使用 Gemini Omni Flash 生成和编辑视频

Gemini Omni Flash (gemini-omni-1.1-flash) 是一款高性能多模态模型，专为高速视频生成、编辑和电影级控制而设计。Gemini Omni 基于以下核心功能构建而成，这使其有别于之前的视频模型：

原生多模态：可同时处理文本、图片、音频和视频，为您提供更连贯、一致且可控的输出。
对话式编辑：通过 Interactions API 实现，让您可以通过自然语言对话迭代优化和编辑视频。描述您想要更改的内容，模型会应用相应编辑，同时保留您想要保留的视频部分。
世界知识：Gemini Omni 将对物理的理解与 Gemini 在历史、科学和文化背景方面的知识相结合，弥合了从照片写实主义到有意义的故事讲述之间的差距。

文生视频

根据文本提示生成视频。模型会根据您的文字说明生成包含音频的视频。撰写提示时，请添加场景描述、镜头移动、光效和氛围等详细信息，以便获得最佳效果。

Python

import base64
from google import genai

client = genai.Client()

interaction = client.interactions.create(
    model="gemini-omni-1.1-flash",
    input="A marble rolling fast on a chain reaction style track, continuous smooth shot."
)
with open("marble.mp4", "wb") as f:
    f.write(base64.b64decode(interaction.output_video.data))

JavaScript

import { GoogleGenAI } from '@google/genai';
import * as fs from 'fs';
const ai = new GoogleGenAI({});

const interaction = await ai.interactions.create({
  model: 'gemini-omni-1.1-flash',
  input: 'A marble rolling fast on a chain reaction style track, continuous smooth shot.',
});

if (interaction.output_video?.data) {
  fs.writeFileSync('marble.mp4', Buffer.from(interaction.output_video.data, 'base64'));
}

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;

Client client = new Client();

CreateModelInteraction params =
    CreateModelInteraction.builder()
        .model(Model.of("gemini-omni-1.1-flash"))
        .input(InteractionsInput.of("A marble rolling fast on a chain reaction style track, continuous smooth shot."))
        .build();

Interaction interaction =
    client.interactions.create(CreateInteractionRequestBody.of(params)).interaction().get();

if (interaction.outputVideo().isPresent() && interaction.outputVideo().get().data().isPresent()) {
    byte[] videoBytes = Base64.getDecoder().decode(interaction.outputVideo().get().data().get());
    Files.write(Paths.get("marble.mp4"), videoBytes);
}

REST

curl -X POST "https://generativelanguage.googleapis.com/v1beta/interactions?key=$API_KEY" \
-H "Content-Type: application/json" \
-d '{
 "model": "gemini-omni-1.1-flash",
 "input": "A marble rolling fast on a chain reaction style track, continuous smooth shot."
}'

REST 响应 schema

便捷字段 interaction.output_video 仅适用于 SDK。直接使用 REST API 时，从 steps 数组获取视频输出。

原始 REST JSON 结构：

{
  "steps": [
    { "type": "user_input", "content": [{"type": "text", "text": "..."}] },
    { "type": "thought", "content": [{"text": "...", "type": "thought"}] },
    {
      "type": "model_output",
      "content": [
        {
          "type": "video",
          "mime_type": "video/mp4",
          "data": "AAAAIGZ0eXBpc29t..." // Base64 encoded video data
        }
      ]
    }
  ],
  "id": "v1_...",
  "status": "completed",
  "model": "gemini-omni-1.1-flash",
  "object": "interaction"
}

控制宽高比

将aspect_ratio设置为 "9:16"，即可创建竖屏视频。横向 (16:9) 是默认设置。

Python

import base64
from google import genai

client = genai.Client()

interaction = client.interactions.create(
    model="gemini-omni-1.1-flash",
    input="A futuristic city with neon lights and flying cars, cyberpunk style",
    response_format={
        "type": "video",  # optional
        "aspect_ratio": "9:16"  # Supported values: "9:16", "16:9"
    }
)
with open("example.mp4", "wb") as f:
    f.write(base64.b64decode(interaction.output_video.data))

JavaScript

import { GoogleGenAI } from '@google/genai';
import * as fs from 'fs';
const ai = new GoogleGenAI({});

const interaction = await ai.interactions.create({
  model: 'gemini-omni-1.1-flash',
  input: 'A futuristic city with neon lights and flying cars, cyberpunk style',
  response_format: {
    type: 'video', // optional
    aspect_ratio: '9:16' // Supported values: '9:16', '16:9'
  },
});

if (interaction.output_video?.data) {
  fs.writeFileSync('example.mp4', Buffer.from(interaction.output_video.data, 'base64'));
}

Java

import com.google.genai.Client;
import com.google.genai.gaos.models.interactions.CreateModelInteraction;
import com.google.genai.gaos.models.interactions.CreateModelInteractionResponseFormat;
import com.google.genai.gaos.models.interactions.Interaction;
import com.google.genai.gaos.models.interactions.InteractionsInput;
import com.google.genai.gaos.models.interactions.Model;
import com.google.genai.gaos.models.interactions.ResponseFormat;
import com.google.genai.gaos.models.interactions.VideoResponseFormat;
import com.google.genai.gaos.models.interactions.VideoResponseFormatAspectRatio;
import com.google.genai.gaos.models.operations.CreateInteractionRequestBody;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;

Client client = new Client();

VideoResponseFormat videoFormat =
    VideoResponseFormat.builder()
        .aspectRatio(VideoResponseFormatAspectRatio.