I use Subler mostly as a metadata acquisition and injector tool, and secondarily as a M4V remux sanitiser. The subtitles function is more a subset of its stream management, and is much less relevant than its name implies. That said, it does do a very competent job at converting, through OCR, DVD and BluRay bitmap subtitles to ASCII variants required for MP4 containers.

I think it only works in macOS, which makes it difficult to understand its purpose when you don’t have that platform readily available. Ideally it would have a CLI/TUI which would lend it better to script integration.

1. Love the project name.
2. This looks close to what I’ve imagined coalescing my hand conjured ffmpeg scripts into.
3. I’d like to feed this into a pipeline that includes Subler or equivalent.

If it’s stable, it’s not a lab.

That’s infrastructure.