static void TranscribeVideo(
SampleVideo sample, // sample video to use
string fixedTags, // file in which to save the fixed transcription
string audio, // file in which to save the extracted audio
bool useSmallSample, // if true, use a small sample of the video/audio
bool useAudioFileAlreadyInCloud, // if true, use prior audio in cloud if it exists
string rawTranscription) // file in which to save the raw transcription
{
string videofilePath = sample.filepath;
string objectName = sample.objectname;
RepeatedField <string> phrases = sample.phrases;
AudioProcessing audioProcessing = new AudioProcessing();
string googleCloudBucketName = "govmeeting-transcribe";
TranscribeParameters transParams = new TranscribeParameters
{
audiofilePath = audio,
objectName = objectName,
GoogleCloudBucketName = googleCloudBucketName,
useAudioFileAlreadyInCloud = useAudioFileAlreadyInCloud,
language = "en",
MinSpeakerCount = 2,
MaxSpeakerCount = 6,
phrases = phrases
};
// Clean up from last run
File.Delete(audio);
File.Delete(fixedTags);
if (useSmallSample)
{
string shortVideoFile = videofilePath.Replace(".mp4", "-3min.mp4");
//SplitRecording splitRecording = new SplitRecording();
audioProcessing.ExtractPart(videofilePath, shortVideoFile, 60, 3 * 60);
videofilePath = shortVideoFile;
}
audioProcessing.Extract(videofilePath, audio);
GMFileAccess.SetGoogleCredentialsEnvironmentVariable();
// Transcribe the audio file
TranscribeAudio transcribe = new TranscribeAudio();
Transcribed_Dto response = transcribe.TranscribeAudioFile(transParams, rawTranscription);
string responseString = JsonConvert.SerializeObject(response, Formatting.Indented);
File.WriteAllText(fixedTags, responseString);
WriteCopyOfResponse(responseString, fixedTags);
}
public void Process(string videoFile, string meetingFolder, string language)
{
/////// Copy video to meeting folder /////////
AudioProcessing audioProcessing = new AudioProcessing();
string videofileCopy = Path.Combine(meetingFolder, "video.mp4");
// #### If MaxRecordingSize is not zero, we shorted the recording. ####
if (config.MaxRecordingSize == 0)
{
File.Copy(videoFile, videofileCopy);
}
else
{
audioProcessing.ExtractPart(videoFile, videofileCopy, 0, config.MaxRecordingSize);
}
/////// Extract the audio. ////////////////////////
ExtractAudio extract = new ExtractAudio();
string audioFile = Path.Combine(meetingFolder, "audio.flac");
audioProcessing.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";
TranscribeParameters transParams = new TranscribeParameters
{
audiofilePath = audioFile,
objectName = objectName,
GoogleCloudBucketName = config.GoogleCloudBucketName,
useAudioFileAlreadyInCloud = config.UseAudioFileAlreadyInCloud,
language = language,
MinSpeakerCount = 2,
MaxSpeakerCount = 6
// TODO Add "phrases" field: names of officers
};
Transcribed_Dto transcript = transcribeAudio.TranscribeAudioFile(transParams);
string stringValue = JsonConvert.SerializeObject(transcript, Formatting.Indented);
string outputJsonFile = Path.Combine(meetingFolder, "transcribed.json");
File.WriteAllText(outputJsonFile, stringValue);
}