I am currently trying to run 2 webcams on a Wandboard board, which have to share a USB hub. Problem is , the current driver implementation (YUV only) saturates the USB hub and in the end I can only...

New to V4L, I decided to start using the video4linux2 library in order to capture a frame from my camera in C (I am using the uvcvideo module with a Ricoh Co. camera). I followed several guides and...

How to properly query all video devices in system using libavdevice? opening input with int err = avformat_open_input(&context, NULL, fmt, NULL); fails because device name is not provided (seco...

I am trying to use v4l2_buffer's timestamp value (type timeval) to synchronize images captured from a UVC webcam to external events. However the timestamp is not the same as the system time, or th...

I've been working on using v4l2 directly to grab a camera image in OpenCV. This is working very nice; this way I can grab an image in YUYV format and with a high resolution (understanding that the ...

In normal shutter lag,sensor driver give the caputured image buffer to v4l2 layer and here jpeg(hardware) header adds some extra data(exif info and thumbnail) and this layer give the image buffer t...

Does Android Linux Kernel support V4L or V4L2 (Video for Linux). If not, is it possible to add it?

I'm looking for a simple example for camera access in Linux using V4L2. Where I can find it? As simple, as possible. Thanks,

I have written an application which reads from a webcam and processes the frames using OpenCV on linux. Now I want to pipe the output of my application to a virtual webcam that has been created by ...

I couldn't find any mention of the thread safety characteristics of V4L2, except for this e-mail from 2008. It talks about the big kernel lock, which I guess is gone now, right? Does anybody have ...

I have a Linux application that processes camera images. Currently I provide buffers to the v4l2 kernel subsystem that are filled with image data. However I need to know, as exact as possible, whe...

I might have some misconceptions here, so bear with me. I wrote a program that captures images from a camera. I am sharing the memory between the camera and my application with mmap as I found in...