Temporary depend on yt-dlp for youtube since youtube broke (throttle sig)

1 files changed, 1057 insertions, 0 deletions

diff --git a/mpv/scripts/ytdl_hook.lua b/mpv/scripts/ytdl_hook.lua
new file mode 100644
index 0000000..0d31bb1
--- /dev/null
+++ b/mpv/scripts/ytdl_hook.lua
@@ -0,0 +1,1057 @@
+local utils = require 'mp.utils'
+local msg = require 'mp.msg'
+local options = require 'mp.options'
+
+local o = {
+    exclude = "",
+    try_ytdl_first = false,
+    use_manifests = false,
+    all_formats = false,
+    force_all_formats = true,
+    ytdl_path = "",
+}
+
+local ytdl = {
+    path = "",
+    paths_to_search = {"yt-dlp", "yt-dlp_x86", "youtube-dl"},
+    searched = false,
+    blacklisted = {}
+}
+
+options.read_options(o, nil, function()
+    ytdl.blacklisted = {} -- reparse o.exclude next time
+    ytdl.searched = false
+end)
+
+local chapter_list = {}
+
+function Set (t)
+    local set = {}
+    for _, v in pairs(t) do set[v] = true end
+    return set
+end
+
+-- ?: surrogate (keep in mind that there is no lazy evaluation)
+function iif(cond, if_true, if_false)
+    if cond then
+        return if_true
+    end
+    return if_false
+end
+
+-- youtube-dl JSON name to mpv tag name
+local tag_list = {
+    ["uploader"]        = "uploader",
+    ["channel_url"]     = "channel_url",
+    -- these titles tend to be a bit too long, so hide them on the terminal
+    -- (default --display-tags does not include this name)
+    ["description"]     = "ytdl_description",
+    -- "title" is handled by force-media-title
+    -- tags don't work with all_formats=yes
+}
+
+local safe_protos = Set {
+    "http", "https", "ftp", "ftps",
+    "rtmp", "rtmps", "rtmpe", "rtmpt", "rtmpts", "rtmpte",
+    "data"
+}
+
+-- For some sites, youtube-dl returns the audio codec (?) only in the "ext" field.
+local ext_map = {
+    ["mp3"]         = "mp3",
+    ["opus"]        = "opus",
+}
+
+local codec_map = {
+    -- src pattern  = mpv codec
+    ["vtt"]         = "webvtt",
+    ["opus"]        = "opus",
+    ["vp9"]         = "vp9",
+    ["avc1%..*"]    = "h264",
+    ["av01%..*"]    = "av1",
+    ["mp4a%..*"]    = "aac",
+}
+
+-- Codec name as reported by youtube-dl mapped to mpv internal codec names.
+-- Fun fact: mpv will not really use the codec, but will still try to initialize
+-- the codec on track selection (just to scrap it), meaning it's only a hint,
+-- but one that may make initialization fail. On the other hand, if the codec
+-- is valid but completely different from the actual media, nothing bad happens.
+local function map_codec_to_mpv(codec)
+    if codec == nil then
+        return nil
+    end
+    for k, v in pairs(codec_map) do
+        local s, e = codec:find(k)
+        if s == 1 and e == #codec then
+            return v
+        end
+    end
+    return nil
+end
+
+local function platform_is_windows()
+    return mp.get_property_native("platform") == "windows"
+end
+
+local function exec(args)
+    msg.debug("Running: " .. table.concat(args, " "))
+
+    return mp.command_native({
+        name = "subprocess",
+        args = args,
+        capture_stdout = true,
+        capture_stderr = true,
+    })
+end
+
+-- return true if it was explicitly set on the command line
+local function option_was_set(name)
+    return mp.get_property_bool("option-info/" ..name.. "/set-from-commandline",
+                                false)
+end
+
+-- return true if the option was set locally
+local function option_was_set_locally(name)
+    return mp.get_property_bool("option-info/" ..name.. "/set-locally", false)
+end
+
+-- youtube-dl may set special http headers for some sites (user-agent, cookies)
+local function set_http_headers(http_headers)
+    if not http_headers then
+        return
+    end
+    local headers = {}
+    local useragent = http_headers["User-Agent"]
+    if useragent and not option_was_set("user-agent") then
+        mp.set_property("file-local-options/user-agent", useragent)
+    end
+    local additional_fields = {"Cookie", "Referer", "X-Forwarded-For"}
+    for idx, item in pairs(additional_fields) do
