Mentranskripsikan ucapan di file Cloud Storage

Mentranskripsikan speech to text dari file video yang disimpan di Cloud Storage.

Jelajahi lebih lanjut

Untuk dokumentasi mendetail yang menyertakan contoh kode ini, lihat artikel berikut:

• Mendapatkan transkripsi trek audio

Contoh kode

Go

Untuk mengautentikasi ke Video Intelligence, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

func speechTranscriptionURI(w io.Writer, file string) error {
	ctx := context.Background()
	client, err := video.NewClient(ctx)
	if err != nil {
		return err
	}
	defer client.Close()

	op, err := client.AnnotateVideo(ctx, &videopb.AnnotateVideoRequest{
		Features: []videopb.Feature{
			videopb.Feature_SPEECH_TRANSCRIPTION,
		},
		VideoContext: &videopb.VideoContext{
			SpeechTranscriptionConfig: &videopb.SpeechTranscriptionConfig{
				LanguageCode:               "en-US",
				EnableAutomaticPunctuation: true,
			},
		},
		InputUri: file,
	})
	if err != nil {
		return err
	}
	resp, err := op.Wait(ctx)
	if err != nil {
		return err
	}

	// A single video was processed. Get the first result.
	result := resp.AnnotationResults[0]

	for _, transcription := range result.SpeechTranscriptions {
		// The number of alternatives for each transcription is limited by
		// SpeechTranscriptionConfig.MaxAlternatives.
		// Each alternative is a different possible transcription
		// and has its own confidence score.
		for _, alternative := range transcription.GetAlternatives() {
			fmt.Fprintf(w, "Alternative level information:\n")
			fmt.Fprintf(w, "\tTranscript: %v\n", alternative.GetTranscript())
			fmt.Fprintf(w, "\tConfidence: %v\n", alternative.GetConfidence())

			fmt.Fprintf(w, "Word level information:\n")
			for _, wordInfo := range alternative.GetWords() {
				startTime := wordInfo.GetStartTime()
				endTime := wordInfo.GetEndTime()
				fmt.Fprintf(w, "\t%4.1f - %4.1f: %v (speaker %v)\n",
					float64(startTime.GetSeconds())+float64(startTime.GetNanos())*1e-9, // start as seconds
					float64(endTime.GetSeconds())+float64(endTime.GetNanos())*1e-9,     // end as seconds
					wordInfo.GetWord(),
					wordInfo.GetSpeakerTag())
			}
		}
	}

	return nil
}

Java

Untuk mengautentikasi ke Video Intelligence, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

// Instantiate a com.google.cloud.videointelligence.v1.VideoIntelligenceServiceClient
try (VideoIntelligenceServiceClient client = VideoIntelligenceServiceClient.create()) {
  // Set the language code
  SpeechTranscriptionConfig config =
      SpeechTranscriptionConfig.newBuilder()
          .setLanguageCode("en-US")
          .setEnableAutomaticPunctuation(true)
          .build();

  // Set the video context with the above configuration
  VideoContext context = VideoContext.newBuilder().setSpeechTranscriptionConfig(config).build();

  // Create the request
  AnnotateVideoRequest request =
      AnnotateVideoRequest.newBuilder()
          .setInputUri(gcsUri)
          .addFeatures(Feature.SPEECH_TRANSCRIPTION)
          .setVideoContext(context)
          .build();

  // asynchronously perform speech transcription on videos
  OperationFuture<AnnotateVideoResponse, AnnotateVideoProgress> response =
      client.annotateVideoAsync(request);

  System.out.println("Waiting for operation to complete...");
  // Display the results
  for (VideoAnnotationResults results :
      response.get(600, TimeUnit.SECONDS).getAnnotationResultsList()) {
    for (SpeechTranscription speechTranscription : results.getSpeechTranscriptionsList()) {
      try {
        // Print the transcription
        if (speechTranscription.getAlternativesCount() > 0) {
          SpeechRecognitionAlternative alternative = speechTranscription.getAlternatives(0);

          System.out.printf("Transcript: %s\n", alternative.getTranscript());
          System.out.printf("Confidence: %.2f\n", alternative.getConfidence());

          System.out.println("Word level information:");
          for (WordInfo wordInfo : alternative.getWordsList()) {
            double startTime =
                wordInfo.getStartTime().getSeconds() + wordInfo.getStartTime().getNanos() / 1e9;
            double endTime =
                wordInfo.getEndTime().getSeconds() + wordInfo.getEndTime().getNanos() / 1e9;
            System.out.printf(
                "\t%4.2fs - %4.2fs: %s\n", startTime, endTime, wordInfo.getWord());
          }
        } else {
          System.out.println("No transcription found");
        }
      } catch (IndexOutOfBoundsException ioe) {
        System.out.println("Could not retrieve frame: " + ioe.getMessage());
      }
    }
  }
}

Node.js

Untuk mengautentikasi ke Video Intelligence, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

// Imports the Google Cloud Video Intelligence library
const videoIntelligence = require('@google-cloud/video-intelligence');

// Creates a client
const client = new videoIntelligence.VideoIntelligenceServiceClient();

