Note that it is not sufficient to have the latest stable releases of the GStreamer modules installed; you must use the git masters, as the TTML subtitling elements depend upon recent additions that ...

I'm trying to add TTML subtitles to the MPEG-DASH stream. I'm adding consequently mp4 files with embedded TTML subtitles. GPAC version 2.5-DEV-rev337-g9674ae8d6-master TTML file is here. I am ...