![]() ![]() It's easy to start using external cameras in your app. These three attributes can be used to find external cameras with the AVCapture API. Because external cameras can move independently from the iPad, their device position is unspecified. For macOS app developers who are familiar with using external cameras, this deprecates the external unknown device type. External cameras provide video media data just like built-in cameras do. There are three main attributes of an AVCaptureDevice: Its media type, device type, and position. And you can find them with existing API from AVCaptureDevice and AVCaptureDeviceDiscoverySession. Each external camera is represented by an AVCaptureDevice instance. If your app already uses built-in cameras, you can make simple updates to start using external ones. New in iPadOS 17, your app can access external cameras with AVCapture. If you're new to AVCapture, I invite you to learn more at the Capture Setup start page on. These classes are available on iOS, macOS, and tvOS. For live camera preview, there's a special type of output, the AVCaptureVideoPreviewLayer, which is a subclass of CALayer.ĭata flows from the capture inputs to compatible outputs through AVCaptureConnections. Data outputs, such as the VideoDataOutput or AudioDataOutput, deliver video or audio buffers from the camera or mic to your app.Īnd there are other kinds of data outputs, such as Metadata and Depth. The PhotoOutput captures high-quality stills and Live Photos. The MovieFileOutput records QuickTime movies. ![]() The AVCaptureSession is the central control object of the AVCapture graph.ĪVCaptureOutputs render data from inputs in various ways. Then they are wrapped in AVCaptureDeviceInputs, which allow them to be plugged into an AVCaptureSession. First, an app uses AVCaptureDevices, which represent cameras and microphones. Let's review how an app can use the camera. The AVFoundation framework allows your app to use built-in and external cameras, specifically, with its AVCapture-prefixed classes. iPad apps use the camera for many features, like taking photos, recording movies, or sending camera frames over the network for video calls. First up, I'll discuss how your iPad app can start using external cameras. And lastly, I'll discuss best practices for your app. Then I'll cover how your app can use microphones that are included with external cameras. ![]() Next, I'll circle back and demystify video rotation. I'll show how your app can use them by starting with discovery and usage. External camera support is a great enhancement to iPad's rich media ecosystem. iPadOS allows your app to use devices like these. Some manufacturers make non-camera devices that conform to the UVC spec, like HDMI switchers that change between multiple inputs to output a single video stream. Some external cameras have built-in microphones, which are also available to your app. And there are many popular cameras your app can use. It defines a standard for USB devices to support video streaming. Your app can use devices that conform to the USB Video Class, or UVC, specification. IPads with USB-C connectors support external cameras. They also support other system camera features, like the Portrait Blur and Studio Light video effects available from Control Center. Your iPad app can use external cameras and webcams to take photos and record movies. If the USB camera is connected to the monitor, then when the monitor is plugged into the iPad, the camera will also be available to your app. When using monitors that don't have built-in cameras, like the Apple Pro Display XDR, people often place a USB camera on top of it. I can also use Center Stage with it, which helps keep me in the frame as I move around.įaceTime, Code Scanner, and WebKit use external cameras, and they are great examples of what your app can do. This is great because now the people on the other side of the call have a better viewing angle of me when I run the app on this big Apple Studio Display. On this iPad Pro, FaceTime is open, and it's using the camera in the display that it's connected to. And with iPadOS 17, your app can start using external cameras such as the one in the Apple Studio Display. Stage Manager's powerful set of features include the ability to extend your iPad's display across multiple screens. ♪ ♪ Nikolas: Hello and welcome to "Support external cameras in your iPadOS app." I'm Nikolas Gelo from the Camera Software team, and this session about how your iPad app can start using external cameras.
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