+        local field_value = http_headers[item]
+        if field_value then
+            headers[#headers + 1] = item .. ": " .. field_value
+        end
+    end
+    if #headers > 0 and not option_was_set("http-header-fields") then
+        mp.set_property_native("file-local-options/http-header-fields", headers)
+    end
+end
+
+local function append_libav_opt(props, name, value)
+    if not props then
+        props = {}
+    end
+
+    if name and value and not props[name] then
+        props[name] = value
+    end
+
+    return props
+end
+
+local function edl_escape(url)
+    return "%" .. string.len(url) .. "%" .. url
+end
+
+local function url_is_safe(url)
+    local proto = type(url) == "string" and url:match("^(%a[%w+.-]*):") or nil
+    local safe = proto and safe_protos[proto]
+    if not safe then
+        msg.error(("Ignoring potentially unsafe url: '%s'"):format(url))
+    end
+    return safe
+end
+
+local function time_to_secs(time_string)
+    local ret
+
+    local a, b, c = time_string:match("(%d+):(%d%d?):(%d%d)")
+    if a ~= nil then
+        ret = (a*3600 + b*60 + c)
+    else
+        a, b = time_string:match("(%d%d?):(%d%d)")
+        if a ~= nil then
+            ret = (a*60 + b)
+        end
+    end
+
+    return ret
+end
+
+local function extract_chapters(data, video_length)
+    local ret = {}
+
+    for line in data:gmatch("[^\r\n]+") do
+        local time = time_to_secs(line)
+        if time and (time < video_length) then
+            table.insert(ret, {time = time, title = line})
+        end
+    end
+    table.sort(ret, function(a, b) return a.time < b.time end)
+    return ret
+end
+
+local function is_blacklisted(url)
+    if o.exclude == "" then return false end
+    if #ytdl.blacklisted == 0 then
+        for match in o.exclude:gmatch('%|?([^|]+)') do
+            ytdl.blacklisted[#ytdl.blacklisted + 1] = match
+        end
+    end
+    if #ytdl.blacklisted > 0 then
+        url = url:match('https?://(.+)')
+        for _, exclude in ipairs(ytdl.blacklisted) do
+            if url:match(exclude) then
+                msg.verbose('URL matches excluded substring. Skipping.')
+                return true
+            end
+        end
+    end
+    return false
+end
+
+local function parse_yt_playlist(url, json)
+    -- return 0-based index to use with --playlist-start
+
+    if not json.extractor or
+       (json.extractor ~= "youtube:tab" and
+        json.extractor ~= "youtube:playlist") then
+        return nil
+    end
+
+    local query = url:match("%?.+")
+    if not query then return nil end
+
+    local args = {}
+    for arg, param in query:gmatch("(%a+)=([^&?]+)") do
+        if arg and param then
+            args[arg] = param
+        end
+    end
+
+    local maybe_idx = tonumber(args["index"])
+
+    -- if index matches v param it's probably the requested item
+    if maybe_idx and #json.entries >= maybe_idx and
+        json.entries[maybe_idx].id == args["v"] then
+        msg.debug("index matches requested video")
+        return maybe_idx - 1
+    end
+
+    -- if there's no index or it doesn't match, look for video
+    for i = 1, #json.entries do
+        if json.entries[i].id == args["v"] then
+            msg.debug("found requested video in index " .. (i - 1))
+            return i - 1
+        end
+    end
+
+    msg.debug("requested video not found in playlist")
+    -- if item isn't on the playlist, give up
+    return nil
+end
+
+local function make_absolute_url(base_url, url)
+    if url:find("https?://") == 1 then return url end
+
+    local proto, domain, rest =
+        base_url:match("(https?://)([^/]+/)(.*)/?")
+    local segs = {}
+    rest:gsub("([^/]+)", function(c) table.insert(segs, c) end)
+    url:gsub("([^/]+)", function(c) table.insert(segs, c) end)
+    local resolved_url = {}
+    for i, v in ipairs(segs) do
+        if v == ".." then
+            table.remove(resolved_url)
+        elseif v ~= "." then
+            table.insert(resolved_url, v)
+        end
+    end
+    return proto .. domain ..