/**
 * TODO(developer): Uncomment the following line before running the sample.
 */
// const gcsUri = 'GCS URI of video to analyze, e.g. gs://my-bucket/my-video.mp4';

async function analyzeVideoTranscript() {
  const videoContext = {
    speechTranscriptionConfig: {
      languageCode: 'en-US',
      enableAutomaticPunctuation: true,
    },
  };

  const request = {
    inputUri: gcsUri,
    features: ['SPEECH_TRANSCRIPTION'],
    videoContext: videoContext,
  };

  const [operation] = await client.annotateVideo(request);
  console.log('Waiting for operation to complete...');
  const [operationResult] = await operation.promise();
  // There is only one annotation_result since only
  // one video is processed.
  const annotationResults = operationResult.annotationResults[0];

  for (const speechTranscription of annotationResults.speechTranscriptions) {
    // The number of alternatives for each transcription is limited by
    // SpeechTranscriptionConfig.max_alternatives.
    // Each alternative is a different possible transcription
    // and has its own confidence score.
    for (const alternative of speechTranscription.alternatives) {
      console.log('Alternative level information:');
      console.log(`Transcript: ${alternative.transcript}`);
      console.log(`Confidence: ${alternative.confidence}`);

      console.log('Word level information:');
      for (const wordInfo of alternative.words) {
        const word = wordInfo.word;
        const start_time =
          wordInfo.startTime.seconds + wordInfo.startTime.nanos * 1e-9;
        const end_time =
          wordInfo.endTime.seconds + wordInfo.endTime.nanos * 1e-9;
        console.log('\t' + start_time + 's - ' + end_time + 's: ' + word);
      }
    }
  }
}

analyzeVideoTranscript();

PHP

Untuk mengautentikasi ke Video Intelligence, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

use Google\Cloud\VideoIntelligence\V1\AnnotateVideoRequest;
use Google\Cloud\VideoIntelligence\V1\Client\VideoIntelligenceServiceClient;
use Google\Cloud\VideoIntelligence\V1\Feature;
use Google\Cloud\VideoIntelligence\V1\SpeechTranscriptionConfig;
use Google\Cloud\VideoIntelligence\V1\VideoContext;

/**
 * @param string $uri The cloud storage object to analyze (gs://your-bucket-name/your-object-name)
 * @param int $pollingIntervalSeconds
 */
function analyze_transcription(string $uri, int $pollingIntervalSeconds = 0)
{
    # set configs
    $speechTranscriptionConfig = (new SpeechTranscriptionConfig())
        ->setLanguageCode('en-US')
        ->setEnableAutomaticPunctuation(true);
    $videoContext = (new VideoContext())
        ->setSpeechTranscriptionConfig($speechTranscriptionConfig);

    # instantiate a client
    $client = new VideoIntelligenceServiceClient();

    # execute a request.
    $features = [Feature::SPEECH_TRANSCRIPTION];
    $request = (new AnnotateVideoRequest())
        ->setInputUri($uri)
        ->setVideoContext($videoContext)
        ->setFeatures($features);
    $operation = $client->annotateVideo($request);

    print('Processing video for speech transcription...' . PHP_EOL);
    # Wait for the request to complete.
    $operation->pollUntilComplete([
        'pollingIntervalSeconds' => $pollingIntervalSeconds
    ]);

    # Print the result.
    if ($operation->operationSucceeded()) {
        $result = $operation->getResult();
        # there is only one annotation_result since only
        # one video is processed.
        $annotationResults = $result->getAnnotationResults()[0];
        $speechTranscriptions = $annotationResults ->getSpeechTranscriptions();

        foreach ($speechTranscriptions as $transcription) {
            # the number of alternatives for each transcription is limited by
            # $max_alternatives in SpeechTranscriptionConfig
            # each alternative is a different possible transcription
            # and has its own confidence score.
            foreach ($transcription->getAlternatives() as $alternative) {
                print('Alternative level information' . PHP_EOL);

                printf('Transcript: %s' . PHP_EOL, $alternative->getTranscript());
                printf('Confidence: %s' . PHP_EOL, $alternative->getConfidence());

                print('Word level information:');
                foreach ($alternative->getWords() as $wordInfo) {
                    printf(
                        '%s s - %s s: %s' . PHP_EOL,
                        $wordInfo->getStartTime()->getSeconds(),
                        $wordInfo->getEndTime()->getSeconds(),
                        $wordInfo->getWord()
                    );
                }
            }
        }
    }
    $client->close();
}

Python

Untuk mengautentikasi ke Video Intelligence, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

"""Transcribe speech from a video stored on GCS."""
from google.cloud import videointelligence

video_client = videointelligence.VideoIntelligenceServiceClient()
features = [videointelligence.Feature.SPEECH_TRANSCRIPTION]

config = videointelligence.SpeechTranscriptionConfig(
    language_code="en-US", enable_automatic_punctuation=True
)
video_context = videointelligence.VideoContext(speech_transcription_config=config)

operation = video_client.annotate_video(
    request={
        "features": features,
        "input_uri": path,
        "video_context": video_context,
    }
)

print("\nProcessing video for speech transcription.")

result = operation.result(timeout=600)

# There is only one annotation_result since only
# one video is processed.
annotation_results = result.annotation_results[0]
for speech_transcription in annotation_results.speech_transcriptions:
    # The number of alternatives for each transcription is limited by
    # SpeechTranscriptionConfig.max_alternatives.
    # Each alternative is a different possible transcription
    # and has its own confidence score.
    for alternative in speech_transcription.alternatives:
        print("Alternative level information:")

        print("Transcript: {}".format(alternative.transcript))
        print("Confidence: {}\n".format(alternative.confidence))

        print("Word level information:")
        for word_info in alternative.words:
            word = word_info.word
            start_time = word_info.start_time
            end_time = word_info.end_time
            print(
                "\t{}s - {}s: {}".format(
                    start_time.seconds + start_time.microseconds * 1e-6,
                    end_time.seconds + end_time.microseconds * 1e-6,
                    word,
                )
            )

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