# UVC

The DepthAI UVC ([USB Video Class](https://en.wikipedia.org/wiki/USB_video_device_class)) node allows OAK devices to function as
standard webcams. This feature is particularly useful for integrating OAK devices into applications that require video input, such
as video conferencing tools or custom video processing applications.

## What is UVC?

UVC refers to the USB Video Class standard, which is a USB device class that describes devices capable of streaming video. This
standard allows video devices to interface with computers and other devices without needing specific drivers, making them
immediately compatible with a wide range of systems and software.

## How Does the UVC Node Work?

The UVC node in DepthAI leverages this standard to stream video from OAK devices. When the UVC node is enabled, the OAK device is
recognized as a standard webcam by the host system. This allows the device to be used in any application that supports webcam
input, such as Zoom, Skype, or custom video processing software.

The UVC node streams video data over a USB connection. It is important to use a USB3 cable for this purpose, as USB2 may not
provide the necessary bandwidth for stable video streaming.

> The UVC node can currently handle NV12 video streams from OAK devices. For streams in other formats, conversion to NV12 is
necessary, which can be achieved using the
> [ImageManip](https://docs.luxonis.com/software/depthai-components/nodes/image_manip.md)
> node. It's important to note that streams incompatible with NV12 conversion, like depth streams, are not supported by the UVC
node.

## Examples of UVC Node Usage

Custom Python Script: A custom Python script can be written to enable the UVC node and configure the video stream parameters. Here
are some pre-written examples:

 * [UVC & Color Camera](https://docs.luxonis.com/software/depthai/examples/uvc_rgb.md)
 * [UVC & Mono Camera](https://docs.luxonis.com/software/depthai/examples/uvc_mono.md)
 * [UVC & Disparity](https://docs.luxonis.com/software/depthai/examples/uvc_disparity.md)

OBS Forwarding: For applications where direct UVC node usage is not possible, OBS Studio can be used to forward the UVC stream.

## Reference

### depthai.node.UVC(depthai.Node)

Kind: Class

UVC (USB Video Class) node

#### setGpiosOnInit(self, list: collections.abc.Mapping [ typing.SupportsInt , typing.SupportsInt ])

Kind: Method

Set GPIO list <gpio_number, value> for GPIOs to set (on/off) at init

#### setGpiosOnStreamOff(self, list: collections.abc.Mapping [ typing.SupportsInt , typing.SupportsInt ])

Kind: Method

Set GPIO list <gpio_number, value> for GPIOs to set when streaming is disabled

#### setGpiosOnStreamOn(self, list: collections.abc.Mapping [ typing.SupportsInt , typing.SupportsInt ])

Kind: Method

Set GPIO list <gpio_number, value> for GPIOs to set when streaming is enabled

#### input

Kind: Property

Input for image frames to be streamed over UVC

Default queue is blocking with size 8

### Need assistance?

Head over to [Discussion Forum](https://discuss.luxonis.com/) for technical support or any other questions you might have.