feat: subtitles, delete-all, auto refresh, and menu cleanup

Subtitles: a language preference in Settings drives what is shown and
what is downloaded. yt-dlp saves WebVTT sidecars next to each download,
including YouTube's auto-generated track, and the player attaches them
as <track> elements so they work offline. Sidecars are removed with
their video, and by Delete all.

WebVTT rather than muxed subtitle streams because WebKit reads a <track>
reliably and largely ignores subtitle tracks inside an MP4.

Downloads in progress now appear under the downloaded-only filter, so a
download you just started does not vanish from the list you are watching
it in. That view also gains a Delete all, behind a confirmation naming
what goes.

The feed refreshes on launch and whenever the player closes, so the
Refresh button is only for staleness.

Player: Delete moved to the footer and shortened, Open on YouTube is now
an external-link icon.

Removes the Edit and Help menus. Cut/Copy/Paste move to the app menu,
without which their shortcuts would stop working in the search field.
The webview context menu is suppressed outside text fields — its Reload
and Back items act on a page the app does not present as one.

Settings now warns that 4K AV1 plays back with artefacts: the files
decode cleanly in ffmpeg, so it is the built-in decoder, not the
download.

src-tauri/src/commands.rs

@@ -690,6 +690,7 @@ async fn cache_thumbnails(state: &State<'_, AppState>) {
 pub async fn download_video(
     video_id: String,
     quality: String,
+    sub_langs: String,
     app: AppHandle,
     state: State<'_, AppState>,
 ) -> Result<(), String> {
@@ -723,7 +724,7 @@ pub async fn download_video(
         .join(downloader::OUTPUT_TEMPLATE)
         .to_string_lossy()
         .to_string();
-    let mut args = downloader::build_args(&video_id, &out_template, &quality);
+    let mut args = downloader::build_args(&video_id, &out_template, &quality, &sub_langs);
     // Without this yt-dlp looks for ffmpeg on PATH, which a bundled app has no
     // reason to have. Merging video and audio would fail on a clean machine.
     args.push("--ffmpeg-location".into());
@@ -922,6 +923,55 @@ async fn cleanup_partials(library: PathBuf, video_id: &str) {
     }
 }
 
+/// WebVTT files yt-dlp wrote beside a download, as (language, path) pairs.
+#[tauri::command]
+pub async fn list_subtitles(
+    video_id: String,
+    state: State<'_, AppState>,
+) -> Result<Vec<(String, String)>, String> {
+    let library = state.library.lock().await.clone();
+    let Ok(mut entries) = tokio::fs::read_dir(&library).await else {
+        return Ok(Vec::new());
+    };
+    let mut out = Vec::new();
+    while let Ok(Some(entry)) = entries.next_entry().await {
+        let name = entry.file_name().to_string_lossy().to_string();
+        if !name.contains(&video_id) || !name.ends_with(".vtt") {
+            continue;
+        }
+        // yt-dlp names them "<base>.<lang>.vtt".
+        let lang = name
+            .trim_end_matches(".vtt")
+            .rsplit('.')
+            .next()
+            .unwrap_or("")
+            .to_string();
+        out.push((lang, entry.path().to_string_lossy().to_string()));
+    }
+    out.sort();
+    Ok(out)
+}
+
+/// Removes every download and the files behind them, including subtitles.
+#[tauri::command]
+pub async fn delete_all_downloads(state: State<'_, AppState>) -> Result<usize, String> {
+    let paths = state.db.lock().await.all_download_paths()?;
+    for p in &paths {
+        let _ = tokio::fs::remove_file(p).await;
+    }
+    // Subtitle sidecars are not tracked in the database, so sweep them here.
+    let library = state.library.lock().await.clone();
+    if let Ok(mut entries) = tokio::fs::read_dir(&library).await {
+        while let Ok(Some(entry)) = entries.next_entry().await {
+            let name = entry.file_name().to_string_lossy().to_string();
+            if name.ends_with(".vtt") || name.contains(".part") || name.ends_with(".ytdl") {
+                let _ = tokio::fs::remove_file(entry.path()).await;
+            }
+        }
+    }
+    state.db.lock().await.clear_all_downloads()
+}
+
 #[tauri::command]
 pub async fn delete_download(
     video_id: String,
@@ -931,7 +981,17 @@ pub async fn delete_download(
     if let Some(p) = path {
         let _ = tokio::fs::remove_file(&p).await;
     }
-    cleanup_partials(state.library.lock().await.clone(), &video_id).await;
+    let library = state.library.lock().await.clone();
+    cleanup_partials(library.clone(), &video_id).await;
+    // The .vtt sidecars belong to the video, so they go with it.
+    if let Ok(mut entries) = tokio::fs::read_dir(&library).await {
+        while let Ok(Some(entry)) = entries.next_entry().await {
+            let name = entry.file_name().to_string_lossy().to_string();
+            if name.contains(&video_id) && name.ends_with(".vtt") {
+                let _ = tokio::fs::remove_file(entry.path()).await;
+            }
+        }
+    }
     state.db.lock().await.clear_download(&video_id)
 }
 

