There are lots of options to convert audio/video file for free. We recommend Any Video Converter; it’s simple and reliable and you can download it here.
Create a downloadable file from YouTube, Facebook or Vimeo with Any Video Converter
2. Click the ‘Add URL(s)’ button from the menu.
3. Copy and paste your URL(s) using either Ctrl + V or hitting the green plus icon and right clicking to choose Paste.
4. Hit Start Download.
5. Once the conversion is finished, you can upload your files to the Portal. 😊