const fs = require('fs'); const { createFFmpeg, fetchFile } = require('../../src'); const ffmpeg = createFFmpeg({ log: true }); (async () => { await ffmpeg.load(); ffmpeg.FS('writeFile', 'flame.avi', await fetchFile('../assets/flame.avi')); await ffmpeg.run('-i', 'flame.avi', '-i', 'flame.avi', '-filter_complex', 'hstack', 'flame.mp4'); await fs.promises.writeFile('flame.mp4', ffmpeg.FS('readFile', 'flame.mp4')); process.exit(0); })();