/* Split the video, audio and JSON data for this meeting into smaller
* segments. This allows multiple people to work on the fixes to
* the text at the same time.
*/
public void Split(string meetingFolder, string videofile, string fixasrFile,
int segmentSize, int segmentOverlap)
{
string splitFolder = meetingFolder + "\\" + "FixText";
// The processed recording will next go through the following workflow:
// 1. Users will fix errors in the text generated by auto voice recognition.
// 2. Users will add metadata tags to the transcript.
// To facilitate this, we will split the video, audio and transcript files into smaller segments.
// This has the advantages that:
// 1. More than one volunteer can work on the recording at the same time.
// 2. Less video or audio data needs to be downloaded to the user at one time.
string stringValue = File.ReadAllText(fixasrFile);
FixasrView fixasr = JsonConvert.DeserializeObject <FixasrView>(stringValue);
// Split the recording into parts and put them each in subfolders of subfolder "parts".
SplitRecording splitRecording = new SplitRecording();
int parts = splitRecording.Split(videofile, splitFolder, segmentSize, segmentOverlap);
// Also extract the audio from each of these segments.
// Some user may prefer to work with the audio for fixing the transcript.
// We will put the audio files in the same folder as the video.
ExtractAudio extract = new ExtractAudio();
extract.ExtractAll(splitFolder);
// Split the full transcript into segments that match the audio and video segments in size.
SplitTranscript splitTranscript = new SplitTranscript();
splitTranscript.split(fixasr, splitFolder, segmentSize, segmentOverlap, parts);
}
public void Process(string videoFile, string meetingFolder, string language)
{
/////// Copy video to meeting folder /////////
FileInfo infile = new FileInfo(videoFile);
string videofileCopy = meetingFolder + "\\" + "01-Video.mp4";
if (!config.IsDevelopment)
{
File.Copy(videoFile, videofileCopy);
}
else
{
// #### FOR DEVELOPMENT: WE SHORTEN THE RECORDING FILE. ####
SplitRecording splitRecording = new SplitRecording();
splitRecording.ExtractPart(videoFile, videofileCopy, 0, config.RecordingSizeForDevelopment);
}
/////// Extract the audio. ////////////////////////
ExtractAudio extract = new ExtractAudio();
string audioFile = meetingFolder + "\\" + "02-Audio.flac";
extract.Extract(videofileCopy, audioFile);
/////// Transcribe the audio file. /////////////
// We want the object name in the cloud to be the original video file name with ".flac" extension.
string objectName = Path.GetFileNameWithoutExtension(videoFile) + ".flac";
TranscribeResponse transcript;
//if (!config.UseAudioFileAlreadyInCloud)
//{
// Move audio file to cloud and transcribe
transcript = transcribeAudio.MoveToCloudAndTranscribe(audioFile, objectName, language);
//} else
//{
// // For development and it's already in cloud
// // TODO - check if it is already in cloud
// transcript = transcribeAudio.TranscribeInCloud(objectName, language);
//}
string stringValue = JsonConvert.SerializeObject(transcript, Formatting.Indented);
string outputJsonFile = meetingFolder + "\\" + "03-Transcribed.json";
File.WriteAllText(outputJsonFile, stringValue);
/////// Reformat the JSON transcript to match what the fixasr routine will use.
ModifyTranscriptJson convert = new ModifyTranscriptJson();
outputJsonFile = meetingFolder + "\\" + "04-ToFix.json";
FixasrView fixasr = convert.Modify(transcript);
stringValue = JsonConvert.SerializeObject(fixasr, Formatting.Indented);
File.WriteAllText(outputJsonFile, stringValue);
/////// Split the video, audio and transcript into multiple work segments
//SplitIntoWorkSegments split = new SplitIntoWorkSegments();
//split.Split(meetingFolder, videofileCopy, outputJsonFile, config.FixasrSegmentSize,
// config.FixasrSegmentOverlap);
}
