使用多模态 AI 模型转写音频文件

此示例展示了如何使用音频文件生成带有时间戳的播客转写内容。

深入探索

如需查看包含此代码示例的详细文档，请参阅以下内容：

代码示例

Go

在尝试此示例之前，请按照《Vertex AI 快速入门：使用客户端库》中的 Go 设置说明执行操作。 如需了解详情，请参阅 Vertex AI Go API 参考文档。

如需向 Vertex AI 进行身份验证，请设置应用默认凭证。 如需了解详情，请参阅为本地开发环境设置身份验证。 

import (
	"context"
	"fmt"
	"io"

	genai "google.golang.org/genai"
)

// generateAudioTranscript shows how to generate an audio transcript.
func generateAudioTranscript(w io.Writer) error {
	ctx := context.Background()

	client, err := genai.NewClient(ctx, &genai.ClientConfig{
		HTTPOptions: genai.HTTPOptions{APIVersion: "v1"},
	})
	if err != nil {
		return fmt.Errorf("failed to create genai client: %w", err)
	}

	modelName := "gemini-2.5-flash"
	contents := []*genai.Content{
		{Parts: []*genai.Part{
			{Text: `Transcribe the interview, in the format of timecode, speaker, caption.
Use speaker A, speaker B, etc. to identify speakers.`},
			{FileData: &genai.FileData{
				FileURI:  "gs://cloud-samples-data/generative-ai/audio/pixel.mp3",
				MIMEType: "audio/mpeg",
			}},
		},
			Role: "user"},
	}

	resp, err := client.Models.GenerateContent(ctx, modelName, contents, nil)
	if err != nil {
		return fmt.Errorf("failed to generate content: %w", err)
	}

	respText := resp.Text()

	fmt.Fprintln(w, respText)

	// Example response:
	// 00:00:00, A: your devices are getting better over time.
	// 00:01:13, A: And so we think about it across the entire portfolio from phones to watch, ...
	// ...

	return nil
}

Node.js

在尝试此示例之前，请按照《Vertex AI 快速入门：使用客户端库》中的 Node.js 设置说明执行操作。 如需了解详情，请参阅 Vertex AI Node.js API 参考文档。

如需向 Vertex AI 进行身份验证，请设置应用默认凭证。 如需了解详情，请参阅为本地开发环境设置身份验证。 

const {GoogleGenAI} = require('@google/genai');

const GOOGLE_CLOUD_PROJECT = process.env.GOOGLE_CLOUD_PROJECT;
const GOOGLE_CLOUD_LOCATION = process.env.GOOGLE_CLOUD_LOCATION || 'global';

async function generateText(
  projectId = GOOGLE_CLOUD_PROJECT,
  location = GOOGLE_CLOUD_LOCATION
) {
  const client = new GoogleGenAI({
    vertexai: true,
    project: projectId,
    location: location,
  });

  const prompt = `Transcribe the interview, in the format of timecode, speaker, caption.
    Use speaker A, speaker B, etc. to identify speakers.`;

  const response = await client.models.generateContent({
    model: 'gemini-2.5-flash',
    contents: [
      {text: prompt},
      {
        fileData: {
          fileUri: 'gs://cloud-samples-data/generative-ai/audio/pixel.mp3',
          mimeType: 'audio/mpeg',
        },
      },
    ],
    // Required to enable timestamp understanding for audio-only files
    config: {
      audioTimestamp: true,
    },
  });

  console.log(response.text);

  // Example response:
  // [00:00:00] **Speaker A:** your devices are getting better over time. And so ...
  // [00:00:14] **Speaker B:** Welcome to the Made by Google podcast where we meet ...
  // [00:00:20] **Speaker B:** Here's your host, Rasheed Finch.
  // [00:00:23] **Speaker C:** Today we're talking to Aisha Sharif and DeCarlos Love. ...
  // ...

  return response.text;
}

Python

在尝试此示例之前，请按照《Vertex AI 快速入门：使用客户端库》中的 Python 设置说明执行操作。 如需了解详情，请参阅 Vertex AI Python API 参考文档。

如需向 Vertex AI 进行身份验证，请设置应用默认凭证。 如需了解详情，请参阅为本地开发环境设置身份验证。 

from google import genai
from google.genai.types import GenerateContentConfig, HttpOptions, Part

client = genai.Client(http_options=HttpOptions(api_version="v1"))
prompt = """
Transcribe the interview, in the format of timecode, speaker, caption.
Use speaker A, speaker B, etc. to identify speakers.
"""
response = client.models.generate_content(
    model="gemini-2.5-flash",
    contents=[
        prompt,
        Part.from_uri(
            file_uri="gs://cloud-samples-data/generative-ai/audio/pixel.mp3",
            mime_type="audio/mpeg",
        ),
    ],
    # Required to enable timestamp understanding for audio-only files
    config=GenerateContentConfig(audio_timestamp=True),
)
print(response.text)
# Example response:
# [00:00:00] **Speaker A:** your devices are getting better over time. And so ...
# [00:00:14] **Speaker B:** Welcome to the Made by Google podcast where we meet ...
# [00:00:20] **Speaker B:** Here's your host, Rasheed Finch.
# [00:00:23] **Speaker C:** Today we're talking to Aisha Sharif and DeCarlos Love. ...
# ...

后续步骤

如需搜索和过滤其他 Google Cloud 产品的代码示例，请参阅Google Cloud 示例浏览器。