Is there software to author a totally new PGS (.sup) subtitle file?

[RasterEyes]

There's tons of stuff to convert PGS to other formats, based on parsing text and converting to SRT and other formats, but that's not what I want.

I don't want to edit an existing PGS subtitle file either.

I want to create my own totally new PGS subtitle file with my own images in it. If there's software out there to do this, my googling skills aren't up to the task of filtering out the mountains of search results that are most definitely NOT what I want.

I'd settle for any other graphic-based format that works with VLC and Handbrake. I tried using an ASS subtitle file, but both of those pieces of software choke on that.

[cibo]

"My own images"? Do you want to embed custom graphics in the subtitles? Or you just meant a PGS generated by yourself?

Anyhow you have two options, depending of the complexity of your subtitles:
- SubtitleEdit, for basic ASS/SRT files where there are no overlapping timing and no custom elements like drawings.
- ass2bdnxml + SUPer, for every other cases, including very complex ASS files.