276 lines
8.6 KiB
Lua
276 lines
8.6 KiB
Lua
-- youtube-quality.lua
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--
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-- Change youtube video quality on the fly.
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--
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-- Diplays a menu that lets you switch to different ytdl-format settings while
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-- you're in the middle of a video (just like you were using the web player).
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--
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-- Bound to ctrl-f by default.
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local mp = require 'mp'
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local utils = require 'mp.utils'
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local msg = require 'mp.msg'
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local assdraw = require 'mp.assdraw'
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local opts = {
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--key bindings
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toggle_menu_binding = "ctrl+f",
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up_binding = "UP",
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down_binding = "DOWN",
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select_binding = "ENTER",
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--formatting / cursors
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selected_and_active = "▶ - ",
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selected_and_inactive = "● - ",
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unselected_and_active = "▷ - ",
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unselected_and_inactive = "○ - ",
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--font size scales by window, if false requires larger font and padding sizes
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scale_playlist_by_window=false,
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--playlist ass style overrides inside curly brackets, \keyvalue is one field, extra \ for escape in lua
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--example {\\fnUbuntu\\fs10\\b0\\bord1} equals: font=Ubuntu, size=10, bold=no, border=1
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--read http://docs.aegisub.org/3.2/ASS_Tags/ for reference of tags
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--undeclared tags will use default osd settings
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--these styles will be used for the whole playlist. More specific styling will need to be hacked in
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--
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--(a monospaced font is recommended but not required)
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style_ass_tags = "{\\fnmonospace}",
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--paddings for top left corner
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text_padding_x = 5,
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text_padding_y = 5,
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--other
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menu_timeout = 10,
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--use youtube-dl to fetch a list of available formats (overrides quality_strings)
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fetch_formats = true,
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--default menu entries
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quality_strings=[[
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[
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{"4320p" : "bestvideo[height<=?4320p]+bestaudio/best"},
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{"2160p" : "bestvideo[height<=?2160]+bestaudio/best"},
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{"1440p" : "bestvideo[height<=?1440]+bestaudio/best"},
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{"1080p" : "bestvideo[height<=?1080]+bestaudio/best"},
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{"720p" : "bestvideo[height<=?720]+bestaudio/best"},
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{"480p" : "bestvideo[height<=?480]+bestaudio/best"},
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{"360p" : "bestvideo[height<=?360]+bestaudio/best"},
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{"240p" : "bestvideo[height<=?240]+bestaudio/best"},
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{"144p" : "bestvideo[height<=?144]+bestaudio/best"}
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]
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]],
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}
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(require 'mp.options').read_options(opts, "youtube-quality")
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opts.quality_strings = utils.parse_json(opts.quality_strings)
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local destroyer = nil
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function show_menu()
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local selected = 1
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local active = 0
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local current_ytdl_format = mp.get_property("ytdl-format")
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msg.verbose("current ytdl-format: "..current_ytdl_format)
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local num_options = 0
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local options = {}
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if opts.fetch_formats then
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options, num_options = download_formats()
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end
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if next(options) == nil then
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for i,v in ipairs(opts.quality_strings) do
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num_options = num_options + 1
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for k,v2 in pairs(v) do
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options[i] = {label = k, format=v2}
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if v2 == current_ytdl_format then
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active = i
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selected = active
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end
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end
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end
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end
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--set the cursor to the currently format
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for i,v in ipairs(options) do
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if v.format == current_ytdl_format then
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active = i
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selected = active
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break
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end
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end
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function selected_move(amt)
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selected = selected + amt
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if selected < 1 then selected = num_options
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elseif selected > num_options then selected = 1 end
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timeout:kill()
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timeout:resume()
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draw_menu()
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end
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function choose_prefix(i)
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if i == selected and i == active then return opts.selected_and_active
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elseif i == selected then return opts.selected_and_inactive end
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if i ~= selected and i == active then return opts.unselected_and_active
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elseif i ~= selected then return opts.unselected_and_inactive end
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return "> " --shouldn't get here.
