ript type="text/javascript">
      const message = document.getElementById('message');
      const transcode = async ({ target: { files } }) => {
        const IN_FILE_NAME = 'video.avi';
        const OUT_FILE_NAME = 'video.mkv';
        const args = ['-i', IN_FILE_NAME, '-c:v', 'libaom-av1', '-crf', '48', '-b:v', '0' , '-strict', 'experimental', '-tiles', '2x2', '-row-mt', '1', OUT_FILE_NAME];
        message.innerHTML = 'Writing file to MEMFS';
        const data = new Uint8Array(await readFromBlobOrFile