image-video-watermark

This module allows you to add watermarks to images or videos using Node.js.

Installation

Make sure you have Node.js installed (version 10 or above) and FFmpeg installed on your system.

npm install image-video-watermark

Or

yarn add image-video-watermark

Usage

import addWatermark from 'image-video-watermark';

// Path to the original file
const inputPath = './path/to/input/file';

// Path to the watermark image
const watermarkPath = './path/to/watermark/image.png';

// Optional options
const options = {
  position: 'bottom-right', // Watermark position ('top-right', 'bottom-right', 'top-left', 'bottom-left')
  margin: 20, // Margin between watermark and video/image edge (default is 10)
  opacity: 0.7, // Opacity of the watermark (value between 0 and 1, default is 0.5)
  watermarkScalePercentage: 15 // Percentage scale of the watermark (default is 10)
};

// Adding watermark to image or video
(async () => {
  try {
    const result = await addWatermark(inputPath, watermarkPath, options);
    console.log('Watermark added successfully:', result);
  } catch (error) {
    console.error('Error adding watermark:', error);
  }
})();

System Requirements

• Node.js 10 or above.
• FFmpeg installed on your system.

Example with Telegraf

import { Telegraf } from 'telegraf';
import addWatermark from 'image-video-watermark';

const bot = new Telegraf('YOUR_BOT_TOKEN');

bot.on('document', async (ctx) => {
  const fileId = ctx.message.document.file_id;
  const watermarkPath = './path/to/watermark/image.png';

  try {
    const file = await ctx.telegram.getFile(fileId);
    const inputPath = `https://api.telegram.org/file/bot${bot.token}/${file.file_path}`;

    const options = {
      position: 'bottom-right',
      margin: 20,
      opacity: 0.7,
      watermarkScalePercentage: 15
    };

    const result = await addWatermark(inputPath, watermarkPath, options);
    console.log('Watermark added to Telegram file:', result);

    // Send the watermarked file back to user
    await ctx.replyWithDocument({ source: result.buffer });
  } catch (error) {
    console.error('Error processing Telegram file:', error);
  }
});

bot.launch();

Example with Express

import express from 'express';
import multer from 'multer';
import addWatermark from 'image-video-watermark';

const app = express();
const upload = multer({ dest: 'uploads/' });

app.post('/upload', upload.single('file'), async (req, res) => {
  const inputPath = req.file.path;
  const watermarkPath = './path/to/watermark/image.png';

  try {
    const options = {
      position: 'bottom-right',
      margin: 20,
      opacity: 0.7,
      watermarkScalePercentage: 15
    };

    const result = await addWatermark(inputPath, watermarkPath, options);
    console.log('Watermark added to uploaded file:', result);

    res.set('Content-Type', 'image/jpeg');
    res.send(result.buffer);
  } catch (error) {
    console.error('Error processing uploaded file:', error);
    res.status(500).send('Error processing file');
  }
});

app.listen(3000, () => {
  console.log('Server is running on http://localhost:3000');
});

Contributing

If you would like to contribute to this project, please fork the repository and open a pull request.

Support

If you encounter any issues or have questions, please open an issue on GitHub issues.

License

This project is licensed under the MIT License.

Make sure to replace './path/to/input/file' and './path/to/watermark/image.png' with actual paths to your input file and watermark image respectively.