async function transcribeAudio()

in source/lambda/transcribeaudio/transcribeaudio.js [131:185]
43 lines of code
3 McCabe index (conditional complexity)

async function transcribeAudio(params) {
  try {
    /**
     * First try and purge the previous transcribe job
     * Transcribe uses the job id as the output result file
     * name in S3 which is our link to videoId so we must remove
     * prior runs
     */
    await removeTranscribeJob(params);

    var transcribeParams = {
      Media: {
        MediaFileUri: params.mediaFileUrl,
      },
      Subtitles: {
        Formats: ["srt"],
      },
      MediaFormat: "mp4",
      OutputKey: "sourcecaptions/",
      LanguageCode: "zh-CN",
      TranscriptionJobName: params.videoId,
      OutputBucketName: params.outputBucket,
    };

    transcribeParams.LanguageCode = params.transcribeLanguage;

    if (params.vocabularyExists) {
      console.log("[INFO] found existing vocabulary enabling");
      transcribeParams.Settings = {
        VocabularyName: params.vocabularyName,
      };
    } else {
      console.log(
        "[INFO] no existing vocabulary found, skipping vocabulary use"
      );
    }

    console.log(
      "[INFO] about to launch Transcribe job with params: %j",
      transcribeParams
    );

    var transcribeResult = await transcribe
      .startTranscriptionJob(transcribeParams)
      .promise();

    console.log(
      "[INFO] got startTranscriptionJob() response: %j",
      transcribeResult
    );
  } catch (error) {
    console.log("[ERROR] failed to transcribe audio", error);
    throw error;
  }
}