Code for post "How to automatically create thumbnails for your videos with Node.js"

how-to-automatically-create-thumbnails-for-your-videos-with-node.js-script-2.js

const generateImageForPost = async (
  backgroundImagePath,
  foregroundImagePath,
  title,
  outputPath
) => {
  const backgroundImage = await loadImage(backgroundImagePath);
  const foregroundImage = await loadImage(foregroundImagePath);

  const canvas = createCanvas(backgroundImage.width, backgroundImage.height);
  const ctx = canvas.getContext('2d');

  ctx.drawImage(foregroundImage, 0, 0);

  // TODO add text
  // addCenteredTextWithBackground(ctx, title, canvas.width, canvas.height);

  await new Promise((resolve, reject) => {
    const out = createWriteStream(outputPath);
    const stream = canvas.createPNGStream();
    stream.pipe(out);

    out.on('finish', () => {
      console.log('The PNG file was created.');
      resolve();
    });

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