Mac上的C#启动过程-FFMPEG-退出代码1 [英] C# Start Process on Mac - FFMPEG - Exit Code 1

问题描述

我正在尝试在Mac和Windows(使用Unity)上启动一个进程，以运行FFMPEG将视频转换为.ogv视频.我的代码如下:

I am trying to start a process on Mac and Windows (using Unity) to run FFMPEG to convert a video to a .ogv video. My code is as follows:

    string command = "ffmpeg -i '" + filepath + "'  -codec:v libtheora -qscale:v 10 -codec:a libvorbis -qscale:a 10 -y '"+workingDir+"/ogv_Video/"+System.IO.Path.GetFileNameWithoutExtension(filepath)+".ogv'";
    UnityEngine.Debug.Log("Command: "+command);

    try{

        System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo (workingDir+"/..", command);
        startInfo.CreateNoWindow = true;
        startInfo.RedirectStandardOutput = true;
        startInfo.RedirectStandardError = true;
        startInfo.UseShellExecute = false;
        startInfo.FileName =workingDir+"/ffmpeg";

        //Process.Start (startInfo);
        Process p = Process.Start(startInfo); 
        p.EnableRaisingEvents = true;
        string strOutput = p.StandardOutput.ReadToEnd(); 
        UnityEngine.Debug.Log ("Running..."+strOutput);
        p.WaitForExit(); 

        UnityEngine.Debug.Log ("Got here. "+strOutput);
        int exitCode = p.ExitCode;
        UnityEngine.Debug.Log ("Process exit code = "+exitCode);
    }
    catch(Exception e) {
        UnityEngine.Debug.Log ("An error occurred");
        UnityEngine.Debug.Log ("Error: "+e);
    }

该命令将执行，并且不会出现任何异常.但是，它会立即终止并显示退出代码1 ，该代码为常见错误的补充"-这似乎不太有用！

The command executes and does not through any exception. However, it terminates instantly and prints Exit Code 1 which is "Catchall for general errors" -this seems not too helpful!

请问我的代码有什么问题?

What am I doing wrong with my code, please?

您会注意到我的代码完整地打印了命令.如果我复制该命令并将其粘贴到终端中，则它运行得很好.

You'll notice that my code prints out the command in full. If I copy that command and paste it into the terminal, it runs absolutely fine.

推荐答案

事实证明我错误地设置了参数.引用此堆栈溢出问题，我可以使用以下代码产生预期的结果:

It turns out I was setting up the arguments wrongly. Referring to this Stack Overflow question, I was able to produce the expected result with the following code:

try{

        Process process = new Process();
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.FileName = Path.GetDirectoryName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName) +@"ffmpeg";

        process.StartInfo.Arguments = command;
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.CreateNoWindow = true;
        process.Start();


        JSONDataObject rtnMsg = new JSONDataObject("StartConvertOK", "-1", new List<string>());
        return JsonUtility.ToJson(rtnMsg);

    }

似乎答案与我所做的没什么不同，但确实有效！

It does seem as though the answer was not that different from what I was doing, but it does work!

这篇关于Mac上的C#启动过程-FFMPEG-退出代码1的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！