3

我想做这样的事情

ffmpeg -i audio.mp3 -f flac - | oggenc2.exe - -o audio.ogg

我知道如何ffmpeg -i audio.mp3 -f flac在 .NET 中使用进程类,但是如何将它通过管道传输到 oggenc2?

如何做到这一点的任何示例(它不需要是 ffmpeg 或 oggenc2)都可以。

4

1 回答 1

4

好的,我编写了以下代码来执行此操作:

    Process ffmpeg = new Process
    {
        StartInfo = new ProcessStartInfo
        {
            FileName = "ffmpeg.exe",
            Arguments = "-i audio.mp3 -f flac -",
            UseShellExecute = false,
            RedirectStandardOutput = true,
            WindowStyle = ProcessWindowStyle.Hidden
        }
    };
    Process oggenc2 = new Process
    {
        StartInfo = new ProcessStartInfo
        {
            FileName = "oggenc2.exe",
            Arguments = "- -o audio.ogg",
            UseShellExecute = false,
            RedirectStandardInput = true,
            WindowStyle = ProcessWindowStyle.Hidden
        }
    };

    ffmpeg.Start();
    oggenc2.Start();

    int bufferLength = 4096;
    var input = oggenc2.StandardInput.BaseStream;
    var output = ffmpeg.StandardOutput.BaseStream;

    using (BinaryWriter writer = new BinaryWriter(input))
    {
        using (BinaryReader r = new BinaryReader(output))
        {
            byte[] buffer = new byte[bufferLength];
            int bytesRead;
            do
            {
                bytesRead = r.Read(buffer, 0, bufferLength);
                writer.Write(buffer, 0, bytesRead);
            } while (bytesRead > 0);
        }
    }

    ffmpeg.WaitForExit();

希望这可以帮助。

于 2010-03-23T17:30:18.063 回答