如何使用nodejs获取gif图片帧的base64？

npm init -y

npm install gif-encoder fs

const fs = require('fs');
const { GifDecoder } = require('gif-encoder');

function getGifFrames(filePath) {
  return new Promise((resolve, reject) => {
    const gifData = fs.readFileSync(filePath);
    const gifDecoder = new GifDecoder(gifData);

    const frames = [];

    gifDecoder.on('frame', (frame) => {
      const canvas = document.createElement('canvas');
      canvas.width = frame.width;
      canvas.height = frame.height;
      const ctx = canvas.getContext('2d');
      ctx.drawImage(frame.getImage(), 0, 0);

      const base64 = canvas.toDataURL('image/gif');
      frames.push(base64);
    });

    gifDecoder.on('end', () => {
      resolve(frames);
    });

    gifDecoder.on('error', (error) => {
      reject(error);
    });

    gifDecoder.start();
  });
}

const gifFilePath = 'path/to/your/gif/file.gif';

getGifFrames(gifFilePath)
  .then((frames) => {
    console.log(frames); // 打印所有帧的base64数据
  })
  .catch((error) => {
    console.error(error);
  });