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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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How to force Qt GUI widget update immediately on android?

I am working on a project using opencv to do some image processing on the video stream from android usb camera.Since I am not so good at java, I decided to use Qt on android with opencv-android-sdk. I get my video stream on android using libuvc…
Andy Matos
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What's the procedure to stream a libuvc code in a gtk window?

Im currently working on linux. Im given a task to code in C using libuvc to stream a video from a USB camera to the window using GTK. I'm getting the out from the uvc_frame_t but I have a problem in streaming it in gtk window. Can someone help?
Madhu Soodhan
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How to close the Ubuntu window opened by pyqtgraph .image

I display a camera snapshot image in a pyqtgraph window, but I can't figure out or find out how to close the window. When I use .close(), the window goes white, but it doesn't close. Below, I use "pg.image( ) which opens an Ubuntu window that shows…
Doug Null
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Determining correct frame format in libuvc

I'm trying to connect to a UVC compatible camera on OS X. Using the hello world example from libuvc, my camera outputs this: DEVICE CONFIGURATION (2560:c114/39254404) --- Status: idle VideoControl: bcdUVC: 0x0100 VideoStreaming(1): …
Josh
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video capture card (webcam like) with OpenCV

I want to use video capture card to capture my screen display, and process the image by OpenCV/C++. I have heard that there's some video capture card which is webcam like.(i.e. I can get the screen display by VideoCapture in OpenCV.) Can someone…
Halley Wang
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No sound from usb device in android

I have connected a usb device(uvc) to my android device. when the usb device is connected the file dev/video0 gets created and iam able to display the video by reading the dev/video0 file . now iam trying to read the audio data , two files…
user2949215
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USB WebCam not detected in Android devices

I Created an UVC based application to connect USB External webcam [Logitech c170] with android device. I Follow the coding from this link. After building the project did Native NDK Build operations and copied the libs folder in to my directory. The…
sudharsan chandrasekaran
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usb: why my f_uvc doesn't answer GET_DEF request?

I need to implement uvc1.5 spec in my device, I choose linux3.4 as my kernel, and I want to use the drivers/usb/gadget/webcam.c as my function driver. But it doesn't function properly. According to the signals captured by wireshark, when the…
Braveheart
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Can I disable android defualt camera (rear and front) while using a developing app using android studio

I want to develop a video call app and the requirement is, there is a usb camera and i should connect it when i make a video call. then it should take video from usb camera . i found a uvc camera library for take camera view from usb camera and…
chanaka_ayesh
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Does windows have a limit on the number of UVC extension unit commands

everyone. Recently, I was developing a method to access the camera extension unit through windows and send commands through the interface "ksproperty". There was a problem. Commands 0x01-0x19 can be sent normally, but commands 0x20 and above failed,…
gavan
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how to translate USB Video Class (UVC) into raw USB device data?

Our video bridge device inputs raw non-video data from our FPGA and then outputs it as Video Class (UVC). How can our host software read the same raw data back out of the received UVC stream? Host is C# .NET app on Windows 10. Video bridge device is…
Doug Null
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How to write(send) command to USB Port?(UVC, Webcam)

I am new in c# I am trying to send command to USB port(usbport=========fx3(Cypress chip), to light on LED than with in the custom board)) I tried to scanport but it was failed because my computer(win10) recognized the usb as camera(fx3 is chip that…
김진섭
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No data received form USB device

I'm implementing USB web cam on top of Atmega32U4. I think I managed to implement transactions on the control endpoint, more or less correctly, as all the descriptors are transited and device reports correctly in the system. Issue is when I'm trying…
majkrzak
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VGA capture card for linux

I am looking for a "VGA capture card for linux", that captures VGA input from remote computer in such a way that I may be able to use V4L2 to capture the feed. Kindly suggest some.
vsk
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