Questions tagged [webcam]
A webcam is a device that records video and then uploads that video to a computer.
212
questions
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12 views
Why No /dev/v4l/by-id?
I want to refer to a USB camera by ID in an fswebcam configuration file.
/dev/v4l/by-id should look like this:
pi@raspsky:~ $ ls -a /dev/v4l/by-id
. usb-HD_Camera_Manufacturer_USB_2.0_Camera-video-...
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0answers
19 views
Using USB webcam with integrated audio at the same time
I am trying to use a usb webcam for video and microphone at the same time on my raspberry pi4, on buster. I just set the system up from scratch and am ready to do that again, if it helps with trouble ...
0
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1answer
20 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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0answers
42 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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0answers
134 views
Using Raspivid and Gstreamer to stream camera video over the network to VLC player
I am trying to stream video from my raspberry pi camera over my LAN to a a windows machine running VLC. I have been able to do it successfully using "raspivid" in conjunction with "clvc" to stream ...
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0answers
73 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) ...
0
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0answers
308 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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0answers
40 views
Trigger camera once in an infinite loop
I'm building the following script to be used with a RPi 4, with a USB Webcam and a TFMini Plus Lidar sensor (also USB plugged):
import time as t
import serial
import datetime
import cv2,io,imutils
...
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0answers
56 views
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=...
7
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5answers
1k 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 ...
1
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0answers
30 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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0answers
25 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 ...
2
votes
1answer
201 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 ...
1
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0answers
29 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 ...
1
vote
1answer
166 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 ...
1
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1answer
452 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 = ...
1
vote
0answers
63 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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0answers
127 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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0answers
686 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 ...
1
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0answers
66 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
371 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-...
1
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1answer
64 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 ...
1
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0answers
77 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 ...
0
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0answers
100 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
916 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 ...
0
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0answers
16 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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0answers
209 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
789 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 ...
3
votes
0answers
311 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 ...
1
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0answers
511 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
71 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,...
1
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0answers
37 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 ...
1
vote
2answers
409 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 ...
2
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1answer
2k 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 ...
1
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1answer
943 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
1k 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
470 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
38 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 ...
1
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0answers
818 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
747 views
Raspberry Pi Zero as webcam [duplicate]
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.
...
1
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1answer
446 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 ...
1
vote
1answer
751 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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0answers
2k 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 ...
1
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1answer
2k 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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0answers
1k 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 ...
0
votes
1answer
884 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 ...
0
votes
1answer
97 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 ...
0
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1answer
338 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 ...
0
votes
1answer
243 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 ...
0
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0answers
164 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. ...
