如何流在asp.net中的视频内容？ [英] How to stream video content in asp.net?

问题描述

我有以下的code，这将下载的视频内容：

I have the following code which downloads video content:

WebRequest wreq = (HttpWebRequest)WebRequest.Create(url);
using (HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse())
using (Stream mystream = wresp.GetResponseStream())
{
  using (BinaryReader reader = new BinaryReader(mystream))
  {
    int length = Convert.ToInt32(wresp.ContentLength);
    byte[] buffer = new byte[length];
    buffer = reader.ReadBytes(length);

    Response.Clear();
    Response.Buffer = false;
    Response.ContentType = "video/mp4";
    //Response.BinaryWrite(buffer);
    Response.OutputStream.Write(buffer, 0, buffer.Length);
    Response.End();
  }
}

但问题是，正在播放的整个文件下载之前。我怎样才能使它流并发挥它仍然在下载？或者这是由客户端/接收器应用程序来管理？

But the problem is that the whole file downloads before being played. How can I make it stream and play as it's still downloading? Or is this up to the client/receiver application to manage?

推荐答案

您正在阅读的整个文件到一个缓冲区，然后立即发送整个字节数组。

You're reading the entire file into a single buffer, then sending the entire byte array at once.

您应该读入在，而循环较小的缓冲区。

You should read into a smaller buffer in a while loop.

例如：

byte[] buffer = new byte[4096];

while(true) {
    int bytesRead = myStream.Read(buffer, 0, buffer.Length);
    if (bytesRead == 0) break;
    Response.OutputStream.Write(buffer, 0, bytesRead);
}

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