我正在尝试在Mac和Windows上启动一个进程(使用Unity)来运行FFMPEG以将视频转换为.ogv视频。我的代码如下:
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);
}
该命令执行并且不会通过任何异常。然而,它立即终止并打印退出代码1 ,这是“一般错误的捕获” - 这似乎不太有用!
我的代码出了什么问题,好吗?
你会注意到我的代码完全打印出了命令。如果我复制该命令并将其粘贴到终端,它运行绝对正常。
答案 0 :(得分:0)
事实证明我错误地设置了论据。参考this Stack Overflow question,我能够使用以下代码生成预期结果:
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);
}
似乎答案与我正在做的不同,但确实有效!