use-filedir-conf=yes-options doesn't apply to .m3u-playlist entries

[zzzealed]

mpv Information

mpv v0.39.0-723-g38ad1ed0 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
 built on Feb  2 2025 00:05:18
libplacebo version: v7.350.0 (v7.349.0-30-g056b852-dirty)
FFmpeg version: N-118390-g9b5a4c0ae
FFmpeg library versions:
   libavcodec      61.31.101
   libavdevice     61.4.100
   libavfilter     10.9.100
   libavformat     61.9.106
   libavutil       59.56.100
   libswresample   5.4.100
   libswscale      8.13.100

Other Information

- Windows version: Microsoft Windows [Version 10.0.26100.2894]
- GPU model, driver and version: Geforce RTX 2070, NVIDIA-driver v/566.36
- Source of mpv: https://github.com/shinchiro/mpv-winbuild-cmake
- Latest known working version: N/A
- Issue started after the following happened: N/A

Reproduction Steps

1. Create test.m3u8-file containing links to videos like subdir/video.mp4
2. Create mpv.conf-file in same directory, containing configuration like fullscreen=yes or save-position-on-quit=yes
3. mpv --no-config --use-filedir-conf test.m3u8

Expected Behavior

Options from the mpv.conf-file next to the test.m3u8-file should be applied.

Actual Behavior

Options from the mpv.conf-file next to the test.m3u8-file are not applied.

Log File

output.txt

Sample Files

No response

I carefully read all instruction and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

Edit:

Also happens to local videofiles, I discovered. Even with profile-restore=copy in external mpv.conf

[Bellavene]

For me it works with playlists also
mpv b8839b1

[kasper93]

It works as documented. It uses a file specific config that is currently played, so in your case subdir/mpv.conf will be used.

For this, mpv first tries to load a mpv.conf from the same directory as the file played and then tries to load any file-specific configuration.

Playlists are not played or shown as current file in mpv. This is essentially a feature request to add --use-playlistdir-conf option or something similar.

[zzzealed]

It works as documented. It uses a file specific config that is currently played, so in your case subdir/mpv.conf will be used.

For this, mpv first tries to load a mpv.conf from the same directory as the file played and then tries to load any file-specific configuration.

Playlists are not played or shown as current file in mpv. This is essentially a feature request to add --use-playlistdir-conf option or something similar.

I see. Well in that case, yeah I think it would be great as a feature.
In general I'm a bit confused by the --use-filedir-conf behaviour. Why doesn't the params set carry over to the next file, if it's outside or in a subdir of the external mpv.conf. Guess that's just how it was designed? Maybe just adding a feature that would allow these params to be carried over could also be an option.

[zzzealed]

For me it works with playlists also mpv b8839b1

Exactly what options did you leave in the external mpv.conf? Because for me, it sometimes works with the playlist-start=3-option. Other options don't work though.

[Bellavene]

I just have copied the whole mpv.conf into my parent music folder, m3u files are stored there too. Just enabled the visualization. I believe there is no need for you of my whole mpv.conf, this part is for music:

[extension.mp3]
profile=music

[extension.m4a]
profile=music

[extension.flac]
profile=music

[extension.aiff]
profile=music

[music]
profile-desc="Music profile"
lavfi-complex=""
profile=scope
osd-msg1="${?media-title:${media-title}}${!media-title:No file.}"
osd-font-size=30
osd-scale-by-window=no
osd-align-x=right

[scope]
lavfi-complex='[aid1]asplit[ai][ao];[ai]showwaves=mode=cline:s=800x800:colors=red|random|random:r=25,split[wf][m];[vid1]scale=800x800,format=gbrp[vid];[m]alphaextract,negate,mergeplanes=0x0:format=gbrp[m];[vid][wf][m]maskedmerge[vo]'

After that, whenever I open m3u playlists stored in music folder they are playing with visualization.

[kasper93]

After that, whenever I open m3u playlists stored in music folder they are playing with visualization.

Yes, because it loads the config from the media file location. Exactly as --use-filedir-conf is described. This issue is about the case when playlist (and config) is in different directory than the files.

[zzzealed]

Yes like kasper93 described this works as intended. My feature-request attains to URLs and files in subdirectories.

[Bellavene]

Ah, sorry then.

[zzzealed]

For the time being, this is what me and DeepSeek came up with.

-- dynamic-include.lua
local utils = require 'mp.utils'

-- Store the initial input file path
local initial_input_path = nil

-- Function to normalize path separators (cross-platform)
local function normalize_path(path)
    return path:gsub("\\", "/")
end

-- Function to check if a file exists
local function file_exists(path)
    local file = io.open(path, "r")
    if file then
        file:close()
        return true
    end
    return false
end

-- Function to parse and apply configuration settings
local function apply_config_file(conf_path)
    local file = io.open(conf_path, "r")
    if not file then
        mp.msg.warn("Config file not found: " .. conf_path)
        return
    end

    mp.msg.info("Loading config file: " .. conf_path)
    for line in file:lines() do
        -- Skip comments and empty lines
        if not line:match("^%s*#") and not line:match("^%s*$") then
            -- Parse the line into a key and value
            local key, value = line:match("^([^=]+)=(.+)$")
            if key and value then
                key = key:gsub("%s+", "")  -- Remove whitespace
                value = value:gsub("%s+", "")  -- Remove whitespace
                -- Set the property or option
                local success, err = pcall(mp.set_property, key, value)
                if not success then
                    mp.msg.warn("Failed to set property: " .. key .. "=" .. value .. " (" .. err .. ")")
                else
                    mp.msg.info("Set property: " .. key .. "=" .. value)
                end
            else
                mp.msg.warn("Invalid line in config file: " .. line)
            end
        end
    end
    file:close()
end

-- Function to handle the initial input file
local function track_initial_input_path()
    -- Only process the first input file (playlist file)
    if initial_input_path then
        return
    end

    -- Get the path of the first input file
    local path = mp.get_property("path")
    if not path then
        mp.msg.warn("No file path available.")
        return
    end

    -- Normalize path separators
    initial_input_path = normalize_path(path)
    mp.msg.info("Initial input file path set to: " .. initial_input_path)

    -- Get the directory of the initial input file
    local dir = utils.split_path(initial_input_path)
    local conf_path = utils.join_path(dir, "mpv.conf")
    conf_path = normalize_path(conf_path)

    -- Check if the config file exists and apply it
    if file_exists(conf_path) then
        apply_config_file(conf_path)
    else
        mp.msg.warn("Config file not found: " .. conf_path)
    end
end

-- Register the event to run when a file starts loading
mp.register_event("start-file", track_initial_input_path)

I'm too tired to actually look this through, but it works. It applies any MPV option from a mpv.conf next to a foo.m3u8.

[guidocella]

This also does it:

local utils = require 'mp.utils'
local first_entry = mp.get_property('playlist/0/filename')

if first_entry then
    local path = select(1, utils.split_path(first_entry)) .. 'mpv.conf'
    if utils.file_info(path) then
        mp.commandv('load-config-file', path)
    end
end

[kasper93]

local first_entry = mp.get_property('playlist/0/filename')

This should be playlist-path

[guidocella]

playlist-path is not available on init. This applies the config file before the playlist is loaded.

[zzzealed]

DAMN @guidocella you're goated, good shit.