我正在接收H264编码的帧,但是当我将其转换为位图时,我只会得到黑屏。分辨率是正确的。我尝试了很多事情,却找不到可行的方法。谢谢!这是我的代码
public System.Drawing.Bitmap CopyDataToBitmap(byte[] data)
{
//Here create the Bitmap to the know height, width and format
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap((int)2592, (int)1936, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
//Create a BitmapData and Lock all pixels to be written
System.Drawing.Imaging.BitmapData bmpData = bmp.LockBits(
new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height),
System.Drawing.Imaging.ImageLockMode.WriteOnly, bmp.PixelFormat);
//Copy the data from the byte array into BitmapData.Scan0
Marshal.Copy(data, 0, bmpData.Scan0, data.Length);
//Unlock the pixels
bmp.UnlockBits(bmpData);
//Return the bitmap
return bmp;
}
public async void ListenVideo()
{
byte[] data = new byte[1024];
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 11111);
UdpClient newsock = new UdpClient(ipep);
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 11111);
data = newsock.Receive(ref sender);
string message = Encoding.UTF8.GetString(data, 0, data.Length);
while (true)
{
data = newsock.Receive(ref sender);
message = Encoding.UTF8.GetString(data, 0, data.Length);
MemoryStream stream = new MemoryStream(data);
panel1.BackgroundImage = CopyDataToBitmap(data);
await Task.Delay(2000);
}
}
H.264是针对基本视频流的编码,不是针对单独图像的编码。
这意味着解码过程涉及视频编码的设置。没有单个功能(至少不应该这样工作)获取比特流并输出视频帧。
通常,您将设置流解码上下文,然后在准备好时输入输入并提取输出。
Windows附带有一个备用H.264编码器,并且使用此类解码服务的典型API是Media Foundation。它不是.NET的API,因此Media Foundation with C#
也有Media Foundation .NET项目带有本机Media Foundation API上的C#包装器。