public async Task ExtractAndAddAudio(string audioInputPath, string audioOutputPath,
string inputPath, string outputPath, string tempDirectory, bool isMultiThread = false, bool trimVideo = false)
{
Console.WriteLine("Extracting Audio");
if (!File.Exists(audioOutputPath))
{
await ExtractAudio(audioInputPath,
audioOutputPath,
(o, args) => { },
isMultiThread
);
}
var audio = await FFmpeg.GetMediaInfo(audioOutputPath);
var inputVideo = await FFmpeg.GetMediaInfo(inputPath);
if (trimVideo && TimeSpan.Compare(audio.Duration, inputVideo.Duration) == -1)
{
// Split Video
Console.WriteLine("Splitting Video");
var tempOutput = AppDomainHelpers
.GetPath(tempDirectory,
$"temp_split_video_output_{Guid.NewGuid().ToString().Replace("-", "")}",
".mp4");
var split = await FFmpeg.Conversions.FromSnippet.Split(inputPath, tempOutput, TimeSpan.Zero,
audio.Duration);
split.UseMultiThread(isMultiThread);
await split.Start();
File.Move(tempOutput, inputPath, true);
}
Console.WriteLine("Adding Audio");
await AddAudio(inputPath,
audioOutputPath,
outputPath,
(o, args) => { },
isMultiThread
);
}
public async Task StartAsync()
{
if (!_isDownloadWebcamVideo && !_isDownloadPresentation)
{
throw new Exception("Either Presentaton or Desk-share Video Must Be Selected");
}
if (!Directory.Exists(_outputDirectory))
{
Directory.CreateDirectory(_outputDirectory);
}
Directory.SetCurrentDirectory(_outputDirectory);
bool downloadVideoResponse = false,
downloadPresentationResponse = false,
hasAudio = false;
_webDriver = WebDriverFactory.Create(_webDriverType, _url);
_bigBlueButtonDocumentParser = new BigBlueButtonDocumentParser(_webDriver, Options);
var deskShareVideoName = $"{_outputFileName}-desk";
var webcamVideoName = $"{_outputFileName}-webcam";
var audioOutputName = $"{_outputFileName}-output";
var presentationName = $"{_outputFileName}-presentation";
var tmpPresentationName = $"{_outputFileName}-tmp";
var downloadDeskShareThread = new Thread(() =>
{
if (_isDownloadDeskShareVideo)
{
var response = DownloadVideo(deskShareVideoName).GetAwaiter().GetResult();
downloadVideoResponse = response.IsSuccess;
}
});
var downloadWebcamThread = new Thread(() =>
{
if (_isDownloadWebcamVideo)
{
var response = DownloadWebcam(webcamVideoName).GetAwaiter().GetResult();
hasAudio = response.IsSuccess;
}
});
var downloadPresentationThread = new Thread(() =>
{
if (_isDownloadPresentation)
{
var response = DownloadPresentation(tmpPresentationName).GetAwaiter().GetResult();
downloadPresentationResponse = response.IsSuccess;
}
});
downloadDeskShareThread.Start();
downloadWebcamThread.Start();
downloadPresentationThread.Start();
downloadWebcamThread.Join();
downloadDeskShareThread.Join();
downloadPresentationThread.Join();
if (!downloadVideoResponse && !downloadPresentationResponse)
{
throw new BigBlueButtonDocumentException("Neither Video Nor Presentation Couldn't Be Downloaded.");
}
var audioInputPath = AppDomainHelpers.GetPath(_outputDirectory, webcamVideoName, ".mp4");
var audioOutputPath = AppDomainHelpers.GetPath(_outputDirectory, $"{audioOutputName}", ".mp3");
var deskShareInputPath = AppDomainHelpers.GetPath(_outputDirectory, $"{deskShareVideoName}", ".mp4");
var videoOutputPath = AppDomainHelpers.GetPath(_outputDirectory, _outputFileName, ".mp4");
var presentationOutputPath = AppDomainHelpers.GetPath(_outputDirectory, presentationName, ".mp4");
var tmpPresentationPath = AppDomainHelpers.GetPath(_outputDirectory, tmpPresentationName, ".mp4");
if (downloadVideoResponse)
{
if (hasAudio)
{
await _videoService.ExtractAndAddAudio(audioInputPath, audioOutputPath, deskShareInputPath,
videoOutputPath, _outputDirectory, _isUseMultiThread, true);
}
else
{
File.Move(deskShareInputPath, videoOutputPath, true);
}
}
if (downloadPresentationResponse)
{
if (hasAudio)
{
await _videoService.ExtractAndAddAudio(audioInputPath, audioOutputPath, tmpPresentationPath,
presentationOutputPath, _outputDirectory, _isUseMultiThread, true);
}
else
{
File.Move(tmpPresentationPath, presentationOutputPath, true);
}
}
RemoveTempFiles(
audioOutputName,
deskShareVideoName,
tmpPresentationName
);
_webDriver.Quit();
}
public static void DeleteFileInAppDirectory(string directory, string fileName, string fileExtension)
{
DeleteIfExists(AppDomainHelpers.GetPath(directory, fileName, fileExtension));
}
