├── LICENSE ├── README.md ├── preview.jpg └── subtitle-lines.lua /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. 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It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | 294 | Copyright (C) 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | , 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # mpv-subtitle-lines 2 | List and search subtitle lines of the selected subtitle track, that mpv has already loaded internally. 3 | No need for external tools (e.g. ffmpeg), no need to reload the same subtitles mpv has already loaded. 4 | 5 | Select a line to seek to it's start time. 6 | 7 | ![screenshot](preview.jpg) 8 | 9 | Requires [uosc](https://github.com/tomasklaen/uosc) 5.4.0 or newer. 10 | 11 | ## Installation 12 | 1. Save the `subtitle-lines.lua` into your [scripts directory](https://mpv.io/manual/stable/#script-location) 13 | 2. Set key bindings in [`input.conf`](https://mpv.io/manual/stable/#input-conf) 14 | ``` 15 | Ctrl+f script-binding subtitle_lines/list_subtitles 16 | Ctrl+F script-binding subtitle_lines/list_secondary_subtitles 17 | ``` 18 | 19 | ## Recommended usage 20 | 21 | When turning on subtitles, mpv loads subtitles from the current playback time forward. Therefore it is recommended to always have subtitles selected. 22 | For example here is a `mpv.conf` configuration for English and German, with a preference for English. 23 | ```ini 24 | slang=eng,ger 25 | subs-with-matching-audio=yes 26 | ytdl-raw-options-append=sub-langs=en.*,de.* 27 | ``` 28 | 29 | ### "But I don't want to always see subtitles." 30 | 31 | Then hide them when the audio language is a language you understand using a [conditional auto profile](https://mpv.io/manual/master/#conditional-auto-profiles). 32 | For example to hide subtitles when the audio language is English or German and the subtitles are not forced: 33 | ```ini 34 | [hide-subtitles] 35 | profile-cond=not get('current-tracks/sub/forced') and (function() local hide_for = {'en','eng','de','deu','ger'} local a = get('current-tracks/audio/lang') a = a and a:match('^%w+') for _, hl in ipairs(hide_for) do if a == hl then return true end end end)() 36 | profile-restore=copy 37 | sub-visibility=no 38 | ``` 39 | 40 | Unfortunately the audio track doesn't always have a language set, in which case the subtitles won't be hidden with this. However that situation seems to be rare in practice. 41 | 42 | ## Current limitations 43 | 44 | * Only lists subtitles that mpv has loaded internally. 45 | * After seeking mpv only provides the current subtitle line and requires some (short) playback for the other lines to become available. 46 | 47 | Resolving those requires changes to mpv or the use of external tools. -------------------------------------------------------------------------------- /preview.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/christoph-heinrich/mpv-subtitle-lines/f808db322fb9aff5bb4bf217aa49ccd78c33ec1e/preview.jpg -------------------------------------------------------------------------------- /subtitle-lines.lua: -------------------------------------------------------------------------------- 1 | -- subtitle-lines 1.2.0 - 2025-May-21 2 | -- https://github.com/christoph-heinrich/mpv-subtitle-lines 3 | -- 4 | -- List and search subtitle lines of the selected subtitle track. 