VLC: Youtube Playlist Parser

youtube_playlist.lua

--[[
 Youtube playlist parser for VLC media player v1.0.2
 Copyright © 2021 Daniel Mendes

 Author: Daniel Mendes
 Contact: contact@daniel-mendes.ch

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
--]]
 
-- Helper function to get a parameter's value in a URL
function get_url_param( url, name )
    local _, _, res = string.find( url, "[&?]"..name.."=([^&]*)" )
    return res
end

-- Helper emulating vlc.readline() to work around its failure on
-- very long lines (see #24957)
function read_long_line()
    local eol
    local pos = 0
    local len = 32768
    repeat
        len = len * 2
        local line = vlc.peek( len )
        if not line then return nil end
        eol = string.find( line, "\n", pos + 1 )
        pos = len
    until eol or len >= 1024 * 1024 -- No EOF detection, loop until limit
    return vlc.read( eol or len )
end

-- Unescape Hexadecimal representation
function unescape (s)
    s = string.gsub(s or '', "\\x(%x%x)", function (h) return string.char(tonumber(h,16)) end)
    return s
end

-- convert a duration to seconds
function durationInSeconds(duration)
    local hour, min, sec = string.match(duration, "(%d?%d?):?(%d?%d):(%d%d)")

    if hour == "" then
       hour = 0
    end

    if min == "" then
        min = 0
    end

    if sec == "" then
        sec = 0
    end

    return hour*60*60 + min*60 + sec
end

-- Probe function.
function probe()
    if vlc.access == "http" and vlc.access == "https" then
        return false
    end

    return ( ( vlc.access == "http" or vlc.access == "https" ) and (
        ((
            string.match( vlc.path, "^www%.youtube%.com/" )
        or string.match( vlc.path, "^music%.youtube%.com/" ) -- out of use
         ) and (
            string.match(vlc.path, "[?&]list=") -- video page with playlist
        or string.match( vlc.path, "/playlist%?" ) -- playlist page
         )) or
            string.match( vlc.path, "^consent%.youtube%.com/" )
     ) )
end

-- Parse function.
function parse()
    if string.match( vlc.path, "^consent%.youtube%.com/" ) then
        vlc.msg.info("type: consent.youtube.com")

        -- Cookie consent redirection
        -- Location: https://consent.youtube.com/m?continue=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DXXXXXXXXXXX&gl=FR&m=0&pc=yt&uxe=23983172&hl=fr&src=1
        -- Set-Cookie: CONSENT=PENDING+355; expires=Fri, 01-Jan-2038 00:00:00 GMT; path=/; domain=.youtube.com
        
        local url = get_url_param( vlc.path, "continue" )

        if not url then
            vlc.msg.err( "Couldn't handle YouTube cookie consent redirection, please check for updates to this script or try disabling HTTP cookie forwarding" )
            return { }
        end

        return { { path = vlc.strings.decode_uri( url ), options = { ":no-http-forward-cookies" } } }
    elseif string.match( vlc.path, "^www.youtube.com/playlist%?list=" ) then
        vlc.msg.info("type: youtube.com/playlist?list=")

        local playlist = {}
        local item, lines, line
        local index = 1
        local playlistID = get_url_param( vlc.path, "list" )

        while true do
            lines = ""
            line = ""

            while line do
                lines = lines..line
                line = read_long_line()
                if not line then break end
            end
           
            if string.match(lines, 'var ytInitialData = ') then
                local index_start, index_end, group1, group2, group3 = string.find(lines, '(var ytInitialData = )(.*)(;</script><link rel=)')
                local json = require('dkjson')

                local jsonParsed = json.decode (group2)

                for key, video in ipairs(jsonParsed.contents.twoColumnBrowseResultsRenderer.tabs[1].tabRenderer.content.sectionListRenderer.contents[1].itemSectionRenderer.contents[1].playlistVideoListRenderer.contents) do
                    item = nil
                    item = {}

                     -- If continuation playlist
                    if video.continuationItemRenderer then
                       
                    else
                        item.path = "https://www.youtube.com/watch?v="..video.playlistVideoRenderer.videoId
                        item.title = video.playlistVideoRenderer.title.runs[1].text
                        item.duration = video.playlistVideoRenderer.lengthSeconds
                        item.author = video.playlistVideoRenderer.shortBylineText.runs[1].text
                        item.arturl = video.playlistVideoRenderer.thumbnail.thumbnails[3].url
                        
                        table.insert (playlist, item)
                    end
                end

                return playlist
            end
        end
    elseif string.match(vlc.path, "(www.youtube.com/watch?).*([?&]list=)") then
        vlc.msg.info("type: youtube.com/watch?list=")

        local playlist = {}
        local item, lines, line
        local index = 1
        local playlistID = get_url_param( vlc.path, "list" )
        local videoID = get_url_param( vlc.path, "v" )

        while true do
            lines = ""
            line = ""

            while line do
                lines = lines..line
                line = read_long_line()
                if not line then break end
            end

            if string.match(lines, 'var ytInitialData = ') then
                local index_start, index_end, group1, group2, group3 = string.find(lines, '(var ytInitialData = )(.*)(;</script><script nonce=")')

                local json = require('dkjson')

                local jsonParsed = json.decode (group2)

                for key, video in ipairs(jsonParsed.contents.twoColumnWatchNextResults.playlist.playlist.contents) do
                    item = nil
                    item = {}

                    item.path = "https://www.youtube.com/watch?v="..video.playlistPanelVideoRenderer.videoId
                    item.title = video.playlistPanelVideoRenderer.title.simpleText
                    item.duration =  durationInSeconds(video.playlistPanelVideoRenderer.lengthText.simpleText)
                    item.author = video.playlistPanelVideoRenderer.shortBylineText.runs[1].text
                    item.arturl = video.playlistPanelVideoRenderer.thumbnail.thumbnails[4].url
                    
                    table.insert (playlist, item)
                end

                return playlist
            end
        end
    elseif string.match( vlc.path, "^music%.youtube%.com/playlist%?list=" ) then
        vlc.msg.info("type: music.youtube.com/playlist?list=")

    elseif string.match(vlc.path, "(music.youtube.com/watch?).*([?&]list=)") then
        vlc.msg.info("type: music.youtube.com/watch?list=")
    end
end

Thanks! Your script was the one that worked for me after hassling with other generic plain yt-vlc integration scripts, as it started to raise the lua stream error: Couldn't extract youtube video URL, please check for updates to this script error message. However, resolution seems to be statically fixed at lower settings. Presumably at 240/144.

Thanks! Your script was the one that worked for me after hassling with other generic plain yt-vlc integration scripts, as it started to raise the lua stream error: Couldn't extract youtube video URL, please check for updates to this script error message. However, resolution seems to be statically fixed at lower settings. Presumably at 240/144.

Hello, this message doesn't come from my script but from the vlc youtube.lua

this message doesn't come from my script but from the vlc youtube.lua

That's exactly what i'm saying. Maybe by sentence structure caused a misinterpretation for you. Still, The resolution part, is of this script tho.

It's working!
Thanks!

After so many hours of downloading and testing old codes from 2016, I finally found one that adds YouTube playlists to VLC, thanks.

From what I can see, this code can't identify Youtube Music links, if anyone is wanting this, I came up with a silly "trick" that worked for me, just remove the "music." from the beginning of the link.