EBU STL Convert

The goal of this project is to convert an EBU STL (Tech 3264) binary file and produce equavalent web centric captioning formats.

Outptut formats supported:

• TTML text captions using regions for vertical placement and in-line text colour styling with spans
• WebVTT with vertical placement and colour support using cue::color styling

STL2TTML Options:

 -f | -file              STL file to process
 -o | -offset            number of seconds to add to the STL timing
 -t | -ttml              Create TTML file
 -v | -vtt               Create VTT file
-ns | -no-vtt-styling    Disable all VTT Styling
 -l | -log-level         Logging level > 0 to produce output

References

• https://tech.ebu.ch/docs/tech/tech3264.pdf
• https://tech.ebu.ch/docs/tech/tech3360.pdf
• https://tech.ebu.ch/docs/tech/tech3380.pdf