1. Use the "Subtitle Tool & Converter" to convert a STL EBU subtitle file into a TTML subtitle file
Open the free Subtitle Tool & Converter, select "STL EBU" and set "convert" to "TTML". Generate and download the file. If you have problems converting the file, you can contact the free support.
Thats it. If the tutorial helped you, please share it and support us on Buy Me A Coffee. And if you have any ideas to improve the workflow even more, let us know!