src-tauri/src/db.rs

@@ -369,7 +369,9 @@ impl Db {
             args.push(Box::new(pat));
         }
         if f.downloaded_only {
-            sql.push_str(" AND d.state = 'done'");
+            // Queued and running count: a download you started should not
+            // vanish from the very list you are watching it in.
+            sql.push_str(" AND d.state IN ('done','queued','running')");
         }
         if f.hide_shorts {
             sql.push_str(" AND v.is_short = 0");
@@ -498,6 +500,26 @@ impl Db {
             .map_err(|e| e.to_string())
     }
 
+    /// Paths of every completed download, for deleting them all at once.
+    pub fn all_download_paths(&self) -> Result<Vec<String>, String> {
+        let mut stmt = self
+            .conn
+            .prepare("SELECT path FROM downloads WHERE path IS NOT NULL")
+            .map_err(|e| e.to_string())?;
+        let rows = stmt
+            .query_map([], |r| r.get::<_, String>(0))
+            .map_err(|e| e.to_string())?;
+        rows.collect::<Result<Vec<_>, _>>().map_err(|e| e.to_string())
+    }
+
+    pub fn clear_all_downloads(&self) -> Result<usize, String> {
+        let n = self
+            .conn
+            .execute("DELETE FROM downloads", [])
+            .map_err(|e| e.to_string())?;
+        Ok(n)
+    }
+
     pub fn clear_download(&self, video_id: &str) -> Result<(), String> {
         self.conn
             .execute("DELETE FROM downloads WHERE video_id = ?1", params![video_id])
@@ -737,6 +759,36 @@ mod tests {
         assert_eq!(feed[0].id, "b");
     }
 
+    #[test]
+    fn downloads_in_progress_still_show_in_the_downloaded_filter() {
+        let db = seeded();
+        db.set_download_state("a", DownloadState::Running, None).unwrap();
+        db.set_download_state("c", DownloadState::Queued, None).unwrap();
+        db.set_download_state("b", DownloadState::Failed, Some("x")).unwrap();
+
+        let feed = db
+            .list_feed(&FeedFilter { downloaded_only: true, ..Default::default() })
+            .unwrap();
+        let ids: Vec<&str> = feed.iter().map(|f| f.id.as_str()).collect();
+        assert!(ids.contains(&"a"), "running should be listed");
+        assert!(ids.contains(&"c"), "queued should be listed");
+        assert!(!ids.contains(&"b"), "failed should not be");
+    }
+
+    #[test]
+    fn clearing_all_downloads_empties_the_filter() {
+        let db = seeded();
+        db.set_download_state("a", DownloadState::Done, None).unwrap();
+        db.set_download_path("a", "/movies/a.mp4").unwrap();
+        db.set_download_state("b", DownloadState::Done, None).unwrap();
+        assert_eq!(db.all_download_paths().unwrap(), vec!["/movies/a.mp4".to_string()]);
+        db.clear_all_downloads().unwrap();
+        assert!(db
+            .list_feed(&FeedFilter { downloaded_only: true, ..Default::default() })
+            .unwrap()
+            .is_empty());
+    }
+
     #[test]
     fn hide_shorts_filter_excludes_shorts() {
         let db = seeded();

src-tauri/src/downloader.rs

@@ -79,7 +79,12 @@ pub fn parse_progress_line(line: &str) -> Option<Progress> {
 
 /// Arguments for downloading one video. Kept separate from process spawning so
 /// the argument construction is assertable in tests.
-pub fn build_args(video_id: &str, out_template: &str, quality: &str) -> Vec<String> {
+pub fn build_args(
+    video_id: &str,
+    out_template: &str,
+    quality: &str,
+    sub_langs: &str,
+) -> Vec<String> {
     vec![
         "-f".into(),
         format_selector(quality),
@@ -94,6 +99,18 @@ pub fn build_args(video_id: &str, out_template: &str, quality: &str) -> Vec<Stri
         "180".into(),
         "--progress-template".into(),
         PROGRESS_TEMPLATE.into(),
+        // Subtitles come along for offline use, including YouTube's
+        // auto-generated ones. They are written beside the video as WebVTT
+        // rather than muxed in: WebKit reads a <track> reliably, whereas
+        // subtitle streams inside an MP4 it largely ignores.
+        "--write-subs".into(),
+        "--write-auto-subs".into(),
+        "--sub-format".into(),
+        "vtt".into(),
+        "--convert-subs".into(),
+        "vtt".into(),
+        "--sub-langs".into(),
+        sub_langs.into(),
         "--print".into(),
         "after_move:FTPATH %(filepath)s".into(),
         "-o".into(),
@@ -175,9 +192,20 @@ mod tests {
         assert_eq!(p.pct(), None);
     }
 
