Questions tagged [fswebcam]

For questions on the usage of fswebcam, a lightweight webcam app

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votes
1answer
57 views

USB Camera vs Pi Camera

I'm using USB camera for object detection. I can't find code for them because the common blogs or articles are about object detection using pi camera only. Is object detection possible with a USB ...
2
votes
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 ...
1
vote
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,...
2
votes
0answers
54 views

fswebcam /boot/cmdline.txt interaction

Occasionally fswebcam -r 640x480 -S10 image.jpg would produce an Error selecting input 0 VIDIOC_S_INPUT: Device or resource busy error on my RPi 3. I googled around a bit. I got some hits suggesting ...
0
votes
0answers
37 views

Shell script with loop, camera and fbi

I want to write a shell script which regularly / continuously captures images from a webcamera (via fswebcam) e.g. every second and show it then on the screen using fbi. In this way I want to have a ...
2
votes
2answers
969 views

Raspberry pi camera not showing up on a raspberry pi zero

I have a Raspberry Pi Zero with the latest Raspbian operating system (2018-04-18-raspbian-stretch-lite.img). Attached I have a raspberry pi camera that is not working as it is supposed to be. My setup ...
0
votes
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 ...
0
votes
2answers
1k views

fswebcam - every other attempt results in device busy

I am using fswebcam on a debian image on a rpi3 with a logitech webcam. Fswebcam works great... when it works. I've plugged in a powered USB to make sure it was not a power issue of some sort, but ...
1
vote
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 ...
3
votes
1answer
888 views

Capture image from webcam without skipping frames everytime?

To capture an image that is not all black or saturated, I am currently using: fswebcam -S 30 image.jpg My application is a little delay sensitive and skipping around 30 frames every time to get a ...
1
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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()
0
votes
1answer
2k views

fswebcam: Unable to find a compatible palette format

I am unable to use my webcam. Running fswebcam out.png, I get the error: Unable to find a compatible palette format. What would be the origin of the error and how to fix it? It can be a missing ...
1
vote
0answers
544 views

fswebcam not working

When I try to use fswebcam by running fswebcam --save test.jpg, it works once every time I reboot my raspberry pi. Then it gets to "Capturing frame" before giving an error that says spca561_decode() ...
4
votes
1answer
1k views

USB webcam can't take a picture

I would like to ask a question about USB webcam taking picture, and I have surveyed similar topic, but still not found answer. I am using an RPi 2 B with rasbian Jessie, I have taken a picture with ...
4
votes
2answers
2k views

How to capture images from 2 webcams parallely using raspberry pi?

I am working on the following code: import os os.system("sudo fswebcam -d /dev/video0 -r 1280x960 image.jpg") os.system("sudo fswebcam -d /dev/video1 -r 1280x960 image2.jpg") in above code, the ...
1
vote
2answers
439 views

--banner-colour not working on fswebcam

When I run sudo fswebcam --png 9 -r 640x480 /var/www/image.jpg on my raspberry pi, it works fine. If I add --banner-colour #ff0000 to it, like this: sudo fswebcam --banner-colour #ff0000 --png 9 -r ...
6
votes
6answers
22k views

fswebcam not displaying images properly

Some of the images I get from the Webcam using fswebcam are not displaying properly. Comparison: I got these images using the following command: sudo fswebcam -r 640x480 test.jpg I'm having the ...