+        table.concat(resolved_url, "/")
+end
+
+local function join_url(base_url, fragment)
+    local res = ""
+    if base_url and fragment.path then
+        res = make_absolute_url(base_url, fragment.path)
+    elseif fragment.url then
+        res = fragment.url
+    end
+    return res
+end
+
+local function edl_track_joined(fragments, protocol, is_live, base)
+    if not (type(fragments) == "table") or not fragments[1] then
+        msg.debug("No fragments to join into EDL")
+        return nil
+    end
+
+    local edl = "edl://"
+    local offset = 1
+    local parts = {}
+
+    if (protocol == "http_dash_segments") and not is_live then
+        msg.debug("Using dash")
+        local args = ""
+
+        -- assume MP4 DASH initialization segment
+        if not fragments[1].duration and #fragments > 1 then
+            msg.debug("Using init segment")
+            args = args .. ",init=" .. edl_escape(join_url(base, fragments[1]))
+            offset = 2
+        end
+
+        table.insert(parts, "!mp4_dash" .. args)
+
+        -- Check remaining fragments for duration;
+        -- if not available in all, give up.
+        for i = offset, #fragments do
+            if not fragments[i].duration then
+                msg.verbose("EDL doesn't support fragments " ..
+                         "without duration with MP4 DASH")
+                return nil
+            end
+        end
+    end
+
+    for i = offset, #fragments do
+        local fragment = fragments[i]
+        if not url_is_safe(join_url(base, fragment)) then
+            return nil
+        end
+        table.insert(parts, edl_escape(join_url(base, fragment)))
+        if fragment.duration then
+            parts[#parts] =
+                parts[#parts] .. ",length="..fragment.duration
+        end
+    end
+    return edl .. table.concat(parts, ";") .. ";"
+end
+
+local function has_native_dash_demuxer()
+    local demuxers = mp.get_property_native("demuxer-lavf-list", {})
+    for _, v in ipairs(demuxers) do
+        if v == "dash" then
+            return true
+        end
+    end
+    return false
+end
+
+local function valid_manifest(json)
+    local reqfmt = json["requested_formats"] and json["requested_formats"][1] or {}
+    if not reqfmt["manifest_url"] and not json["manifest_url"] then
+        return false
+    end
+    local proto = reqfmt["protocol"] or json["protocol"] or ""
+    return (proto == "http_dash_segments" and has_native_dash_demuxer()) or
+        proto:find("^m3u8")
+end
+
+local function as_integer(v, def)
+    def = def or 0
+    local num = math.floor(tonumber(v) or def)
+    if num > -math.huge and num < math.huge then
+        return num
+    end
+    return def
+end
+
+local function tags_to_edl(json)
+    local tags = {}
+    for json_name, mp_name in pairs(tag_list) do
+        local v = json[json_name]
+        if v then
+            tags[#tags + 1] = mp_name .. "=" .. edl_escape(tostring(v))
+        end
+    end
+    if #tags == 0 then
+        return nil
+    end
+    return "!global_tags," .. table.concat(tags, ",")
+end
+
+-- Convert a format list from youtube-dl to an EDL URL, or plain URL.
+--  json: full json blob by youtube-dl
+--  formats: format list by youtube-dl
+--  use_all_formats: if=true, then formats is the full format list, and the
+--                   function will attempt to return them as delay-loaded tracks
+-- See res table initialization in the function for result type.
+local function formats_to_edl(json, formats, use_all_formats)
+    local res = {
+        -- the media URL, which may be EDL
+        url = nil,
+        -- for use_all_formats=true: whether any muxed formats are present, and
+        -- at the same time the separate EDL parts don't have both audio/video
+        muxed_needed = false,
+    }
+
+    local default_formats = {}
+    local requested_formats = json["requested_formats"] or json["requested_downloads"]
+    if use_all_formats and requested_formats then
+        for _, track in ipairs(requested_formats) do
+            local id = track["format_id"]
+            if id then
+                default_formats[id] = true
+            end
+        end
+    end
+
+    local duration = as_integer(json["duration"])
+    local single_url = nil
+    local streams = {}
+
+    local tbr_only = true
+    for index, track in ipairs(formats) do
+        tbr_only = tbr_only and track["tbr"] and
+                   (not track["abr"]) and (not track["vbr"])
+    end
+
+    local has_requested_video = false
+    local has_requested_audio = false
+    -- Web players with quality selection always show the highest quality
+    -- option at the top. Since tracks are usually listed with the first
+    -- track at the top, that should also be the highest quality track.
+    -- yt-dlp/youtube-dl sorts it's formats from worst to best.
