QT6 / mpv update

[rijnhard]

So I'm toying with this on my own, but at the pace I'm going and my poor QT/c++ skills won't have this working in the next decade.

Essentially: the issue is two fold:

1. 4k hevc hdr files just won't play (on Linux at least), even though they play fine on mpv.
2. QT6 is necessary for HDR playback (and proper wayland integration).

This does get a lot more involved, because the libmpv render API doesn't support gpu-next which is the vulkan backend needed for HDR.
see mpv-player/mpv#10810

Now, the wild card is Haruna, it does support HDR and is libmpv based, but I haven't been able to figure out how the heck they actually do it.

So are there any plans to update the shell? It's working but starting to age...

Just as a note, since Haruna is also GPL v3 licenced, my idea was to basically wholesale jack a bunch of their code (and keep attribution)

[lynchmv]

I can't say I've done much, but with the help of Gemini/ChatGPT, I've managed to get Stremio building and running with Qt6 on a Raspberry Pi 5. Here is my branch if you're interested: https://github.com/lynchmv/stremio-shell/tree/Gemini-Qt6

[RadoslavL]

@lynchmv I have tried your branch, but the main problem with it and with the qt6 branch of this repository, is that neither of them support saving the user's authToken and settings. I really wished it would work, because I use Gentoo and the official repository has already dropped all support for Qt5 :(

[ahjolinna]

it seems the client has been rewritten to Rust: https://github.com/Stremio/stremio-linux-shell

[rijnhard]

Just a note for anyone reading this.
HDR is possible with libmpv, using the gpu (OpenGL) backend, as long as the toolkit being used has proper wayland colour management support.

This does still mean we miss out on the vulkan goodness of gpu-next (libplacebo).

But since the mpv devs haven't (and kinda don't want to) build a render API in libmpv for gpu-next, your only options are either to stick with OpenGL, or use embedded mpv.
And embedding in wayland basically requires wiring up your own mini compositor or using something like https://gitlab.xfce.org/kelnos/libwlembed.