mpv player script to open directory and select currently playing file (Windows).

open-in-explorer.lua

-- open-in-explorer.lua

mp.add_key_binding(nil, "open-in-explorer", function()
    local path = mp.get_property("path")
    if path ~= nil and not path:match("^%a[%a%d-_]+://") then
        path = string.gsub(path, "/", "\\")
        mp.command_native({
            name = "subprocess",
            playback_only = false,
            args = { 'explorer', '/select,',  path .. ' ' },
        })
    else
        mp.osd_message("Invalid path: " .. (path or "No path provided"))
    end
end)

uosc has a cross-platform solution with its show-in-directory script binding.

Well, now that's slightly amusing. This whole thing came to be because of an issue with PowerShell version in mpv.net, but for some reason it didn't hit me to check if uosc didn't already have this. I guess this is still useful as a standalone solution for people that don't use uosc.

Though going through my weirdly named test files, uosc has an issue with paths that have a comma in them:

C:\test\test2\aa,aa.mp4 this will open "This PC" directory
C:\test\test2\,aaaa.mp4 this will open "test" directory and select test2 folder

Everything starts working fine the moment there's a space anywhere in the path.

[edit]
Wait… This one also has the same issue, i'm quite sure that i've used the same files testing this thing previously, but apparently not? PowerShell version also is broken in those 2 cases.

C:\test\test2\..,aaaa.mp4 uh huh… Amazing way of navigating directories

Here's the problem in more detail: mpvnet-player/mpv.net#580 (comment)

(...)
This seems to work:

mp.add_key_binding(nil, "open-in-explorer", function()
    local path = mp.get_property("path")
    if path ~= nil and not path:match("^%a[%a%d-_]+://") then
        local ps_code = [[
            Start-Process -FilePath explorer.exe -ArgumentList "/select,`"__path__`""
        ]]
        local path = string.gsub(path, "/", "\\")
        local path = string.gsub(path, "[%(%)%.%+%-%*%?%[%]%^%$%%]", "%%%1")
        local ps_path = string.gsub(path, "([$`])", "`%1")      -- escape dollar/backtick signs for PowerShell
        local ps_code = string.gsub(ps_code, "__path__", ps_path)
        mp.command_native({
            name = "subprocess",
            playback_only = false,
            args = { 'powershell', '-NoProfile', '-Command', ps_code },
        })
    else
        mp.osd_message("Invalid path: " .. (path or "No path provided"))
    end
end)

We're breaking records… At this point this seems like a case of "just Windows / mpv things" and pick your poison. It would be far more preferable to get mpv to pass it with a single set of double quotes through cmd in all cases, but i don't think it's possible.

Okay, main version seems to now work in every single case, so there's again no need to use the above PowerShell solution.

Was the fix just appending a space to the path? Please submit a PR with uosc since you have a setup to reproduce this. 🙏

Yea, a trailing space was all it takes to fix this. I've submited the mentioned PR.