你好:
建议使用一些第三方的解决方案,可以尝试ffmpeg-sharp, 使用C#语言调用这个程序,然后输入一些参数。具体请搜索一下,这篇英文文章供你参考:
http://www.codeproject.com/Articles/774093/Another-FFmpeg-exe-Csharp-Wrapper
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