Is it possible to add styling using ffmpeg?

[iKron]

Is it possible to add styling subtitle in .srt subtitle using ffmpeg. example:

1
00:01:27,134 --> 00:01:29,553
<font face="arial" size="18"><i>When I was a child, I told my mother</i></font>

2
00:01:29,636 --> 00:01:32,764
<font face="arial" size="18"><i>I wanted to learn every planet
in the Galactic Empire…</i></font>

[Ai Haibara]

Not that I'm aware of. You'll generally need a subtitle editor for that.

Note that the use of HTML tags in SRT subtitles isn't an official part of the SRT subtitle format, so support for them in any given program or hardware player may be minimal or inconsistent.