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Questions tagged [uvc]

UVC is a short for USB Video device Class (also USB video class) and it is a USB device class that describes devices capable of streaming video like webcams, digital camcorders, transcoders, analog video converters and still-image cameras.

UVC is a short for USB Video device Class (also USB video class) and it is a USB device class that describes devices capable of streaming video like webcams, digital camcorders, transcoders, analog video converters and still-image cameras.

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MS Media Foundation Session default presenter - video aspect ratio is wrong

Learning (painfully) how to use the Topology and Session to present a captured video. Nothing fancy - just select a web cam, list its modes, choose a video format and hit "go". In general these are the steps I'm taking to present the video…
YePhIcK
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Implementing the board to act as a UVC device

all, I wanted to do a capture and encoding of camera modules, and made in the form uvc device, now I have a development board can capture and encoding, If I implementing the board to act as a UVC device, when used otg or usb connection the…
Lyric
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Android recording video from external camera - Samsung Galaxy S5 - Logitech C920

I am trying to record video on my S5, by plugging an external camera. When I start recording it starts, but when I stop the recording it crashes. I am unable to understand why the Audio Flinger dies. I have the necessary permissions set for record,…
babun
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Changing Android Camera IDs with USB Device?

I have developed an app that displays a UVC camera connected via USB to the device using a combination of libusb and libuvc in a JNI manner. What I want to do is figure out a way of running a service on boot-up that will assign this USB camera the…
Quon Techaholic
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Beaglebone Black Video Capture: Error "select timeout"

Hey I'm following Derek Molloy's tutorial: http://derekmolloy.ie/beaglebone/beaglebone-video-capture-and-image-processing-on-embedded-linux-using-opencv/#comment-30209 Using a Logitech c310 webcam, that is supported by the Linux UVC…
Alex Elkman
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ROS libuvc_camera package on Rasp Pi - No such devices

I recently tried to run noetic libuvc_camera package on a raspberry pi 3B+ hardware. The camera is tested okay with app like cheese and it is therefore listed as /dev/video0. Based the wiki page, I need find the vendor id, product id and serial to…
Yzeng
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Issues with v4l buffer cleaning

I've been trying to write a c program to capture photos from a uvc camera using v4l. I've managed to gt it to work for the most part but every second time i run the program i get a zero-filled yuv buffer which results in a "blank" green image. I…
Hristos
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How to properly configure UAC in ARM Linux systems？

The linux kernel version 4.9.37 adds the necessary UVC and UAC components, as well as the USB sound card component. A shell script was executed to configure the device information, and then the ko driver provided by the ARM device was executed. The…
Ken.Zhang
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Android Driver for Lepton Thermal Camera

I am trying to connect flir lepton camera to an android device using usb, does this require the driver? The official website only has the software on linux, windows and macOS.
juice77ooO
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How to get UVC Extension Unit (XU) in Android?

I'm trying to find a way to control the UVC extension unit for a USB camera app on Android. I'm currently attempting to use the android.hardware.usb API to access the UVC XU, but I'm unsure if this is possible. After reading the UVC 1.5 Class…
YuanPeir
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How can I get UVC Webcam's Snap button is clicked from opencv in python

For our requirements, we need to capture image from usb UVC camera (webcam) when the snap button is clicked on hardware. But we dont know how to get that event. cap = cv2.VideoCapture(0) cap.set(cv2.CAP_PROP_BRIGHTNESS,…
smoothumut
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UVC Extension Units with Windows.Media/C#

We have an application that uses Windows.Media in a .NET Maui application to access a UVC/USB webcam. All of the standard functionality works well. The camera we have uses a couple of UVC Extension Units to set functionality that is non-standard.…
user3423101
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How can I access UVC-Camera from USB (set/get -commands) while it is "videoinput" device for ReactCam in Windows environment?

I have several UVC-Cameras. When I plug them in they appear as "videoinout" into device manager and I can see them thru browser when I try to access them via navigator: // Just driven straight inside empty browsers…
Jani Kokkala
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Camera preview stuck

I'm using the AndroidUSBCamera for connecting with a UVC camera over USB and for some reason the camera preview get freezes sometimes it releases and sometimes it freezes into I restart the app. I think this happened because the buffer is getting…
IdH
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Camera (UVC) brightness setting keeps changing

I am using UVC OV9281 for my opencv project, and I am having issues with setting camera luminance when trying to capture my phone screen using the camera. I am using this bash command to lock the camera settings BRIGHTNESS=10 19 CONTRAST=50 20…
royce.lee
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