5 | -- 6 | -- Usage: 7 | -- add bindings to input.conf: 8 | -- Ctrl+f script-binding subtitle_lines/list_subtitles 9 | -- Ctrl+F script-binding subtitle_lines/list_secondary_subtitles 10 | 11 | local mp = require 'mp' 12 | local utils = require 'mp.utils' 13 | local script_name = mp.get_script_name() 14 | 15 | local opts = { 16 | seek_offset = -5 17 | } 18 | (require 'mp.options').read_options(opts, script_name, function() end) 19 | 20 | -- https://github.com/mpv-player/mpv/blob/a5c32ea52e6f943a4221f6f18239510502d9b3e4/sub/sd.h#L13 21 | local SUB_SEEK_OFFSET = 0.01 22 | 23 | -- split str into a table 24 | -- example: local t = split(s, "\n") 25 | -- plain: whether pat is a plain string (default false - pat is a pattern) 26 | local function split(str, pat, plain) 27 | local init = 1 28 | local r, i, find, sub = {}, 1, string.find, string.sub 29 | repeat 30 | local f0, f1 = find(str, pat, init, plain) 31 | r[i], i = sub(str, init, f0 and f0 - 1), i + 1 32 | init = f0 and f1 + 1 or 0 33 | until f0 == nil 34 | return r 35 | end 36 | 37 | local sub_strings_available = { 38 | primary = { 39 | text = 'sub-text', 40 | start = 'sub-start', 41 | ['end'] = 'sub-end', 42 | visibility = 'sub-visibility', 43 | delay = 'sub-delay', 44 | step = 'primary', 45 | title = 'Subtitle lines', 46 | }, 47 | secondary = { 48 | text = 'secondary-sub-text', 49 | start = 'secondary-sub-start', 50 | ['end'] = 'secondary-sub-end', 51 | visibility = 'secondary-sub-visibility', 52 | delay = 'secondary-sub-delay', 53 | step = 'secondary', 54 | title = 'Secondary subtitle lines', 55 | } 56 | } 57 | 58 | ---@alias Subtitle {start:number;stop:number;line:string;timespan:string} 59 | 60 | local sub_strings = sub_strings_available.primary 61 | local function get_current_subtitle_lines() 62 | local start = mp.get_property_number(sub_strings.start) 63 | local stop = mp.get_property_number(sub_strings['end']) 64 | local text = mp.get_property(sub_strings.text) 65 | local lines = text and text:match('^[%s\n]*(.-)[%s\n]*$') or '' 66 | return start, stop, text, split(lines, '%s*\n%s*', false) 67 | end 68 | 69 | local function same_time(t1, t2) 70 | -- misses some merges if offset isn't doubled (0.012 already works in testing) 71 | return math.abs(t1 - t2) < SUB_SEEK_OFFSET * 2 72 | end 73 | 74 | ---Merge lines with already collected subtitles 75 | ---removes merged lines from the lines array 76 | ---@param prev_subs_visible Subtitle[] 77 | ---@param start number 78 | ---@param stop number 79 | ---@param lines string[] 80 | ---@return string[] 81 | local function merge_subtitle_lines(prev_subs_visible, start, stop, lines) 82 | -- merge identical lines that overlap or are right after each other 83 | for _, subtitle in ipairs(prev_subs_visible) do 84 | if subtitle.stop >= start or same_time(subtitle.stop, start) then 85 | for i = #lines, 1, -1 do 86 | if lines[i] == subtitle.line then 87 | table.remove(lines, i) 88 | if start < subtitle.start then subtitle.start = start end 89 | if stop > subtitle.stop then subtitle.stop = stop end 90 | end 91 | end 92 | end 93 | end 94 | return lines 95 | end 96 | 97 | ---Fix end time of already collected subtitles and finds the currect start time 98 | ---for current lines 99 | ---@param prev_subs_visible Subtitle[] 100 | ---@param lines string[] 101 | ---@param start number 102 | ---@param prev_start number 103 | ---@return number 104 | local function fix_line_timing(prev_subs_visible, lines, start, prev_start) 105 | -- detect subtitles appearing after their reported sub-start time 106 | if start == prev_start then 107 | local start_approx = mp.get_property_number('time-pos', 0) - mp.get_property_number(sub_strings.delay) - SUB_SEEK_OFFSET 108 | -- 0.1s tolarance to avoid false positives 109 | if start_approx - start > 0.1 then 110 | start = start_approx 111 | end 112 | end 113 | for _, subtitle in ipairs(prev_subs_visible) do 114 | if subtitle.stop > start then 115 | local still_visible = false 116 | for _, line in ipairs(lines) do 117 | if subtitle.line == line then 118 | still_visible = true 119 | break 120 | end 121 | end 122 | if not still_visible then 123 | subtitle.stop = start 124 | end 125 | end 126 | end 127 | return start 128 | end 129 | 130 | ---Get lines form current subtitle track 131 | ---@return Subtitle[] 132 | local function acquire_subtitles() 133 | local sub_delay = mp.get_property_number(sub_strings.delay) 134 | local sub_visibility = mp.get_property_bool(sub_strings.visibility) 135 | mp.set_property_bool(sub_strings.visibility, false) 136 | 137 | -- go to the first subtitle line 138 | mp.commandv('set', sub_strings.delay, mp.get_property_number('duration', 0) + 365 * 24 * 60 * 60) 139 | mp.commandv('sub-step', 1, sub_strings.step) 140 | 141 | -- this shouldn't be necessary, but it's kept just in case there actually 142 | -- are subtitles further in the past then the huge delay used above 143 | local retry_delay = sub_delay 144 | while true do 145 | mp.commandv('sub-step', -1, sub_strings.step) 146 | local delay = mp.get_property_number(sub_strings.delay) 147 | if retry_delay == delay then 148 | break 149 | end 150 | retry_delay = delay 151 | end 152 | 153 | ---@type Subtitle[] 154 | local subtitles = {} 155 | local i = 0 156 | local prev_start = -1 157 | local prev_stop = -1 158 | local prev_text = nil 159 | ---@type Subtitle[] 160 | local prev_subs_visible = {} 161 | 162 | retry_delay = nil 163 | while true do 164 | local start, stop, text, lines = get_current_subtitle_lines() 165 | if start and stop and text and (text ~= prev_text or start ~= prev_start or stop ~= prev_stop) then 166 | -- remove empty lines 167 | for j = #lines, 1, -1 do 168 | if not lines[j]:find('[^%s]') then 169 | table.remove(lines, j) 170 | end 171 | end 172 | -- remove duplicates in the current lines 173 | for j = 1, #lines do 174 | for k = #lines, j + 1, -1 do 175 | if lines[j] == lines[k] then 176 | table.remove(lines, k) 177 | end 178 | end 179 | end 180 | 181 | ---mpv reports the earliest sub-start and the latest sub-end of all 182 | ---current lines, so a line that's there for a long time 183 | ---can mess up the timing of all other current lines 184 | local start_fixed = fix_line_timing(prev_subs_visible, lines, start, prev_start) 185 | 186 | merge_subtitle_lines(prev_subs_visible, start_fixed, stop, lines) 187 | 188 | for j = #prev_subs_visible, 1, -1 do 189 | if prev_subs_visible[j].stop <= start_fixed then 190 | table.remove(prev_subs_visible, j) 191 | end 192 | end 193 | 194 | local j = #prev_subs_visible 195 | for _, line in ipairs(lines) do 196 | i = i + 1 197 | j = j + 1 198 | local subtitle = { start = start_fixed, stop = stop, line = line } 199 | subtitles[i] = subtitle 200 | prev_subs_visible[j] = subtitle 201 | end 202 | else 203 | local delay = mp.get_property_number(sub_strings.delay) 204 | if retry_delay == delay then 205 | break 206 | end 207 | retry_delay = delay 208 | end 209 | prev_start = start 210 | prev_stop = stop 211 | prev_text = text 212 | mp.commandv('sub-step', 1, sub_strings.step) 213 | end 214 | 215 | mp.set_property_number(sub_strings.delay, sub_delay) 216 | mp.set_property_bool(sub_strings.visibility, sub_visibility) 217 | 218 | for _, subtitle in ipairs(subtitles) do 219 | subtitle.timespan = mp.format_time(subtitle.start) .. '-' .. mp.format_time(subtitle.stop) 220 | end 221 | 222 | return subtitles 223 | end 224 | 225 | local function