mpv user-script to cycle between lavfi's denoise filters, tested over mpv 0.25.0-58-g99cef59fc

cycle-denoise.lua

-- settings
-- key_binding: press the key specified below
--      to cycle between denoise filters below,
--      set it to nil to disable the binding
local key_binding = "n"
-- key_binding_reverse cycle between denoise filters below
--      in reverse order, set it to nil to disable the binding,
--      set it to a single-char string to enable
local key_binding_reverse = nil

-- denoisers: specify names of denoise libavfilter filters
--     from `mpv --vf=lavfi=help` command
--     where the last 3 filters (dctdnoiz, owdenoise, nlmeans)
--     are too slow to be used in playback
local denoisers = {
    "removegrain"
    ,"atadenoise"
    ,"hqdn3d"
    ,"vaguedenoiser"
--    ,"dctdnoiz"
--    ,"owdenoise"
--    ,"nlmeans"
}

local denoiser_count = #denoisers
local filter_index = 0
local script_name = mp.get_script_name()
local denoise_label = string.format("%s-denoise", script_name)

-- from https://github.com/mpv-player/mpv/blob/39e04e929483847a3e0722d86d53f69837ed99db/TOOLS/lua/autocrop.lua
function del_filter_if_present(label)
    -- necessary because mp.command('vf del @label:filter') raises an
    -- error if the filter doesn't exist
    local vfs = mp.get_property_native("vf")
    for i,vf in pairs(vfs) do
        if vf["label"] == label then
            table.remove(vfs, i)
            mp.set_property_native("vf", vfs)
            return true
        end
    end
    return false
end

function cycle_denoise()
    if not del_filter_if_present(denoise_label) then
        filter_index = 0
    end

    filter_index = filter_index + 1
    if filter_index > denoiser_count then
        mp.osd_message("denoise filters removed", osd_time)
        return
    end

    -- insert the filter
    mp.command(
        string.format(
            'vf add @%s:lavfi=graph="%s"',
            denoise_label, denoisers[filter_index]
        )
    )

end

function cycle_denoise_reverse()
    if not del_filter_if_present(denoise_label) then
        filter_index = denoiser_count
    else
        filter_index = filter_index - 1
    end

    if filter_index < 1 then
        mp.osd_message("denoise filters removed", osd_time)
        return
    end

    -- insert the filter
    mp.command(
        string.format(
            'vf add @%s:lavfi=graph="%s"',
            denoise_label, denoisers[filter_index]
        )
    )

end

if key_binding then
    mp.add_key_binding(key_binding, "denoise", cycle_denoise)
end

if key_binding_reverse then
    mp.add_key_binding(key_binding_reverse, "denoise-reverse", cycle_denoise_reverse)
end

Awesome!

There is a noticeable amount of lag when using vaguedenoiser. I'm using a Ryzen 5 5600x and RTX 3070. Is that normal?

Audio/Video desynchronisation detected! Possible reasons include too slow
hardware, temporary CPU spikes, broken drivers, and broken files. Audio
position will not match to the video (see A-V status field).

@RafeeDaBoy You can ask this in one of:

• Issue tracker of mpv: https://github.com/mpv-player/mpv/issues
• Mailing list or IRC of ffmpeg: https://ffmpeg.org/contact.html

Hi. How can I use 2 at the same time? In this example I want to use "atadenoise" and "hqdn3d"
Thank you :)

Hi. How can I use 2 at the same time? In this example I want to use "atadenoise" and "hqdn3d" Thank you :)

@geextahslex Open console, type vf add lavfi=graph=atadenoise, enter, type vf add lavfi=graph=hqdn3d, enter

But how to do that without typing something into a console? Isn't it possible to change the script to have this option added?

But how to do that without typing something into a console? Isn't it possible to change the script to have this option added?

@geextahslex Yes, it's possible, here is the docs of mpv and lua, use lua 5.1 syntax since luajit is used.
If coding in lua is not an option, you can also try javascript api.

@myfreeer The noise is most of the time present in the lows 0-60srgb. When it's affecting the whole image, it blurrs the mids and highlights with no reason. Is it possible to limit the affected range of the video filter (srgb0-60)? This would be very usefull. It would keep details in the highlights, like faces etc.

@myfreeer The noise is most of the time present in the lows 0-60srgb. When it's affecting the whole image, it blurrs the mids and highlights with no reason. Is it possible to limit the affected range of the video filter (srgb0-60)? This would be very usefull. It would keep details in the highlights, like faces etc.

@geextahslex The filters referenced by this script is ffmpeg filters, check the docs for detailed usage of filters, or maybe try VapourSynth filter if your build includes it.