C#VideoCaptureDevice
时间: 2024-04-25 22:22:36 浏览: 11
C知道: C# VideoCaptureDevice 是一个用于从摄像头和其他视频捕获设备中视频数据的类。它是在 AForge.NET 框架中提供的。你可以使用它来访问摄像头并捕获视频流,然后进行处理或保存。你还可以设置视频的分辨率、帧率、亮度等参数。这个类提供了一些方法和事件来管理视频捕获设备。你可以在 C# 中使用 VideoCaptureDevice 类来实现视频捕获功能。如果你有具体的问题或需要更多的信息,请告诉我。
相关问题
C# 如何解除VideoCaptureDevice摄像头的应用
可以通过以下步骤来解除 VideoCaptureDevice 摄像头的应用:
1. 停止视频捕获:
```csharp
videoCaptureDevice.Stop();
```
2. 释放资源:
```csharp
videoCaptureDevice.Dispose();
```
3. 如果需要,将摄像头从应用程序中删除:
```csharp
videoDevices.Remove(videoCaptureDevice);
```
完整代码示例:
```csharp
using AForge.Video.DirectShow;
// 获取所有可用的摄像头设备列表
FilterInfoCollection videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
// 实例化 VideoCaptureDevice 对象
VideoCaptureDevice videoCaptureDevice = new VideoCaptureDevice(videoDevices[0].MonikerString);
// 停止视频捕获
videoCaptureDevice.Stop();
// 释放资源
videoCaptureDevice.Dispose();
// 如果需要,将摄像头从应用程序中删除
videoDevices.Remove(videoCaptureDevice);
```
videoCaptureDevice.VideoCapabilities.FirstOrDefault(c => c.FrameSize.Width == 640 && c.FrameSize.Height == 480);
&& c.FrameSize.Height == 480);
This code snippet is written in C# and is used to find the first video capability of a video capture device that has a frame size of 640x480.
The videoCaptureDevice is an instance of the VideoCaptureDevice class, which is used to capture video from a camera or other video input source.
The VideoCapabilities property of the videoCaptureDevice object returns a collection of all the video capabilities supported by the device.
The FirstOrDefault method is used to find the first video capability that matches the specified criteria. In this case, the criteria are that the FrameSize property of the video capability must have a Width of 640 and a Height of 480.
If a video capability with those dimensions is found, it will be returned by the method. If not, the method will return null.