Joseph Wright

Have you looked at `media9`?

@ArchangeGabriel In the short term it's `media9` or nothing. At some stage I'll look at this area for `expl3`/LaTeX3, but I don't know how much is doable cross-platform and outside...

@ArchangeGabriel All sounds good, but I know that videos in PDFs can be 'fun'. In any case, this is on my radar, but at the moment not near the top...

That's `\only`

@jlaurens You don't want a `+` in there: `beamer` interprets that as 'step and include the current frame number'. So for example ```latex \only ``` for frames 4, 5, 6,...

https://www.texdev.net/2014/01/17/the-beamer-slide-overlay-concept/

Your example is mixing explicit and `+`/`.` syntax, which is always 'interesting'. You've stepped the counter three times, so you'd need `.(-2)` in the example. I'd therefore go for ```latex...

Yeah, in principle ... but they will have to be 'smuggled' out of a group (which controls font/color settings). I guess I'll have to use the internals of `pgf` here.

@domenjoud The group localises font/color settings (`\usebeamercolor ...`) which need to apply in the shading but not necessarily to the current context. So the shading has to be set up...

This is by-design: `caption name` inherits from `caption`: ```latex \setbeamerfont{caption}{size=\small} \setbeamerfont{caption name}{parent={structure,caption}} ``` (`base/themes/font/beamerfontthemedefault.sty`).