show_loading_indicator() 226 | local menu = { 227 | title = sub_strings.title, 228 | items = { { 229 | title = 'Loading...', 230 | icon = 'spinner', 231 | italic = true, 232 | muted = true, 233 | selectable = false, 234 | value = 'ignore', 235 | } }, 236 | type = 'subtitle-lines-loading', 237 | } 238 | 239 | local json = utils.format_json(menu) 240 | mp.commandv('script-message-to', 'uosc', 'open-menu', json) 241 | end 242 | 243 | local menu_open = false 244 | local function show_subtitle_list(subtitles) 245 | local menu = { 246 | title = sub_strings.title, 247 | items = {}, 248 | type = 'subtitle-lines-list', 249 | on_close = { 250 | 'script-message-to', 251 | script_name, 252 | 'uosc-menu-closed', 253 | }, 254 | callback = { mp.get_script_name(), 'menu-event' }, 255 | } 256 | 257 | local seek_offset = opts.seek_offset 258 | local last_started_index = 0 259 | local last_active_index = nil 260 | local time = mp.get_property_number('time-pos', 0) + SUB_SEEK_OFFSET 261 | for i, subtitle in ipairs(subtitles) do 262 | local has_started = subtitle.start <= time 263 | local has_ended = subtitle.stop < time 264 | local is_active = has_started and not has_ended 265 | menu.items[i] = { 266 | title = subtitle.line, 267 | hint = subtitle.timespan, 268 | active = is_active, 269 | value = tostring(math.max(0, subtitle.start + seek_offset)), 270 | } 271 | if has_started then 272 | last_started_index = i 273 | end 274 | if is_active then 275 | last_active_index = i 276 | end 277 | end 278 | menu.selected_index = last_active_index or 279 | last_started_index and subtitles[last_started_index + 1] and last_started_index + 1 or 280 | last_started_index 281 | 282 | local json = utils.format_json(menu) 283 | if menu_open then mp.commandv('script-message-to', 'uosc', 'update-menu', json) 284 | else mp.commandv('script-message-to', 'uosc', 'open-menu', json) end 285 | menu_open = true 286 | end 287 | 288 | local function close_menu() 289 | mp.commandv('script-message-to', 'uosc', 'close-menu', 'subtitle-lines-list') 290 | end 291 | 292 | ---@type Subtitle[]|nil 293 | local subtitles = nil 294 | 295 | local function sub_text_update() 296 | show_subtitle_list(subtitles) 297 | end 298 | 299 | mp.add_key_binding(nil, 'list_subtitles', function() 300 | if menu_open then 301 | close_menu() 302 | return 303 | end 304 | sub_strings = sub_strings_available.primary 305 | show_loading_indicator() 306 | subtitles = acquire_subtitles() 307 | mp.observe_property(sub_strings.text, 'string', sub_text_update) 308 | end) 309 | 310 | mp.add_key_binding(nil, 'list_secondary_subtitles', function() 311 | if menu_open then 312 | close_menu() 313 | return 314 | end 315 | sub_strings = sub_strings_available.secondary 316 | show_loading_indicator() 317 | subtitles = acquire_subtitles() 318 | mp.observe_property(sub_strings.text, 'string', sub_text_update) 319 | end) 320 | 321 | mp.register_script_message('uosc-menu-closed', function() 322 | subtitles = nil 323 | menu_open = false 324 | mp.unobserve_property(sub_text_update) 325 | end) 326 | 327 | mp.register_script_message('menu-event', function(json) 328 | local event = utils.parse_json(json) 329 | if event.type == 'activate' then 330 | mp.commandv('seek', event.value, 'absolute+exact') 331 | if not event.shift then 332 | close_menu() 333 | end 334 | end 335 | end) 336 | 337 | mp.register_event('start-file', function() 338 | close_menu() 339 | end) 340 | 341 | mp.register_event('end-file', function() 342 | close_menu() 343 | end) 344 | --------------------------------------------------------------------------------