nodejs如何将图片转成视频

npm install jimp

const fs = require('fs');
const { exec } = require('child_process');
const Jimp = require('jimp');

const imageFolderPath = './images/';
const outputFileName = './output.mp4';

const getFiles = () => {
  return new Promise((resolve, reject) => {
    fs.readdir(imageFolderPath, (err, files) => {
      if (err) {
        reject(err);
      }
      resolve(files);
    })
  })
}

const getImageData = (filePath) => {
  return new Promise((resolve, reject) => {
    Jimp.read(filePath, (err, image) => {
      if (err) {
        reject(err);
      }
      resolve(image.bitmap.data);
    });
  });
}

const convertImagesToVideo = async () => {
  const files = await getFiles();

  let imageDataArray = [];
  let maxWidth = 0;
  let maxHeight = 0;

  // Read all image files and collect image data and dimensions
  for (let i = 0; i < files.length; i++) {
    const file = files[i];
    const filePath = `${imageFolderPath}${file}`;
    const imageData = await getImageData(filePath);
    const image = await Jimp.read(filePath);

    maxWidth = Math.max(maxWidth, image.bitmap.width);
    maxHeight = Math.max(maxHeight, image.bitmap.height);

    imageDataArray.push(imageData);
  }

  // Combine all image data into a single Buffer
  const buffer = Buffer.concat(imageDataArray);

  // Use FFmpeg to generate the output video file
  const ffmpegCommand = `-y -f rawvideo -pixel_format rgba -video_size ${maxWidth}x${maxHeight} -framerate 30 -i - -c:v h264 ${outputFileName}`;
  const ffmpegProcess = exec(`echo '${buffer.toString()}' | ffmpeg ${ffmpegCommand}`);

  ffmpegProcess.stderr.on('data', (data) => {
    console.log(`stderr: ${data}`);
  });

  ffmpegProcess.on('close', (code) => {
    console.log(`child process exited with code ${code}`);
  });
}

convertImagesToVideo();