FFmpeg.Conversions.FromSnippet.Convert crashes if outputFilePath is just file name.

[GitHub King]

    static async Task Main(string[] args)
    {
        Directory.SetCurrentDirectory(AppDomain.CurrentDomain.BaseDirectory);
        
        var snippet = await FFmpeg.Conversions.FromSnippet.Convert("test.mp3", "test.aac");
        IConversionResult result = await snippet.Start();
    }

System.ArgumentException: 'Path cannot be the empty string or all whitespace. Arg_ParamName_Name'

I looked at the decompiled code and it happened in the code where it tries to creates parent directory, if it does not exist. When the third parameter is just file name, it should just create it in the working directory, instead of crashing.

A workaround is passing "./test.aac" instead of "test.aac".

[Tomasz Żmuda]

#433

[Tomasz Żmuda]

Fix was deployed with version 5.2.1