+    -- Iterate in reverse to get best track first.
+    for index = #formats, 1, -1 do
+        local track = formats[index]
+        local edl_track = nil
+        edl_track = edl_track_joined(track.fragments,
+            track.protocol, json.is_live,
+            track.fragment_base_url)
+        if not edl_track and not url_is_safe(track.url) then
+            msg.error("No safe URL or supported fragmented stream available")
+            return nil
+        end
+
+        local is_default = default_formats[track["format_id"]]
+        local tracks = {}
+        -- "none" means it is not a video
+        -- nil means it is unknown
+        if (o.force_all_formats or track.vcodec) and track.vcodec ~= "none" then
+            tracks[#tracks + 1] = {
+                media_type = "video",
+                codec = map_codec_to_mpv(track.vcodec),
+            }
+            if is_default then
+                has_requested_video = true
+            end
+        end
+        if (o.force_all_formats or track.acodec) and track.acodec ~= "none" then
+            tracks[#tracks + 1] = {
+                media_type = "audio",
+                codec = map_codec_to_mpv(track.acodec) or
+                        ext_map[track.ext],
+            }
+            if is_default then
+                has_requested_audio = true
+            end
+        end
+
+        local url = edl_track or track.url
+        local hdr = {"!new_stream", "!no_clip", "!no_chapters"}
+        local skip = #tracks == 0
+        local params = ""
+
+        if use_all_formats then
+            for _, sub in ipairs(tracks) do
+                -- A single track that is either audio or video. Delay load it.
+                local props = ""
+                if sub.media_type == "video" then
+                    props = props .. ",w=" .. as_integer(track.width)
+                                  .. ",h=" .. as_integer(track.height)
+                                  .. ",fps=" .. as_integer(track.fps)
+                elseif sub.media_type == "audio" then
+                    props = props .. ",samplerate=" .. as_integer(track.asr)
+                end
+                hdr[#hdr + 1] = "!delay_open,media_type=" .. sub.media_type ..
+                    ",codec=" .. (sub.codec or "null") .. props
+
+                -- Add bitrate information etc. for better user selection.
+                local byterate = 0
+                local rates = {"tbr", "vbr", "abr"}
+                if #tracks > 1 then
+                    rates = {({video = "vbr", audio = "abr"})[sub.media_type]}
+                end
+                if tbr_only then
+                    rates = {"tbr"}
+                end
+                for _, f in ipairs(rates) do
+                    local br = as_integer(track[f])
+                    if br > 0 then
+                        byterate = math.floor(br * 1000 / 8)
+                        break
+                    end
+                end
+                local title = track.format or track.format_note or ""
+                if #tracks > 1 then
+                    if #title > 0 then
+                        title = title .. " "
+                    end
+                    title = title .. "muxed-" .. index
+                end
+                local flags = {}
+                if is_default then
+                    flags[#flags + 1] = "default"
+                end
+                hdr[#hdr + 1] = "!track_meta,title=" ..
+                    edl_escape(title) .. ",byterate=" .. byterate ..
+                    iif(#flags > 0, ",flags=" .. table.concat(flags, "+"), "")
+            end
+
+            if duration > 0 then
+                params = params .. ",length=" .. duration
+            end
+        end
+
+        if not skip then
+            hdr[#hdr + 1] = edl_escape(url) .. params
+
+            streams[#streams + 1] = table.concat(hdr, ";")
+            -- In case there is only 1 of these streams.
+            -- Note: assumes it has no important EDL headers
+            single_url = url
+        end
+    end
+
+    -- Merge all tracks into a single virtual file, but avoid EDL if it's
+    -- only a single track (i.e. redundant).
+    if #streams == 1 and single_url then
+        res.url = single_url
+    elseif #streams > 0 then
+        local tags = tags_to_edl(json)
+        if tags then
+            -- not a stream; just for the sake of concatenating the EDL string
+            streams[#streams + 1] = tags
+        end
+        res.url = "edl://" .. table.concat(streams, ";")
+    else
+        return nil
+    end
+
+    if has_requested_audio ~= has_requested_video then
+        local not_req_prop = has_requested_video and "aid" or "vid"
+        if mp.get_property(not_req_prop) == "auto" then
+            mp.set_property("file-local-options/" .. not_req_prop, "no")
+        end
+    end
+
+    return res
+end
+
+local function add_single_video(json)
+    local streamurl = ""
+    local format_info = ""
+    local max_bitrate = 0
+    local requested_formats = json["requested_formats"] or json["requested_downloads"]
+    local all_formats = json["formats"]
+    local has_requested_formats = requested_formats and #requested_formats > 0
+    local http_headers = has_requested_formats
+                         and requested_formats[1].http_headers
+                         or json.http_headers
+
+    if o.use_manifests and valid_manifest(json) then
+        -- prefer manifest_url if present
+        format_info = "manifest"
+
+        local mpd_url = requested_formats and
+            requested_formats[1]["manifest_url"] or json["manifest_url"]
+        if not mpd_url then
+            msg.error("No manifest URL found in JSON data.")
