dump ...
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24 views

Raspberry pi 4 with two webcams

I am trying to run two webcams on raspberry pi 4 with raspbian OS. It works rarely with very low FPS. Most of the time i am getting this error: [ WARN:0] global /tmp/pip-wheel-qd18ncao/opencv-python/...
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28 views

Issues with usb cams initialising after boot RPi 4

I have a Raspberry Pi 4 Model B Rev 1.2, running Raspberry Pi OS Lite. I want to stream a usb webcam with vlc, which worked nicely/still works nicely on my 3b+. With the Pi 4 I am encountering a ...
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52 views

Logitech C920 webcam mic volume very low in some apps

I've connected a Logitech C920 webcam to my Raspberry Pi 4 with the basic OS image on it. I want to use it for video conferencing through my living room TV, and I intended to use the built in C920 mic ...
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34 views

Raspberry 3B+ freezes when using two webcams

I attached 2 webcams and capture images once in few minutes using fswebcam. No problems. (Some generic 2K webcam and a Microsoft LifeCam HD 3000) However, the RaPi froze "in production" ...
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100 views

raspivid equivalent for USB camera

I'm using a Raspberry Pi Camera Module in my project. I have Java code that creates a new process that starts raspivid and have it output the video feed to stdout. Java then reads that and processes ...
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62 views

Record from USB webcam

I need some help reading video from a USB webcam. I'm writing a Java application that streams video too authenticated users. This is working fine with the Pi camera as raspivid is able to output an h....
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21 views

How can I solve the green screen problem at uv4l uvc cam?

I try to connect UV4L streaming server for webRTC and I connected command by we use USB cam logitech and when i open UV4L using driver uvc uv4l --auto-video_nr --driver uvc --device 0c33:6344 this is ...
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52 views

2 out of 6 USB webcams appearing when using lsusb

I might have read every possible post regarding this topic, but I have never found a clear answer. I face the following scenario: I have a remote Raspberry Pi 4 connected to an actively powered USB ...
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1answer
139 views

USB camera not identified

I have a laptop camera wired to a USB cable. This camera works properly on my Ubuntu laptop. However, it does not on the pi. I have a Raspberry PI 4 (4GB) with Raspbian OS lite installed. I installed ...
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47 views

How to use Raspberry Pi to encode video from an IP camera to stream to Azure?

Related to this question https://stackoverflow.com/questions/33530521/storing-live-video-on-azure-media-services Since WireCast is only for windows what is the alternative I could use to create an ...
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2answers
63 views

How can I remotely access the command line on my Raspberry Pi without Wifi?

For a project I'm doing with a Raspberry Pi Zero, I need to access raspi-config, compile some software, and do funky stuff with systemctl. With my other projects, I've always either SSHed into the Pi ...
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39 views

Cannot get video from usb webcam through avconv on raspbian

I can't seem to get avconv/ffmpeg to read from my webcam on my raspberry pi 3 and I can't seem to find anything that will fix the situation, all the posts that I've seen have just been resolved with a ...
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138 views

USB Webcam not working with browser

I am attempting to use a USB webcam with a web browser. Specifically, the webcam is a Logitech HD Webcam C615 (which is listed as compatible at https://elinux.org/RPi_USB_Webcams), and either ...
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1answer
1k views

Pi4B how to rtp UDP stream video with webcam and Gstreamer

I have a fresh installed Buster(Release Date: 2020-08-20) on my Pi4B I am able to stream with pi Camera by doing gst-launch-1.0 -v v4l2src device=/dev/video0 ! video/x-raw,width=1280,height=720,...
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Using Android Phone as Webcam via USB to use Zoom or Google Meet [duplicate]

People have been asking for help to be able to purchase a tablet or a computer that they can use for online classes. Most people here in the Philippines don't have the means to buy any of it. However, ...
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Connecting Raspberry PI with Pi Camera to my computer via USB

There are many tutorials about setting up a RasPI with camera as an IP camera and then using software on the PC that takes the IP stream and looks like a webcam such that Zoom or whatever can use the ...
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246 views

USB webcam (spherical camera) not working with Raspberry Pi OS

I'm feeling utterly hopeless with this one, but my USB spherical camera, Insta360 Air, no longer works with Raspberry Pi. It used to work in a previous OS (forgot the kernel version but before the OS ...
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298 views

Stream from USB webcam to rpi3+ hdmi screen

I'm looking for something I think should be simple, but haven't been able to find any resource that shows how to do it. I have a USB webcam attached to my PI 3+. I also have a monitor attached to the ...
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1answer
71 views

Two USB cameras and ASP.NET Core

I want to build a project based on Raspberry Pi 4B and I would like to hear opinion someone's more experienced with this platform (as I am mostly SW and did some projects with Arduinos) if it is ...
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1answer
23 views

