public static string BuildArgumentsString(AvOptions options)
{
StringBuilder result = new StringBuilder();
AppendInputFile(result, options);
AppendSpace(result);
AppendAudioBitrate(result, options);
AppendSpace(result);
AppendFormat(result, options);
AppendSpace(result);
AppendVideoCodec(result, options);
AppendSpace(result);
AppendVideoBitrate(result, options);
AppendSpace(result);
AppendVideoCompression(result, options);
AppendSpace(result);
AppendAudioCodec(result, options);
AppendSpace(result);
AppendAudioType(result, options);
AppendSpace(result);
AppendAudioQuality(result, options);
AppendSpace(result);
AppendThreads(result, options);
AppendSpace(result);
AppendOverwriteOption(result, options);
AppendSpace(result);
AppendOutputFile(result, options);
return result.ToString();
}
private static void AppendOutputFile(StringBuilder argumentString, AvOptions options)
{
if (string.IsNullOrEmpty(options.OutputFile))
throw new ArgumentException("Output file is not defined");
argumentString.AppendFormat("\"{0}\"", options.OutputFile);
}
private string GetExeFileName(AvOptions options)
{
return options.VideoOptions != null && options.VideoOptions.VideoCodec.HasValue &&
options.VideoOptions.VideoCodec.Value == VideoCodecType.VP8
? AVConv
: FFMpeg;
}
public void CanBuildArgumentsForMp3Audio()
{
AvOptions options = new AvOptions
{
VideoOptions = null,
AudioOptions = new AudioOptions
{
Bitrate = "44100",
AudioCodec = AudioCodecType.Mp3
},
Format = "mp3",
InputFile = "test.wav",
OutputFile = "result.mp3",
Overwrite = false,
};
string arguments = MediaConverterArgumentsBuilder.BuildArgumentsString(options);
string expectedResult = string.Format("-i \"{0}\" -ar 44100 -f mp3 -c:a libmp3lame -threads 2 \"{1}\"", options.InputFile, options.OutputFile);
Assert.True(arguments == expectedResult);
}
public void CanBuildArgumentsForH254Video()
{
AvOptions options = new AvOptions
{
AudioOptions = new AudioOptions
{
Bitrate = "44100",
},
VideoOptions = new VideoOptions
{
Bitrate = "1000k",
VideoCodec = VideoCodecType.H254
},
InputFile = "movie.avi",
OutputFile = "movie.mp4",
Overwrite = false,
};
string arguments = MediaConverterArgumentsBuilder.BuildArgumentsString(options);
string expectedResult = string.Format("-i \"{0}\" -ar 44100 -c:v libx264 -vb 1000k -threads 2 \"{1}\"", options.InputFile, options.OutputFile);
Assert.True(arguments == expectedResult);
}
private static void AppendThreads(StringBuilder argumentString, AvOptions options)
{
argumentString.AppendFormat("-threads {0}", options.Threads);
}
private static void AppendOverwriteOption(StringBuilder argumentString, AvOptions options)
{
if (options.Overwrite)
argumentString.Append("-y");
}
private static void AppendFormat(StringBuilder argumentString, AvOptions options)
{
if (!string.IsNullOrEmpty(options.Format))
argumentString.AppendFormat("-f {0}", options.Format);
}
private static void AppendAudioType(StringBuilder argumentString, AvOptions options)
{
if (options.AudioOptions != null && options.AudioOptions.Audio.HasValue)
argumentString.AppendFormat("-ac {0}", (int)options.AudioOptions.Audio);
}
private static void AppendAudioQuality(StringBuilder argumentString, AvOptions options)
{
if (options.AudioOptions != null && options.AudioOptions.AudioQuality.HasValue)
argumentString.AppendFormat("-aq {0}", (int)options.AudioOptions.AudioQuality.Value);
}
private static void AppendAudioBitrate(StringBuilder argumentString, AvOptions options)
{
if (!string.IsNullOrEmpty(options.AudioOptions.Bitrate))
argumentString.AppendFormat("-ar {0}", options.AudioOptions.Bitrate);
}
private static void AppendVideoCompression(StringBuilder argumentString, AvOptions options)
{
if (options.VideoOptions != null && options.VideoOptions.VideoCompression.HasValue)
argumentString.AppendFormat("-qmax {0}", (int)options.VideoOptions.VideoCompression.Value);
}
private static void AppendVideoCodec(StringBuilder argumentString, AvOptions options)
{
if (options.VideoOptions != null && options.VideoOptions.VideoCodec.HasValue)
argumentString.AppendFormat("-c:v {0}", EnumUtils.GetDescription(options.VideoOptions.VideoCodec.Value));
}
private static void AppendVideoBitrate(StringBuilder argumentString, AvOptions options)
{
if (options.VideoOptions != null && !string.IsNullOrEmpty(options.VideoOptions.Bitrate))
argumentString.AppendFormat("-vb {0}", options.VideoOptions.Bitrate);
}
public Task<string> Convert(AvOptions options)
{
string fileName = GetExeFileName(options);
return Run(MediaConverterArgumentsBuilder.BuildArgumentsString(options), fileName);
}
private static void AppendAudioCodec(StringBuilder argumentString, AvOptions options)
{
if (options.AudioOptions.AudioCodec.HasValue)
argumentString.AppendFormat("-c:a {0}", EnumUtils.GetDescription(options.AudioOptions.AudioCodec.Value));
}
public void CanBuildArgumentsForOggVideo()
{
AvOptions options = new AvOptions
{
AudioOptions = new AudioOptions
{
AudioCodec = AudioCodecType.Ogg,
Bitrate = "44100",
},
VideoOptions = new VideoOptions
{
Bitrate = "1000k",
VideoCodec = VideoCodecType.Theora
},
InputFile = "movie.avi",
OutputFile = "movie.mp4"
};
string arguments = MediaConverterArgumentsBuilder.BuildArgumentsString(options);
string expectedResult = string.Format("-i \"{0}\" -ar 44100 -c:v libtheora -vb 1000k -c:a libvorbis -threads 2 -y \"{1}\"", options.InputFile, options.OutputFile);
Assert.True(arguments == expectedResult);
}