Change
Video subtitle specifications revised.
Initially, it was announced that a complete specification change would be released in late October, but it has been changed to a phased release to prevent issues where subtitles do not appear in customer environments.
Please check the related links for details.
Related: Major Video Subtitle Update! Translation & dual-language display ! | Rolling out starting October 22, 2025
https://help.teachme.jp/hc/en-us/articles/50901644321945