HandBrake will convert closed captions and subtitle tracks to ASS format.
The behavior is "intentional", but undesirable.
https://forum.handbrake.fr/viewtopic.php?f=6&t=34522&p=161536
Issue is tracked here.
HandBrake/HandBrake#160
As workaround run handbrake with no subtitles in output, and then remux subtitles back in.
HandBrake will convert closed captions and subtitle tracks to ASS format.
The behavior is "intentional", but undesirable.
https://forum.handbrake.fr/viewtopic.php?f=6&t=34522&p=161536
Issue is tracked here.
HandBrake/HandBrake#160
As workaround run handbrake with no subtitles in output, and then remux subtitles back in.