Outputting RPi video into a laptop

I've been researching on how to get my RPi video output to show up on my laptop. Space requirements dictates that using an external monitor is extremely cumbersome, and since I'm not using my home ...
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46 views

I want to use a Rasberry Pi as a USB A/V device to a windows computer

Some background might help further this discussion. We have multiple classrooms that have a variety of USB cameras and microphones installed in them. I want to use a Raspberry Pi to help manage ...
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107 views

Can't stream video

I have a Pi 3 model B Rev 1.2 and I would like to use it as a surveillance camera server. There seems to be no stream at all. I don't know if the cam isn't working (it works on my ubuntu workstation) ...
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1k views

USB Webcam Problem

My webcam is not working properly, i have even put it on a powered hub. I have a new raspberry pi 4 fswebcam -d /dev/video0 image.jpg --- Opening /dev/video0... Trying source module v4l2... /dev/...
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python (2/3) functions to use a USB-camera? [closed]

After many attempts using pygame, or OpenCV to capture and display pictures from a standard USB-camera I decided to ask this question. Mplayer worked with all cameras I have tested (a=Logitech, b=...
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5answers
2k views

RaspberryPi 3 B+: RPi restart whenever I tried to run two webcams simultaneously

I have a very strange problem with my RPi. Whenever I tried to run two webcams simultaneously, RPi restarts itself. A few months back I can run two webcams simultaneously without such a problem (same ...
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39 views

Recording two simultaneous video feeds from webcams on Raspberry Pi 4?

I am wanting to have a Raspberry Pi 4 connected to two USB webcams recording at 720P with 30FPS. Is this computationally possible with the specs of the Pi? I am a little concerned about the data ...
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28 views

Is Raspberry Pi Using the Same Coding and Encoding in Live Video Streaming as in Ubuntu and on other Machines?

Recently, I have been tagged to work with the Raspberry Pi 4, and with the action camera that I have plugged to work with it as a webcam. However, the Live Video that is streamed through Raspberry Pi ...
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1answer
443 views

Raspberry Pi4 error capturing image with OpenCV, image comes half green

I am using a common logitech webcam with OpenCV. When I was using my RPI3 I had no trouble, but I wanted to improve my system so I bought a RPI4. Upon setting up my system with RPI4 using raspian ...
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37 views

Stream Webcam to Windows pc

Does anyone know how I can stream the webcam from my raspberrypi to my windows pc via wifi? Ive tried gstreamer but this just doesnt work for me and ive read the performance is really bad. there ...
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1answer
464 views

Flask app takes 60% CPU on Raspberry Pi Zero W

I am developing Flask rover app on Raspberry Pi Zero W. And I having problems with CPU perfomance. I used flask profiller to find weak spot in my app, but everything seemed normal. I have Raspberry ...
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1answer
994 views

imutils VideoStream(src=0) return VIDIOC_QBUF: Invalid argument in raspberry pi

I am only doing a simple code in my Raspberry Pi 4: from imutils.video import VideoStream # initialize the video streams and allow them to warmup print("[INFO] starting cameras...") webcam = ...
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112 views

Webcam FPS Very Low

I just plugged in a Microsoft Lifecam Studio webcam into my Raspberry Pi 4 Model B. I used gucview to test it out along with Google Hangouts for video conferencing (in Chromium) but the FPS was ...
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163 views

Assign multiple webcams to fixed /dev/video* at boot

I'm currently working on a project that requires taking pictures with 3 USB webcams but whenever I boot the raspberry, it assigns randomly a /dev/video "address" to each one of them. I'm not using ...
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2k views

VLC stream RTSP USB webcam

I'm trying to stream a usb camera using VLC. I used this page to get it working on a pi zero with a raspberry pi camera attached to it. On a second RPI 3B+ I'd like to do the same only with a USB ...
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130 views

I don't know why suddenly mjpg-streamer and webcam stop working

I have made a program that uses three webcams and three ultrasonic sensors using raspberry pi 3 and python 3. When each ultrasonic sensors detect stuff in front of them, webcam take a picture of it. ...
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1answer
290 views

Allow more power for USB Devices?

Is there a way to allow more power to USB Devices powered by the Pi I have a model B+, and I am unable to power my Webcam plugged into the Pi it has a single USB Connection so there's no way to power ...
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128 views

USB Inspection camera

I have a USB Inspection camera, identified as "Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) 300k Pixel Camera" This is mounted at /dev/video0 and I can capture stills using ...
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2k views

Single webcam using /dev/video0 and /dev/video1

With just one webcam attached, I get two devices: /dev/video0 and /dev/video1 They appear to have identical attributes. It's random which one gets bound to which entry, and only 1 of them actually ...
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311 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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2k 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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494 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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688 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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152 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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40 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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2answers
665 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
5k 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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1answer
3k 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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