捕获到了音视频后要保存到本地文件，这是很常见的应用场景,DxPackNet保存视频文件也比较简单
用 IAviStreamWriter avi文件写入流即可
1.初始化相关设备，设定好数据捕获的回调函数
???????DxDeviceCollection cameras; ???????IDxCameraCapture camCapture; ???????IDxMicrophCapture microphone; ???????IAviStreamWriter aviWriter; ???????private void Form1_Load(object sender, EventArgs e) ???????{ ???????????cameras = DxFactory.CreateDxCompent<DxDeviceCollection>(DxDeviceCollection.ENVIRONMENT_CAMERAS); ???????????camCapture = DxFactory.CreateDxCompent<IDxCameraCapture>(this, panel1); ???????????camCapture.FrameCb = camerasFrameCb; ???????????camCapture.Init(cameras[0]); ???????????microphone = DxFactory.CreateDxCompent<IDxMicrophCapture>(100); ???????????microphone.AudioCb = auCaptureBufferCB; ???????}2.创建avi写入流 打开设备
???????private void button1_Click(object sender, EventArgs e) ???????{ ???????????button1.Enabled = false; ???????????//创建avi文件写入流 第一个参数为-写入文件路径 ?第二个参数为-是否支持音频写入,true为音/视频,false为只写视频 ???????????aviWriter = DxFactory.CreateDxCompent<IAviStreamWriter>("c:\\avicaptest.avi", true); ???????????aviWriter.Width = 640;//设置视频宽度 ???????????aviWriter.Height = 480;//设置视频高度 ???????????aviWriter.CompressType = AviVideoCompressType.MicrosoftVideo1; //设置视频压缩格式 ???????????aviWriter.Open();//打开写入流 ???????????microphone.Open(); ???????????microphone.Start(); ???????????camCapture.Run(); ???????}3.在回调中写入音/视频 数据
???????private void auCaptureBufferCB(byte[] buffer, int length) ???????{ ???????????//写入音频数据 ????????????aviWriter.WriteWavBuffer(buffer, length); ?????????} ???????private void camerasFrameCb(byte[] buffer, int size) ???????{ ???????????//写入视频数据 ???????????aviWriter.WriteBmpBuffer(buffer, Math.Max(size, 640 * 480 * 3)); ???????} ???????private void button2_Click(object sender, EventArgs e) ???????{ ???????????button2.Enabled = false; ???????????microphone.Stop(); ???????????camCapture.Stop(); ???????????aviWriter.Dispose();//写入完了记得关闭流 ???????????aviWriter = null; ???????}DxPackNet 4.保存音视频为本地avi文件
原文地址：https://www.cnblogs.com/dint/p/8422690.html