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Questions tagged [usb-camera]

46 questions
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Gstreamer can't capture video from USB-Camera

I have a HikVision MV-CA050-20UC USB-Camera(USB 3.0). I want to capture video from it on Nvidia Jetson Nano in Ubuntu by using gstreamer. After installing the drivers, /dev/video0 shows up after connecting the camera (it also vanishes once the…
BarzanHayati
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How to convert ueyesrc buffer to opengl texture?

I'm trying to make a UI-3370CP-C-HQ R2 Camera work on a Coral DevBoard with gstreamer. Since the camera is no standard v4l2 camera, I downloaded and compiled the ueyesrc gst plugin (https://github.com/atdgroup/gst-plugin-ueye) on the devboard. In…
rang
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Save camera image to dynamic file name in Node-Red

I have a usb cam that take a picture from a node. But I want every image taken saved in different filename so that I can use all of images saved (not overwritten). So my question is, how to make the file named from a function node that give an…
Rhizudeen
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CameraAccessException: CAMERA_ERROR (3): Error configuring streams: Function not implemented (-38)

I downloaded the repo for CAMERA2: https://github.com/googlearchive/android-Camera2Basic/tree/master but when I run the app and clicks on any of the available cameras, the following error appears android.hardware.camera2.CameraAccessException:…
Sebastian Corradi
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Usb3Vision glass to glass speed

anyone know how to reduce usb3.0 camera glass to glass latency to less than 5ms? I measured about 30-70ms of latency, My setup is a 1.6MP 249FPS global shutter usb3.0 camera connect to a Lenovo PC. I am trying to do real time motion calculation,…
Bbb3012
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Can't connect to USB camera device on a RaspberryPi4 using OpenCV2 if I startup the Pi without the cam attached first

I'm having trouble with an app I'm writing for a monitoring device. I've got a RaspberryPi4 that runs a python script with three threads. One of these threads manages a camera for recording video. When I startup the pi with the camera attached, it…
mal_function
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Cannot receive MJPEG RTP stream via GStreamer. I'm streaming a Full-HD camera to a multicast IP, but cannot properly receive it on a client machine

On my Jetson Nano, I'm running this pipeline: gst-launch-1.0 -vvvvv v4l2src device=/dev/video2 ! image/jpeg,width=1920,height=1080,framerate=30/1 ! rtpjpegpay ! udpsink host=224.1.2.3 port=8556 That results in the following debug…
Stanislav Svědiroh
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Streaming MJPEG using UVC camera from USB camera from ARM using UDP to X86

I am using to use i.Mx6 Dual processor connected with USB Camera(UVC Camera) supporting 1080p 30FPS to Stream to X86 plaftform using UDP port. I want to achieve streaming using 1080p with minimum latency. I want to use MJPEG from i.MX6 to X86…
Kailas Kharse
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How to interpret ffmpeg recording options available for a webcam (directshow)?

I am trying to create a GUI for personal use, that allows someone to customise recording and converting options of ffmpeg, without directly using the command line. At the moment, I am learning about different parameters and flags in…
Jones659
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gstreamer cannot capture color images

I am trying to use 4 camera on rPI 4. Therefore, i use a Gstreamer and i don't know how it do but my camera is always send gray capture. Can Gstreamer change camera's microcontroller? and if yes, how can i fix this issue? thank you gst-launch-1.0…
Hüseyin Kılıç
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How can I implement function for usb camera for my application?

I am creating an application for tablet in android where, I want to use usb camera as a default camera when I start my application. I want to click picture and save them in either jpeg,jpg or png format. I could not find any helpful resources on…
Roshni Patel
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Python Multithreaded camera and visualization fast

Challenge: I want to run three USB cameras 1600x1300@ 60 fps on a jetson Xavier NX using python. Now there are some ways of doing this but my approach has been: Main -> Camera1 Thread -> Memory 1 -> Visualization thread 1. The main starts up three…
Magnus_G
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Cameras randomly disconnect or don't run

I am making a surveillance system and it requires at least 6 cameras. Currently I have connected 4 to my PC by USB. I am using supplementary power for each camera since the USB output of my PC is sometimes not capable of delivering enough…
KCC
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Python opencv open webcam faster

I have a product need to open multiple cameras(about 20) with each camera capturing one single image. However, the time to initiate each camera takes about 3-4 seconds, and having all these time spent in sequence is relatively long. So the question…
Xuanyuan Zhang
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How to get the screen on when usb attached (android 10)

I am working on an app and I am trying to find a way to wake the screen when I plug a usb camera to the phone while screen off on a android phone. I tried to monitor my usb connection but it didn't work, once the screen off, my app can no longer…
user16919465
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