Can I get the settings for a specific filter in a lua script?

[Rabcor]

I know I can use mp.property_get("vf") to get all filters, but is there a way to check the specific settings for a specific filter?

Like say if my filters contain "crop=100:100:0:0" what would be the ideal way to get that "100:100:0:0" in a lua script?

[verygoodlee]

mpv/player/lua/stats.lua

Lines 623 to 661 in 1d1535f

	local function append_filters(s, prop, prefix)
	local length = 0
	local filters = {}
	for _,f in ipairs(mp.get_property_native(prop, {})) do
	local n = f.name
	if f.enabled ~= nil and not f.enabled then
	n = n .. " (disabled)"
	end
	if f.label ~= nil then
	n = "@" .. f.label .. ": " .. n
	end
	local p = {}
	for _,key in ipairs(sorted_keys(f.params)) do
	p[#p+1] = key .. "=" .. f.params[key]
	end
	if #p > 0 then
	p = " [" .. table.concat(p, " ") .. "]"
	else
	p = ""
	end
	length = length + n:len() + p:len()
	filters[#filters+1] = no_ASS(n) .. it(no_ASS(p))
	end
	if #filters > 0 then
	local ret
	if length < o.filter_params_max_length then
	ret = table.concat(filters, ", ")
	else
	local sep = o.nl .. o.indent .. o.indent
	ret = sep .. table.concat(filters, sep)
	end
	s[#s+1] = o.nl .. o.indent .. bold(prefix) .. o.prefix_sep .. ret
	end
	end

[Rabcor]

I'm not the best with lua, I don't think I fully understand this, if I'm getting it right, for _,f in ipairs(mp.get_property_native(prop, {})) do is listing all active filters one by one and for _,key in ipairs(sorted_keys(f.params)) do is listing the settings?

So if I'm understanding correctly I would need to do for _,f in ipairs(mp.get_property_native(prop, {})) do , then if f.label is the name of the filter (like crop) I can use for _,key in ipairs(sorted_keys(f.params)) do to get it's settings in order?

[verygoodlee]

mpv/DOCS/man/vf.rst

Lines 15 to 17 in 1d1535f

	Before the filter name, a label can be specified with ``@name:``, where
	name is an arbitrary user-given name, which identifies the filter. This
	is only needed if you want to toggle the filter at runtime.

KEY  vf toggle @yourlabel:crop=100:100:0:0

for _, f in ipairs(mp.get_property_native('vf', {})) do
    if f.label == 'yourlabel' and f.name == 'crop' then
        print(f.params['@0']) -- 100
        print(f.params['@1']) -- 100
        print(f.params['@2']) -- 0
        print(f.params['@3']) -- 0
    end
end

[Rabcor]

Thanks, that was exactly what i needed!

[guidocella]

local parameters = mp.get_property('vf'):match('crop=([%d:]+)')

But I recommend using --video-crop.

[Rabcor]

I'm using other filters too so i'm gonna need this anyways, your command just returns nil though.

but how do I use --video-crop from inside a lua script?

[guidocella]

mp.set_property('video-crop', 'value')

[Rabcor]

Thanks, ah i think i figured out why your command didn't work for me, it's a formatting issue, your command is seeking the format %d: but my value isn't formatted exactly that way... Although I tried changing that and making sure it is formatted that way but it still always seems to return nil,.

Edit: mp.get_property('vf') creates a lot of weird garbage too I don't think I can use it. it's not just the fillter string unfortunately.