使用 MediaElement 从 Stream 播放视频 [英] Using MediaElement to play video from Stream

问题描述

是否可以使用 WPF MediaElement 从 System.IO.Stream 对象播放流视频?正在从存储媒体文件的 WCF 服务中检索 Stream 对象.

Is it possible to use the WPF MediaElement to play streaming video from a System.IO.Stream object? The Stream object is being retrieved from a WCF service that stores the media files.

推荐答案

如果您可以让 WCF 通过 http-URL (GET) 交付媒体对象，那么您只需将该 URL 分配给MediaElement.Source 属性 - 参见 http://msdn.microsoft.com/en-us/library/system.windows.controls.mediaelement.source.aspx.

IF you can make the WCF deliver the Media Object via a http-URL (GET) then you can just assign that URL to the MediaElement.Source property - see http://msdn.microsoft.com/en-us/library/system.windows.controls.mediaelement.source.aspx.

对于此类 URL 不可用/不可能的情况:

For cases where such URL is not available/possible:

目前无法分配流 - 尽管有一些技巧可以实现这一点，对于基于 DirectShow 的示例，请参见 http://social.msdn.microsoft.com/forums/en-US/wpf/thread/6191ef1a-0010-4294-a5b4-451bbadca33a//a> 和 http://jmorrill.hjtcentral.com/主页/tabid/428/EntryId/15/WPF-Hackery-Part-I.aspx .

Assigning a Stream is currently not possible - although there are some hacks to make that happen, for a DirectShow-based example see http://social.msdn.microsoft.com/forums/en-US/wpf/thread/6191ef1a-0010-4294-a5b4-451bbadca33a/ and http://jmorrill.hjtcentral.com/Home/tabid/428/EntryId/15/WPF-Hackery-Part-I.aspx .

另一种选择是以某种方式托管 Silverlight MediaElement 并使用 SetSource 方法，该方法可以获取流并播放它...参见 http://silverlightviewport.codeplex.com/SourceControl/list/changesets 和 http://msdn.microsoft.com/en-us/library/cc190669%28v=vs.95%29.aspx

Another option would be to somehow host the Silverlight MediaElement and use the SetSource method which can take a stream and play it... see http://silverlightviewport.codeplex.com/SourceControl/list/changesets and http://msdn.microsoft.com/en-us/library/cc190669%28v=vs.95%29.aspx

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