Questions tagged [webcam]

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

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1answer
635 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
152 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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2answers
4k views

Raspberry Pi 3 with Windows 10 IOT using USB Webcam

I just got this new Raspberry Pi 3 and I have installed Windows 10 IOT on it. I am doing this project and it is for a webcam detecting objects. So my question is, can I use a USB webcam on my ...
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3answers
5k views

Raspberry Pi live stream through webcam to android phone

I am trying to broadcast video from web cam connect with Raspberry Pi to Android app, for that I used 'motion', by this it can stream video over local network only, using http://RPi_addr:port but now ...
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1answer
613 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
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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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 ...
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0answers
162 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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0answers
20 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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0answers
38 views

VLC cannot read mjpeg video produced over USB webcam

I'm trying to use vlc to transcode a mjpeg stream from a USB camera connected to a raspberry pi 3B+, however VLC seems unable to read the mjpeg video stream from the camera, I already checked the v4l2-...
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0answers
255 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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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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1answer
48 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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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
7k 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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1answer
304 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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0answers
34 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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2answers
5k views

Presenting HTTP service securely with HTTPS

I've successfully configured a Motion webcam server for monitoring my puppy as he destroys the kitchen: The video is presented within an HTML page with allows for basic HTTP authentication, but is ...
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0answers
27 views

video flickering while streaming with uvc-gadget and g_webcam on raspberry pi 3b+

I am using raspberry pi zero w emulated as a webcam using uvc-gadget. It works plug and play on Nvidia-jetson-nano, or any other pc or laptop. But I see too many choppy frames when I use it with my ...
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0answers
12 views

Permission Problems with Motion

I'm new to the field and wanted to use Motion to turn my webcam into a surveillance camera. But I can't start Motion. I always get this error message and I don't know what to do. I'm grateful for any ...
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1answer
72 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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0answers
12 views

C920 cannot register after removing uv4l

I have a pi 3b+ running Raspbian stretch. c920 had been working out of box with the official v4l2 driver. I install UV4L to play with the webrtc features. But found some problems. So I did an apt ...
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1answer
319 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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2answers
5k views

Webcam input / display using gstreamer

I have connected Logitech C170 webcam to one of the USB port of raspi and I can confirm it is working using the motion utility. I have also installed gstreamer (sudo apt-get install -y gstreamer1.0-...
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2answers
86 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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8answers
190k views

How can I stream H.264 video from the Raspberry Pi camera module via a web server?

So I got the Raspberry Camera today and got stills working fine. Capture an image in JPEG format: raspistill -o image.jpg Capture a 5-second video in H.264 format: raspivid -o video.h264 I do not ...
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1answer
123 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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0answers
30 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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1answer
420 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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0answers
223 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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2answers
7k views

Protect my motion webcam stream with a password (motion.conf)

I set up a webcam server using motion. The video is correctly streamed to Internet. Now I would like to protect the stream with a password: I don't want unknown people to spy on me! I don't know how ...
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1answer
167 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
27k views

“Failed to open video device /dev/video0 no such file or directory” with normal working usb camera in motion

I have a normal usb 2.0 cam. Connecting it to my pc, it works perfectly. It is not working with my raspberry pi (2). I had installed motion and it had worked good before 2/3 weeks when I tried it but ...
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0answers
119 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
27 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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2answers
8k views

What do I need to do to stream two USB webcams with my Raspberry Pi B+?

I have done streaming with a single webcam using Motion, but my project needs streaming for two USB webcams. Any kind of help will be appreciated.
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2answers
12k views

Why is my Webcam image all black?

When I use fswebcam to capture a JPEG image from my webcam (an HP 2100) that is USB attached, it is always black?
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0answers
33 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
1k views

Is a home surveillance system possible using the RasPi?

I've been searching a while trying to find a way to have a Home Surveillance system using the RasPi, but unable to find a solution that includes all of the following. Would someone know of a solution ...
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1answer
1k views

How to stream video with RPi 3 and a common webcam?

I have a RPi 3 with the latest Raspbian and a simple webcam. I would like to stream the video through it using Pi IP. I tried to follow this tutorial: http://pimylifeup.com/raspberry-pi-webcam-server/ ...
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1answer
1k 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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0answers
49 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
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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1answer
163 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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0answers
250 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
723 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
244 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 ...
1
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1answer
35 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 ...
2
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3answers
2k 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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2answers
1k views

Google Hangouts

I have 2 questions here. One, can I use a USB web cam for something like Google Hangouts. Two, can I install the Google hangouts plug-in on Raspbian.