+            return
+        elseif not url_is_safe(mpd_url) then
+            return
+        end
+
+        streamurl = mpd_url
+
+        if requested_formats then
+            for _, track in pairs(requested_formats) do
+                max_bitrate = (track.tbr and track.tbr > max_bitrate) and
+                    track.tbr or max_bitrate
+            end
+        elseif json.tbr then
+            max_bitrate = json.tbr > max_bitrate and json.tbr or max_bitrate
+        end
+    end
+
+    if streamurl == ""  then
+        -- possibly DASH/split tracks
+        local res = nil
+
+        -- Not having requested_formats usually hints to HLS master playlist
+        -- usage, which we don't want to split off, at least not yet.
+        if (all_formats and o.all_formats) and
+           (has_requested_formats or o.force_all_formats)
+        then
+            format_info = "all_formats (separate)"
+            res = formats_to_edl(json, all_formats, true)
+            -- Note: since we don't delay-load muxed streams, use normal stream
+            -- selection if we have to use muxed streams.
+            if res and res.muxed_needed then
+                res = nil
+            end
+        end
+
+        if (not res) and has_requested_formats then
+            format_info = "youtube-dl (separate)"
+            res = formats_to_edl(json, requested_formats, false)
+        end
+
+        if res then
+            streamurl = res.url
+        end
+    end
+
+    if streamurl == "" and json.url then
+        format_info = "youtube-dl (single)"
+        local edl_track = nil
+        edl_track = edl_track_joined(json.fragments, json.protocol,
+            json.is_live, json.fragment_base_url)
+
+        if not edl_track and not url_is_safe(json.url) then
+            return
+        end
+        -- normal video or single track
+        streamurl = edl_track or json.url
+    end
+
+    if streamurl == "" then
+        msg.error("No URL found in JSON data.")
+        return
+    end
+
+    set_http_headers(http_headers)
+
+    msg.verbose("format selection: " .. format_info)
+    msg.debug("streamurl: " .. streamurl)
+
+    mp.set_property("stream-open-filename", streamurl:gsub("^data:", "data://", 1))
+
+    if mp.get_property("force-media-title", "") == "" then
+        mp.set_property("file-local-options/force-media-title", json.title)
+    end
+
+    -- set hls-bitrate for dash track selection
+    if max_bitrate > 0 and
+        not option_was_set("hls-bitrate") and
+        not option_was_set_locally("hls-bitrate") then
+        mp.set_property_native('file-local-options/hls-bitrate', max_bitrate*1000)
+    end
+
+    -- add subtitles
+    if not (json.requested_subtitles == nil) then
+        local subs = {}
+        for lang, info in pairs(json.requested_subtitles) do
+            subs[#subs + 1] = {lang = lang or "-", info = info}
+        end
+        table.sort(subs, function(a, b) return a.lang < b.lang end)
+        for _, e in ipairs(subs) do
+            local lang, sub_info = e.lang, e.info
+            msg.verbose("adding subtitle ["..lang.."]")
+
+            local sub = nil
+
+            if not (sub_info.data == nil) then
+                sub = "memory://"..sub_info.data
+            elseif not (sub_info.url == nil) and
+                url_is_safe(sub_info.url) then
+                sub = sub_info.url
+            end
+
+            if not (sub == nil) then
+                local edl = "edl://!no_clip;!delay_open,media_type=sub"
+                local codec = map_codec_to_mpv(sub_info.ext)
+                if codec then
+                    edl = edl .. ",codec=" .. codec
+                end
+                edl = edl .. ";" .. edl_escape(sub)
+                local title = sub_info.name or sub_info.ext
+                mp.commandv("sub-add", edl, "auto", title, lang)
+            else
+                msg.verbose("No subtitle data/url for ["..lang.."]")
