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使用NAudio替换视频的音频流

[英]Replace the audio stream of a video using NAudio

原文 2013-11-21 04:02:18 5 2 c#/ audio/ video/ naudio/ ms-media-foundation

I have 2 files. 我有2个档案。 Both are the same length (in seconds): 两者的长度相同（以秒为单位）：

a video file (H.264, .mov) 视频文件（H.264，.mov）
an audio file (PCM, .wav) 音频文件（PCM，.wav）

How do I use the NAudio .NET library in my C# application to overwrite the audio of file #1 with the audio from file #2? 如何在C＃应用程序中使用NAudio .NET库用文件＃2的音频覆盖文件＃1的音频？ I want to write the final result to disk as a new video file. 我想将最终结果作为新的视频文件写入磁盘。

I believe this is possible using the Media Foundation capabilities of NAudio 1.7, but I can't figure out how to modify the audio stream of a video file and re-save the video. 我相信使用NAudio 1.7的Media Foundation功能可以做到这一点，但是我不知道如何修改视频文件的音频流并重新保存视频。

2 个解决方案

I'm afraid this is not possible with NAudio 1.7. 恐怕NAudio 1.7无法做到这一点。 NAudio has interop wrappers for a large percentage of the Media Foundation API, but the focus of the MediaFoundationReader and MediaFoundationEncoder classes is just on the audio. NAudio具有用于大部分Media Foundation API的互操作包装，但是MediaFoundationReader和MediaFoundationEncoder类的焦点仅在音频上。 It should be possible with Media Foundation, so if you can find a C++ sample that does this with the MF API, you could recreate it in C# using the interop wrappers from NAudio. Media Foundation应该有可能，因此，如果您找到一个使用MF API做到这一点的C ++示例，则可以使用NAudio的互操作包装在C＃中重新创建它。 Alternatively you could try using a different managed Media Foundation library, such as Media Foundation .NET 或者，您可以尝试使用其他托管的Media Foundation库，例如Media Foundation .NET。

You can use FFMPEG to do that. 您可以使用FFMPEG来做到这一点。 Call FFMPEG from c# and find the command to merge Video with Audio. 从c＃调用FFMPEG，然后找到将视频与音频合并的命令。