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• How to make ffmpeg to throw exception on try/catch for working directory and for arguments ?

  30 juin 2022, par Sharo SA

  If for example i'm setting the FileName(outputDirectory) to null it will throw exception.

  


  The class when i'm using process of the ffmpeg.exe :

  


  public void Start()
        {
            process = new Process();
            process.StartInfo.FileName = outputDirectory; // Change the directory where ffmpeg.exe is.  
            process.EnableRaisingEvents = false;
            process.StartInfo.WorkingDirectory = workingDirectory; // The output directory  
            process.StartInfo.Arguments = arguments;
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.RedirectStandardInput = true; //Redirect stdin
            process.StartInfo.CreateNoWindow = true;
            process.Start();

            errorMessage = false;
            startRecord = true;
        }


  


  but if i'm setting the WorkingDirectory to null or entering some not valid Arguments like "sadasdasd" it will not throw exception not on the WorkingDirectory and not on the Arguments.

  


  In Form1 :

  


  private void recordStripMenuItem_Click(object sender, EventArgs e)
        {
            recordToggle = !recordToggle;

            if (recordToggle)
            {
                try
                {
                    record.workingDirectory = settingsForm.workingDirectory;
                    record.outputDirectory = settingsForm.outputDirectory;
                    record.arguments = settingsForm.arguments;
                    record.Start();
                }
                catch(Exception ex)
                {
                    recordStripMenuItem.Text = "Record";
                    Icon = iconGreen;
                    TextInfo("Waiting");
                    recordToggle = false;
                    MessageBox.Show("Arguments are not valid : " + ex.Message);
                    
                }
                if (!FFmpeg_Capture.errorMessage)
                {
                    settingsForm.Close();
                    recordStripMenuItem.Text = "Stop";
                    Icon = iconRed;
                    TextInfo("Recording");
                }
            }
            else
            {
                recordStripMenuItem.Text = "Record";
                Icon = iconGreen;
                TextInfo("Waiting");
                record.Stop();
            }
        }


  


  The variable record is instance of the FFmpeg_Capture class with the process of the ffmpeg.
It's throwing exception only on the FileName(outputDirectory).

  


• ffmpeg assert - throw exception instead of abort

  21 novembre 2011, par ronag

  I'm using ffmpeg in my C++ application.

  When trying to play certain files an assertion inside of ffmpeg fails, which causes it to call abort() which terminates my application. I do not want this behavior, rather I want to get the chance to recover, preferably through an exception.

  Anyone got any ideas as to how I can get around the problem with ffmpeg/assert potentially terminating my application ?

  EDIT :

  The only way I can think of right now is to change the ffmpeg assert macro so that it causes an access violation which I can catch through SEH exceptions. Ugly and potentially bad solution ?

• Don’t throw an error if the canvasToBlob function is not available.

  6 mars 2012, par Sebastian Tschan

  m js/jquery.fileupload-ip.js Don’t throw an error if the canvasToBlob function is not available.