public async Task Preview(int recordingId)
{
// get recording
var recording = await _context.Recordings
.Include(x => x.Chapters)
.Include(x => x.Outputs)
.FirstOrDefaultAsync(x => x.Id == recordingId);
if (recording == null)
{
return;
}
// create new recording output
var recordingOutput = new RecordingOutput()
{
RecordingId = recordingId,
DateStarted = DateTime.Now,
Status = RecordingStatus.PROCESSING,
JobType = typeof(PreviewRecordingJob).FullName,
JobConfiguration = null
};
_context.RecordingOutputs.Add(recordingOutput);
await _context.SaveChangesAsync();
await UpdateLectureRecordingStatus();
// get lecture
var lecture = await _context.Lectures
.FindAsync(recording.LectureId);
// start encoding preview
if (recording.Type == RecordingType.GREEN_SCREEN_RECORDING || recording.Type == RecordingType.SIMPLE_RECORDING || recording.Type == RecordingType.ZOOM_RECORDING)
{
// file path is file?
string outputFolder = Path.Combine(lecture.ConvertedPath, recording.Id.ToString(), "preview");
string inputFileName = "";
if (File.Exists(recording.FilePath))
{
inputFileName = recording.FilePath;
}
else if (recording.Type == RecordingType.ZOOM_RECORDING)
{
inputFileName = Directory.GetFiles(recording.FilePath)
.Where(x => x.EndsWith(".mp4"))
.SingleOrDefault();
}
else
{
var targetName = recording.CustomTargetName != null ? recording.CustomTargetName : "";
inputFileName = Directory.GetFiles(recording.FilePath)
.Where(x => x.EndsWith(targetName + "_meta.json"))
.SingleOrDefault();
}
if (inputFileName == null)
{
throw new Exception("Could not find studio meta data.");
}
// convert files
RecordingMetadata metaData = null;
if (recording.Type == RecordingType.GREEN_SCREEN_RECORDING)
{
metaData = ConvertStudioRecording(inputFileName, outputFolder);
recording.Duration = metaData.Duration;
}
else if (recording.Type == RecordingType.SIMPLE_RECORDING)
{
metaData = ConvertSimpleRecording(inputFileName, outputFolder);
recording.Duration = metaData.Duration;
}
else if (recording.Type == RecordingType.ZOOM_RECORDING)
{
metaData = ConvertZoomRecording(inputFileName, outputFolder);
recording.Duration = metaData.Duration;
}
if (metaData != null)
{
_context.RecordingChapters.RemoveRange(recording.Chapters);
// add slides
foreach (var slide in metaData.Slides)
{
var chapter = new RecordingChapter()
{
Recording = recording,
StartPosition = slide.StartPosition,
Text = slide.Ocr,
Thumbnail = slide.Thumbnail
};
_context.RecordingChapters.Add(chapter);
}
}
// set status
recordingOutput.Status = RecordingStatus.PROCESSED;
recordingOutput.JobError = null;
recordingOutput.DateFinished = DateTime.Now;
await _context.SaveChangesAsync();
await UpdateLectureRecordingStatus();
}
}
public async Task Execute(ProcessRecordingJobConfiguration configuration)
{
// get recording
var recording = await _context.Recordings
.Include(x => x.Chapters)
.Include(x => x.Outputs)
.FirstOrDefaultAsync(x => x.Id == configuration.RecordingId);
if (recording == null)
{
return;
}
// create new recording output
var recordingOutput = new RecordingOutput()
{
RecordingId = configuration.RecordingId,
DateStarted = DateTime.Now,
Status = RecordingStatus.PROCESSING,
JobType = typeof(ProcessRecordingJob).FullName,
JobConfiguration = JsonConvert.SerializeObject(configuration)
};
_context.RecordingOutputs.Add(recordingOutput);
await _context.SaveChangesAsync();
await UpdateLectureRecordingStatus();
// get lecture
var lecture = await _context.Lectures
.FindAsync(recording.LectureId);
// start encoding
if (recording.Type == RecordingType.GREEN_SCREEN_RECORDING || recording.Type == RecordingType.SIMPLE_RECORDING || recording.Type == RecordingType.ZOOM_RECORDING)
{
// file path is file?
string outputFolder = Path.Combine(lecture.ConvertedPath, recording.Id.ToString(), "output_" + recordingOutput.Id);
string inputFileName = "";
if (File.Exists(recording.FilePath))
{
inputFileName = recording.FilePath;
}
else if (recording.Type == RecordingType.ZOOM_RECORDING)
{
inputFileName = Directory.GetFiles(recording.FilePath)
.Where(x => x.EndsWith(".mp4"))
.SingleOrDefault();
}
else
{
string targetName = recording.CustomTargetName != null ? recording.CustomTargetName : "";
inputFileName = Directory.GetFiles(recording.FilePath)
.Where(x => x.EndsWith(targetName + "_meta.json"))
.SingleOrDefault();
}
// create output directory
Directory.CreateDirectory(outputFolder);
if (inputFileName == null)
{
recordingOutput.Status = RecordingStatus.ERROR;
recordingOutput.JobError = "Could not find studio meta data.";
await _context.SaveChangesAsync();
await UpdateLectureRecordingStatus();
throw new Exception("Could not find studio meta data.");
}
try
{
// convert files
RecordingMetadata metaData = null;
if (recording.Type == RecordingType.GREEN_SCREEN_RECORDING)
{
metaData = ConvertStudioRecording(inputFileName, outputFolder, GetDimension(configuration.OutputType));
}
else if (recording.Type == RecordingType.SIMPLE_RECORDING)
{
metaData = ConvertSimpleRecording(inputFileName, outputFolder, GetDimension(configuration.OutputType));
}
else if (recording.Type == RecordingType.ZOOM_RECORDING)
{
metaData = ConvertZoomRecording(inputFileName, outputFolder);
}
recordingOutput.Status = RecordingStatus.PROCESSED;
recordingOutput.JobError = null;
recordingOutput.DateFinished = DateTime.Now;
await _context.SaveChangesAsync();
await UpdateLectureRecordingStatus();
}
catch (Exception ex)
{
recordingOutput.Status = RecordingStatus.ERROR;
recordingOutput.JobError = ex.Message;
recordingOutput.DateFinished = DateTime.Now;
await UpdateLectureRecordingStatus();
throw ex;
}
}
}
