.NET视频播放库，它允许改变播放速度？ [英] .NET video play library which allows to change the playback rate?

问题描述

我整合了视频播放器，以现有的.NET WinForms应用程序。

我第一次尝试使用Windows媒体播放器控制，这是包含在Windows SDK， 但我无法改变播放速度。

以下是code我写的改变速度。

 如果（axWindowsMediaPlayer1.settings.get_isAvailable（速度））
{
    axWindowsMediaPlayer1.settings.rate = 3.0;
}
 

if语句的条件总是不管我用什么视频文件，返回假。没有人有任何想法，为什么我不能改变的速度？这真的需要可改变播放速度，让WMP的控制似乎是一个不错的选择，如果它是不可能这样做的。

或者说，有没有替代的解决方案，让我改变的速度？ preferably一个基于.NET的库，不涉及任何非托管code。

谢谢！

解决方案

我结束了使用DirectShow.NET

（http://directshownet.sourceforge.net/），这是一个开放源码库。它含有大量的样品，它具有与再现速率控制的样品。

I am integrating a video player to an existing .NET WinForms application.

I first tried to use "Windows Media Player Control" which is included in Windows SDK, but I could not change the playback rate.

The following is the code I wrote to change the rate.

if (axWindowsMediaPlayer1.settings.get_isAvailable("Rate"))
{
    axWindowsMediaPlayer1.settings.rate = 3.0;
}

The condition in the if statement always returns "false" no matter what video file I use. Does anyone have any idea why I cannot change the rate? It really needs to be available to change the playback rate, so WMP control seems to be a bad choice if it's impossible to do so.

Or, is there any alternative solution which allows me to change the rate? Preferably a .NET based library which does not involve any unmanaged code.

Thanks!

解决方案

I ended up using DirectShow.NET (http://directshownet.sourceforge.net/) which is an open-source library. It contains a lot of samples, and it has a sample with playback rate control.

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