Assessing VSFilter for ASS Rendering
I just had a kind of Epiphany.... 😉
Seems I've done too much x-platform work in the past years. I notice that I've even assimilated the habit to rule out platform-specific or worse: Windows-specific solutions - would have never happened earlier.
So - the point is: there's another ASS rendering implementation which is generally considered equal to libass (even though there are some differences and some may disagree on both sides). The de-facto-standard authoring tool for ASS subs is Aegisub. And Aegisub allows to switch rendering betwen the two, while VSFilter is the default.
What is is? It's a DirectShow filter, development has ceased long ago, but there are several forks of it still alive.
Is it suitable for us? I absolutely can't say that. Haven't thought about it neither looked at it.
But it's definitely worth to take a quick look and think about it once.