+            end
+        end
+    end
+
+    -- add chapters
+    if json.chapters then
+        msg.debug("Adding pre-parsed chapters")
+        for i = 1, #json.chapters do
+            local chapter = json.chapters[i]
+            local title = chapter.title or ""
+            if title == "" then
+                title = string.format('Chapter %02d', i)
+            end
+            table.insert(chapter_list, {time=chapter.start_time, title=title})
+        end
+    elseif not (json.description == nil) and not (json.duration == nil) then
+        chapter_list = extract_chapters(json.description, json.duration)
+    end
+
+    -- set start time
+    if (json.start_time or json.section_start) and
+        not option_was_set("start") and
+        not option_was_set_locally("start") then
+        local start_time = json.start_time or json.section_start
+        msg.debug("Setting start to: " .. start_time .. " secs")
+        mp.set_property("file-local-options/start", start_time)
+    end
+
+    -- set end time
+    if (json.end_time or json.section_end) and
+        not option_was_set("end") and
+        not option_was_set_locally("end") then
+        local end_time = json.end_time or json.section_end
+        msg.debug("Setting end to: " .. end_time .. " secs")
+        mp.set_property("file-local-options/end", end_time)
+    end
+
+    -- set aspect ratio for anamorphic video
+    if not (json.stretched_ratio == nil) and
+        not option_was_set("video-aspect-override") then
+        mp.set_property('file-local-options/video-aspect-override', json.stretched_ratio)
+    end
+
+    local stream_opts = mp.get_property_native("file-local-options/stream-lavf-o", {})
+
+    -- for rtmp
+    if (json.protocol == "rtmp") then
+        stream_opts = append_libav_opt(stream_opts,
+            "rtmp_tcurl", streamurl)
+        stream_opts = append_libav_opt(stream_opts,
+            "rtmp_pageurl", json.page_url)
+        stream_opts = append_libav_opt(stream_opts,
+            "rtmp_playpath", json.play_path)
+        stream_opts = append_libav_opt(stream_opts,
+            "rtmp_swfverify", json.player_url)
+        stream_opts = append_libav_opt(stream_opts,
+            "rtmp_swfurl", json.player_url)
+        stream_opts = append_libav_opt(stream_opts,
+            "rtmp_app", json.app)
+    end
+
+    if json.proxy and json.proxy ~= "" then
+        stream_opts = append_libav_opt(stream_opts,
+            "http_proxy", json.proxy)
+    end
+
+    mp.set_property_native("file-local-options/stream-lavf-o", stream_opts)
+end
+
+local function check_version(ytdl_path)
+    local command = {
+        name = "subprocess",
+        capture_stdout = true,
+        args = {ytdl_path, "--version"}
+    }
+    local version_string = mp.command_native(command).stdout
+    local year, month, day = string.match(version_string, "(%d+).(%d+).(%d+)")
+
+    -- sanity check
+    if (tonumber(year) < 2000) or (tonumber(month) > 12) or
+        (tonumber(day) > 31) then
+        return
+    end
+    local version_ts = os.time{year=year, month=month, day=day}
+    if (os.difftime(os.time(), version_ts) > 60*60*24*90) then
+        msg.warn("It appears that your youtube-dl version is severely out of date.")
