マルチモーダル AI モデルで音声ファイルの文字起こしを行う
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必要に応じて、コンテンツの保存と分類を行います。
このサンプルでは、音声ファイルを使用して、タイムスタンプ付きでポッドキャストの文字起こしを行う方法について説明します。
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このコードサンプルを含む詳細なドキュメントについては、以下をご覧ください。
コードサンプル
特に記載のない限り、このページのコンテンツはクリエイティブ・コモンズの表示 4.0 ライセンスにより使用許諾されます。コードサンプルは Apache 2.0 ライセンスにより使用許諾されます。詳しくは、Google Developers サイトのポリシーをご覧ください。Java は Oracle および関連会社の登録商標です。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],[],[],[],null,["# Transcript an audio file with Multimodal AI Model\n\nThis sample shows you how to use an audio file to generate a podcast transcript with timestamps.\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Audio understanding (speech only)](/vertex-ai/generative-ai/docs/multimodal/audio-understanding)\n\nCode sample\n-----------\n\n### Go\n\n\nBefore trying this sample, follow the Go setup instructions in the\n[Vertex AI quickstart using\nclient libraries](/vertex-ai/docs/start/client-libraries).\n\n\nFor more information, see the\n[Vertex AI Go API\nreference documentation](/go/docs/reference/cloud.google.com/go/aiplatform/latest/apiv1).\n\n\nTo authenticate to Vertex AI, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n import (\n \t\"context\"\n \t\"fmt\"\n \t\"io\"\n\n \tgenai \"google.golang.org/genai\"\n )\n\n // generateAudioTranscript shows how to generate an audio transcript.\n func generateAudioTranscript(w io.Writer) error {\n \tctx := context.Background()\n\n \tclient, err := genai.NewClient(ctx, &genai.ClientConfig{\n \t\tHTTPOptions: genai.HTTPOptions{APIVersion: \"v1\"},\n \t})\n \tif err != nil {\n \t\treturn fmt.Errorf(\"failed to create genai client: %w\", err)\n \t}\n\n \tmodelName := \"gemini-2.5-flash\"\n \tcontents := []*genai.Content{\n \t\t{Parts: []*genai.Part{\n \t\t\t{Text: `Transcribe the interview, in the format of timecode, speaker, caption.\n Use speaker A, speaker B, etc. to identify speakers.`},\n \t\t\t{FileData: &genai.FileData{\n \t\t\t\tFileURI: \"gs://cloud-samples-data/generative-ai/audio/pixel.mp3\",\n \t\t\t\tMIMEType: \"audio/mpeg\",\n \t\t\t}},\n \t\t},\n \t\t\tRole: \"user\"},\n \t}\n\n \tresp, err := client.Models.GenerateContent(ctx, modelName, contents, nil)\n \tif err != nil {\n \t\treturn fmt.Errorf(\"failed to generate content: %w\", err)\n \t}\n\n \trespText := resp.Text()\n\n \tfmt.Fprintln(w, respText)\n\n \t// Example response:\n \t// 00:00:00, A: your devices are getting better over time.\n \t// 00:01:13, A: And so we think about it across the entire portfolio from phones to watch, ...\n \t// ...\n\n \treturn nil\n }\n\n### Python\n\n\nBefore trying this sample, follow the Python setup instructions in the\n[Vertex AI quickstart using\nclient libraries](/vertex-ai/docs/start/client-libraries).\n\n\nFor more information, see the\n[Vertex AI Python API\nreference documentation](/python/docs/reference/aiplatform/latest).\n\n\nTo authenticate to Vertex AI, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n from google import genai\n from google.genai.types import GenerateContentConfig, HttpOptions, Part\n\n client = genai.Client(http_options=HttpOptions(api_version=\"v1\"))\n prompt = \"\"\"\n Transcribe the interview, in the format of timecode, speaker, caption.\n Use speaker A, speaker B, etc. to identify speakers.\n \"\"\"\n response = client.models.generate_content(\n model=\"gemini-2.5-flash\",\n contents=[\n prompt,\n Part.from_uri(\n file_uri=\"gs://cloud-samples-data/generative-ai/audio/pixel.mp3\",\n mime_type=\"audio/mpeg\",\n ),\n ],\n # Required to enable timestamp understanding for audio-only files\n config=GenerateContentConfig(audio_timestamp=True),\n )\n print(response.text)\n # Example response:\n # [00:00:00] **Speaker A:** your devices are getting better over time. And so ...\n # [00:00:14] **Speaker B:** Welcome to the Made by Google podcast where we meet ...\n # [00:00:20] **Speaker B:** Here's your host, Rasheed Finch.\n # [00:00:23] **Speaker C:** Today we're talking to Aisha Sharif and DeCarlos Love. ...\n # ...\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=googlegenaisdk)."]]