Support for harfbuzz complex shaper into libass

[nofaceanime]

Is your feature request related to a problem? Please describe.
I am using flutter-ffmpeg for hardcoding subtitle file into video. Issue is i have arabic text and when i burn subtitle to video, it just shows blank rectangles. I checked with other languages too like chinese, thai, indic languages, and same issue happens everywhere.

Describe the solution you'd like
Fribidi is just a simple shaper, it can't handle complex languages. Harfbuzz support is really needed in ffmpeg-kit for libass library.
Fribidi is just good for latin text, but non latin languages looks totally scrambled or just appears blank rectangles or nothing at all. Few characters do appear but it makes no sense to watch anything at all. If possible, could you add harfbuzz support to ffmpeg-kit in the libass library ?

Describe alternatives you've considered
Currently i dont have any alternative solution for this.

Platform
its a general feature that can be added which will support all platforms, but basically i need it for android and ios currently.

[tanersener]

ffmpeg-kit already supports harfbuzz. But the flutter plugin of ffmpeg-kit is not released yet. When it is published you will be able to use harfbuzz.

[nofaceanime]

Oh thats great, hopefully flutter plugin for ffmpeg-kit is released soon. will be looking forward to it.

[tungnddev]

I have the same issue, with Android. I used ffmpeg-kit-full-gpl:4.4.LTS. After executing, my video gets only many squares in the sub line :)) Can you recheck it for me?

[tanersener]

This is fixed in v4.5.0 release.