+    end
+end
+
+function run_ytdl_hook(url)
+    local start_time = os.clock()
+
+    -- strip ytdl://
+    if (url:find("ytdl://") == 1) then
+        url = url:sub(8)
+    end
+
+    local format = mp.get_property("options/ytdl-format")
+    local raw_options = mp.get_property_native("options/ytdl-raw-options")
+    local allsubs = true
+    local proxy = nil
+    local use_playlist = false
+
+    local command = {
+        ytdl.path, "--no-warnings", "-J", "--flat-playlist",
+        "--sub-format", "ass/srt/best"
+    }
+
+    -- Checks if video option is "no", change format accordingly,
+    -- but only if user didn't explicitly set one
+    if (mp.get_property("options/vid") == "no") and (#format == 0) then
+        format = "bestaudio/best"
+        msg.verbose("Video disabled. Only using audio")
+    end
+
+    if (format == "") then
+        format = "bestvideo+bestaudio/best"
+    end
+
+    if format ~= "ytdl" then
+        table.insert(command, "--format")
+        table.insert(command, format)
+    end
+
+    for param, arg in pairs(raw_options) do
+        table.insert(command, "--" .. param)
+        if (arg ~= "") then
+            table.insert(command, arg)
+        end
+        if (param == "sub-lang" or param == "sub-langs" or param == "srt-lang") and (arg ~= "") then
+            allsubs = false
+        elseif (param == "proxy") and (arg ~= "") then
+            proxy = arg
+        elseif (param == "yes-playlist") then
+            use_playlist = true
+        end
+    end
+
+    if (allsubs == true) then
+        table.insert(command, "--all-subs")
+    end
+    if not use_playlist then
+        table.insert(command, "--no-playlist")
+    end
+    table.insert(command, "--")
+    table.insert(command, url)
+
+    local result
+    if ytdl.searched then
+        result = exec(command)
+    else
+        local separator = platform_is_windows() and ";" or ":"
+        if o.ytdl_path:match("[^" .. separator .. "]") then
+            ytdl.paths_to_search = {}
+            for path in o.ytdl_path:gmatch("[^" .. separator .. "]+") do
+                table.insert(ytdl.paths_to_search, path)
+            end
+        end
+
+        for _, path in pairs(ytdl.paths_to_search) do
+            -- search for youtube-dl in mpv's config dir
+            local exesuf = platform_is_windows() and ".exe" or ""
+            local ytdl_cmd = mp.find_config_file(path .. exesuf)
+            if ytdl_cmd then
+                msg.verbose("Found youtube-dl at: " .. ytdl_cmd)
+                ytdl.path = ytdl_cmd
+                command[1] = ytdl.path
+                result = exec(command)
+                break
+            else
+                msg.verbose("No youtube-dl found with path " .. path .. exesuf .. " in config directories")
+                command[1] = path
+                result = exec(command)
+                if result.error_string == "init" then
+                    msg.verbose("youtube-dl with path " .. path .. exesuf .. " not found in PATH or not enough permissions")
+                else
+                    msg.verbose("Found youtube-dl with path " .. path .. exesuf .. " in PATH")
+                    ytdl.path = path
+                    break
+                end
+            end
+        end
+
+        ytdl.searched = true
+    end
+
+    if result.killed_by_us then
+        return
+    end
+
+    local json = result.stdout
+    local parse_err = nil
+
+    if result.status ~= 0 or json == "" then
+        json = nil
+    elseif json then
+        json, parse_err = utils.parse_json(json)
+    end
+
+    if (json == nil) then
+        msg.verbose("status:", result.status)
+        msg.verbose("reason:", result.error_string)
+        msg.verbose("stdout:", result.stdout)
+        msg.verbose("stderr:", result.stderr)
+
+        -- trim our stderr to avoid spurious newlines
+        ytdl_err = result.stderr:gsub("^%s*(.-)%s*$", "%1")
+        msg.error(ytdl_err)
+        local err = "youtube-dl failed: "
+        if result.error_string and result.error_string == "init" then
+            err = err .. "not found or not enough permissions"
+        elseif parse_err then
+            err = err .. "failed to parse JSON data: " .. parse_err
+        else
+            err = err .. "unexpected error occurred"
+        end
+        msg.error(err)
+        if parse_err or string.find(ytdl_err, "yt%-dl%.org/bug") then
+            check_version(ytdl.path)
+        end
+        return
+    end
+
+    msg.verbose("youtube-dl succeeded!")
+    msg.debug('ytdl parsing took '..os.clock()-start_time..' seconds')
+
+    json["proxy"] = json["proxy"] or proxy
+
+    -- what did we get?
+    if json["direct"] then
+        -- direct URL, nothing to do
+        msg.verbose("Got direct URL")
+        return
+    elseif (json["_type"] == "playlist")
+        or (json["_type"] == "multi_video") then
+        -- a playlist
+
+        if (#json.entries == 0) then
+            msg.warn("Got empty playlist, nothing to play.")
