First, some background:
I'm developing a Silverlight 3 application and want to add support for live streaming (webcam + microphone as input). Unfortunately, Silverlight cannot access a webcam or a microphone itself, so I need to create a stand-alone application for establishing the media stream. I guess Silverlight would work best with Microsoft technology, so I want to use the ASF format with WMV/WMA encoding.

首先,一些背景:我正在开发一个Silverlight 3应用程序,并希望添加对实时流媒体的支持(网络摄像头+麦克风作为输入)。不幸的是,Silverlight无法访问网络摄像头或麦克风本身,因此我需要创建一个独立的应用程序来建立媒体流。我想Silverlight最适合使用Microsoft技术,所以我想使用带有WMV / WMA编码的ASF格式。

After doing some research, here is what I think I could do:

做了一些研究之后,我认为我可以做到:

• It seems it is possible to capture both webcam and microphone input with DirectShow and then combine it into one "stream".

似乎可以使用DirectShow捕获网络摄像头和麦克风输入,然后将其合并为一个“流”。

• To encode the stream, I probably need to pass it to the Windows Media Format SDK libraries (MSDN documentation describes how to use DirectShow with WM ASF Writer).

要对流进行编码,我可能需要将其传递给Windows Media Format SDK库(MSDN文档描述了如何将DirectShow与WM ASF Writer一起使用)。

• I think it should be then possible to use something like "Network Sink" to broadcast the ASF stream (without writing it to the HDD).

我认为应该可以使用类似“网络接收器”的东西来广播ASF流(而不是将其写入硬盘)。

• I guess that connecting lots of clients to the stream would be quite heavy on bandwidth, so I should probably send the stream to a server and broadcast it from there. I just don't know if it's possible to use a combination of ASF Reader/Writer to "pass" the stream through the server. I also don't know if I could use multicasting to achieve a similar result.

我想将大量客户端连接到流上的带宽非常大,所以我应该将流发送到服务器并从那里广播。我只是不知道是否可以使用ASF Reader / Writer的组合来通过服务器“传递”流。我也不知道我是否可以使用多播来获得类似的结果。

I'm planning to use C#, although this probably doesn't make much difference as I will have to use some wrappers for C++ libraries anyway (like DirectShow.Net or SlimDX).

我打算使用C#,虽然这可能没什么区别,因为我必须使用一些C ++库的包装器(比如DirectShow.Net或SlimDX)。

Unfortunately, I have virtually no experience with handling media streams. So my first question is, is it even possible to do streaming in the way I described?

不幸的是,我几乎没有处理媒体流的经验。所以我的第一个问题是,甚至可以按照我描述的方式进行流式传输吗?

And if it IS possible, is it a sensible way or should I consider using some different libraries/frameworks?

如果有可能,这是一种明智的方式,还是应该考虑使用一些不同的库/框架?

1 个解决方案