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end
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function draw_menu()
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local ass = assdraw.ass_new()
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ass:pos(opts.text_padding_x, opts.text_padding_y)
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ass:append(opts.style_ass_tags)
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for i,v in ipairs(options) do
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ass:append(choose_prefix(i)..v.label.."\\N")
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end
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local w, h = mp.get_osd_size()
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if opts.scale_playlist_by_window then w,h = 0, 0 end
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mp.set_osd_ass(w, h, ass.text)
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end
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function destroy()
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timeout:kill()
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mp.set_osd_ass(0,0,"")
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mp.remove_key_binding("move_up")
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mp.remove_key_binding("move_down")
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mp.remove_key_binding("select")
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mp.remove_key_binding("escape")
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destroyer = nil
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end
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timeout = mp.add_periodic_timer(opts.menu_timeout, destroy)
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destroyer = destroy
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mp.add_forced_key_binding(opts.up_binding, "move_up", function() selected_move(-1) end, {repeatable=true})
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mp.add_forced_key_binding(opts.down_binding, "move_down", function() selected_move(1) end, {repeatable=true})
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mp.add_forced_key_binding(opts.select_binding, "select", function()
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destroy()
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mp.set_property("ytdl-format", options[selected].format)
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reload_resume()
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end)
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mp.add_forced_key_binding(opts.toggle_menu_binding, "escape", destroy)
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draw_menu()
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return
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end
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local ytdl = {
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path = "youtube-dl",
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searched = false,
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blacklisted = {}
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}
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format_cache={}
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function download_formats()
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local function exec(args)
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local ret = utils.subprocess({args = args})
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return ret.status, ret.stdout, ret
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end
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local function table_size(t)
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s = 0
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for i,v in ipairs(t) do
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s = s+1
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end
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return s
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end
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local url = mp.get_property("path")
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url = string.gsub(url, "ytdl://", "") -- Strip possible ytdl:// prefix.
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-- don't fetch the format list if we already have it
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if format_cache[url] ~= nil then
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local res = format_cache[url]
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return res, table_size(res)
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end
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mp.osd_message("fetching available formats with youtube-dl...", 60)
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if not (ytdl.searched) then
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local ytdl_mcd = mp.find_config_file("youtube-dl")
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if not (ytdl_mcd == nil) then
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msg.verbose("found youtube-dl at: " .. ytdl_mcd)
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ytdl.path = ytdl_mcd
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end
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ytdl.searched = true
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end
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local command = {ytdl.path, "--no-warnings", "--no-playlist", "-J"}
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table.insert(command, url)
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local es, json, result = exec(command)
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if (es < 0) or (json == nil) or (json == "") then
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mp.osd_message("fetching formats failed...", 1)
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msg.error("failed to get format list: " .. err)
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return {}, 0
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end
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local json, err = utils.parse_json(json)
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if (json == nil) then
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mp.osd_message("fetching formats failed...", 1)
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msg.error("failed to parse JSON data: " .. err)
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return {}, 0
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end
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res = {}
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msg.verbose("youtube-dl succeeded!")
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for i,v in ipairs(json.formats) do
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if v.vcodec ~= "none" then
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local fps = v.fps and v.fps.."fps" or ""
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local resolution = string.format("%sx%s", v.width, v.height)
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local l = string.format("%-9s %-5s (%-4s / %s)", resolution, fps, v.ext, v.vcodec)
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local f = string.format("%s+bestaudio/best", v.format_id)
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table.insert(res, {label=l, format=f, width=v.width })
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end
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end
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table.sort(res, function(a, b) return a.width > b.width end)
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mp.osd_message("", 0)
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format_cache[url] = res
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return res, table_size(res)
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end
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-- register script message to show menu
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mp.register_script_message("toggle-quality-menu",
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function()
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if destroyer ~= nil then
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destroyer()
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else
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show_menu()
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end
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end)
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-- keybind to launch menu
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mp.add_key_binding(opts.toggle_menu_binding, "quality-menu", show_menu)
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-- special thanks to reload.lua (https://github.com/4e6/mpv-reload/)
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function reload_resume()
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local playlist_pos = mp.get_property_number("playlist-pos")
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local reload_duration = mp.get_property_native("duration")
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local time_pos = mp.get_property("time-pos")
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mp.set_property_number("playlist-pos", playlist_pos)
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-- Tries to determine live stream vs. pre-recordered VOD. VOD has non-zero
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-- duration property. When reloading VOD, to keep the current time position
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-- we should provide offset from the start. Stream doesn't have fixed start.
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-- Decent choice would be to reload stream from it's current 'live' positon.
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-- That's the reason we don't pass the offset when reloading streams.
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if reload_duration and reload_duration > 0 then
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local function seeker()
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mp.commandv("seek", time_pos, "absolute")
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mp.unregister_event(seeker)
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end
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mp.register_event("file-loaded", seeker)
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end
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end
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