+            return
+        end
+
+        local self_redirecting_url =
+            json.entries[1]["_type"] ~= "url_transparent" and
+            json.entries[1]["webpage_url"] and
+            json.entries[1]["webpage_url"] == json["webpage_url"]
+
+
+        -- some funky guessing to detect multi-arc videos
+        if self_redirecting_url and #json.entries > 1
+            and json.entries[1].protocol == "m3u8_native"
+            and json.entries[1].url then
+            msg.verbose("multi-arc video detected, building EDL")
+
+            local playlist = edl_track_joined(json.entries)
+
+            msg.debug("EDL: " .. playlist)
+
+            if not playlist then
+                return
+            end
+
+            -- can't change the http headers for each entry, so use the 1st
+            set_http_headers(json.entries[1].http_headers)
+
+            mp.set_property("stream-open-filename", playlist)
+            if json.title and mp.get_property("force-media-title", "") == "" then
+                mp.set_property("file-local-options/force-media-title",
+                    json.title)
+            end
+
+            -- there might not be subs for the first segment
+            local entry_wsubs = nil
+            for i, entry in pairs(json.entries) do
+                if not (entry.requested_subtitles == nil) then
+                    entry_wsubs = i
+                    break
+                end
+            end
+
+            if not (entry_wsubs == nil) and
+                not (json.entries[entry_wsubs].duration == nil) then
+                for j, req in pairs(json.entries[entry_wsubs].requested_subtitles) do
+                    local subfile = "edl://"
+                    for i, entry in pairs(json.entries) do
+                        if not (entry.requested_subtitles == nil) and
+                            not (entry.requested_subtitles[j] == nil) and
+                            url_is_safe(entry.requested_subtitles[j].url) then
+                            subfile = subfile..edl_escape(entry.requested_subtitles[j].url)
+                        else
+                            subfile = subfile..edl_escape("memory://WEBVTT")
+                        end
+                        subfile = subfile..",length="..entry.duration..";"
+                    end
+                    msg.debug(j.." sub EDL: "..subfile)
+                    mp.commandv("sub-add", subfile, "auto", req.ext, j)
+                end
+            end
+
+        elseif self_redirecting_url and #json.entries == 1 then
+            msg.verbose("Playlist with single entry detected.")
+            add_single_video(json.entries[1])
+        else
+            local playlist_index = parse_yt_playlist(url, json)
+            local playlist = {"#EXTM3U"}
+            for i, entry in pairs(json.entries) do
+                local site = entry.url
+                local title = entry.title
+
+                if not (title == nil) then
+                    title = string.gsub(title, '%s+', ' ')
+                    table.insert(playlist, "#EXTINF:0," .. title)
+                end
+
+                --[[ some extractors will still return the full info for
+                     all clips in the playlist and the URL will point
+                     directly to the file in that case, which we don't
+                     want so get the webpage URL instead, which is what
+                     we want, but only if we aren't going to trigger an
+                     infinite loop
+                --]]
+                if entry["webpage_url"] and not self_redirecting_url then
+                    site = entry["webpage_url"]
+                end
+
+                -- links without protocol as returned by --flat-playlist
+                if not site:find("://") then
+                    -- youtube extractor provides only IDs,
+                    -- others come prefixed with the extractor name and ":"
+                    local prefix = site:find(":") and "ytdl://" or
+                        "https://youtu.be/"
+                    table.insert(playlist, prefix .. site)
+                elseif url_is_safe(site) then
+                    table.insert(playlist, site)
+                end
+
+            end
+
+            if use_playlist and
+                not option_was_set("playlist-start") and playlist_index then
+                mp.set_property_number("playlist-start", playlist_index)
+            end
+
+            mp.set_property("stream-open-filename", "memory://" .. table.concat(playlist, "\n"))
+        end
+
+    else -- probably a video
+        add_single_video(json)
+    end
+    msg.debug('script running time: '..os.clock()-start_time..' seconds')
+end
+
+if (not o.try_ytdl_first) then
+    mp.add_hook("on_load", 10, function ()
+        msg.verbose('ytdl:// hook')
+        local url = mp.get_property("stream-open-filename", "")
+        if not (url:find("ytdl://") == 1) then
+            msg.verbose('not a ytdl:// url')
+            return
+        end
+        run_ytdl_hook(url)
+    end)
+end
+
+mp.add_hook(o.try_ytdl_first and "on_load" or "on_load_fail", 10, function()
+    msg.verbose('full hook')
+    local url = mp.get_property("stream-open-filename", "")
+    if not (url:find("ytdl://") == 1) and
+        not ((url:find("https?://") == 1) and not is_blacklisted(url)) then
+        return
+    end
+    run_ytdl_hook(url)
+end)
+
+mp.add_hook("on_preloaded", 10, function ()
+    if next(chapter_list) ~= nil then
+        msg.verbose("Setting chapters")
+
+        mp.set_property_native("chapter-list", chapter_list)
+        chapter_list = {}
+    end
+end)
\ No newline at end of file