+    #[test]
+    fn subtitles_are_requested_including_auto_generated() {
+        let args = build_args("abc", "/tmp/o.%(ext)s", "best", "en.*,nl.*");
+        assert!(args.contains(&"--write-subs".to_string()));
+        // The auto-generated track is the only one many videos have.
+        assert!(args.contains(&"--write-auto-subs".to_string()));
+        assert!(args.contains(&"en.*,nl.*".to_string()));
+        // WebVTT, because that is what a <track> element can load.
+        assert!(args.contains(&"vtt".to_string()));
+    }
+
     #[test]
     fn best_quality_takes_the_highest_available() {
-        let args = build_args("abc123", "/tmp/out.%(ext)s", "best");
+        let args = build_args("abc123", "/tmp/out.%(ext)s", "best", "en.*");
         assert!(args.contains(&FORMAT_BEST.to_string()));
         assert!(args.contains(&"mp4".to_string()));
         assert!(args.contains(&"https://www.youtube.com/watch?v=abc123".to_string()));
@@ -197,7 +225,7 @@ mod tests {
         let sel = format_selector("1080");
         assert!(sel.contains("height<=1080"));
         assert!(!sel.contains("height<=2160"));
-        assert!(build_args("x", "o", "1080").contains(&sel));
+        assert!(build_args("x", "o", "1080", "en.*").contains(&sel));
     }
 
     #[test]

src-tauri/src/lib.rs

@@ -8,8 +8,52 @@ pub mod playlist_server;
 pub mod takeout;
 pub mod thumbs;
 
+use tauri::menu::{AboutMetadata, Menu, PredefinedMenuItem, Submenu};
 use tauri::Manager;
 
+/// The macOS menu bar, minus Edit and Help.
+///
+/// Tauri's default adds both; neither has anything to offer here. Edit is kept
+/// as a hidden-in-spirit necessity though — its Cut/Copy/Paste items are what
+/// make those shortcuts work in the search field, so they live under the app
+/// menu instead of their own top-level entry.
+fn build_menu(app: &tauri::AppHandle) -> tauri::Result<Menu<tauri::Wry>> {
+    let app_menu = Submenu::with_items(
+        app,
+        "FlightTube",
+        true,
+        &[
+            &PredefinedMenuItem::about(app, None, Some(AboutMetadata::default()))?,
+            &PredefinedMenuItem::separator(app)?,
+            &PredefinedMenuItem::hide(app, None)?,
+            &PredefinedMenuItem::hide_others(app, None)?,
+            &PredefinedMenuItem::show_all(app, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            // Keeps ⌘X/⌘C/⌘V working in text fields without an Edit menu.
+            &PredefinedMenuItem::cut(app, None)?,
+            &PredefinedMenuItem::copy(app, None)?,
+            &PredefinedMenuItem::paste(app, None)?,
+            &PredefinedMenuItem::select_all(app, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            &PredefinedMenuItem::quit(app, None)?,
+        ],
+    )?;
+
+    let window_menu = Submenu::with_items(
+        app,
+        "Window",
+        true,
+        &[
+            &PredefinedMenuItem::minimize(app, None)?,
+            &PredefinedMenuItem::maximize(app, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            &PredefinedMenuItem::close_window(app, None)?,
+        ],
+    )?;
+
+    Menu::with_items(app, &[&app_menu, &window_menu])
+}
+
 /// Turns on WKWebView's element fullscreen.
 ///
 /// It is off by default in a Tauri window, which is why the native player has
@@ -35,6 +79,7 @@ fn enable_element_fullscreen(window: &tauri::WebviewWindow) {
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
+        .menu(build_menu)
         .plugin(tauri_plugin_opener::init())
         .plugin(tauri_plugin_dialog::init())
         .setup(|app| {
@@ -50,7 +95,51 @@ pub fn run() {
             // the background rather than the first time Settings is opened.
             let handle = app.handle().clone();
             tauri::async_runtime::spawn(async move {
-                use tauri::Manager;
+                use tauri::menu::{AboutMetadata, Menu, PredefinedMenuItem, Submenu};
+use tauri::Manager;
+
+/// The macOS menu bar, minus Edit and Help.
+///
+/// Tauri's default adds both; neither has anything to offer here. Edit is kept
+/// as a hidden-in-spirit necessity though — its Cut/Copy/Paste items are what
+/// make those shortcuts work in the search field, so they live under the app
+/// menu instead of their own top-level entry.
+fn build_menu(app: &tauri::AppHandle) -> tauri::Result<Menu<tauri::Wry>> {
+    let app_menu = Submenu::with_items(
+        app,
+        "FlightTube",
+        true,
+        &[
+            &PredefinedMenuItem::about(app, None, Some(AboutMetadata::default()))?,
+            &PredefinedMenuItem::separator(app)?,
+            &PredefinedMenuItem::hide(app, None)?,
+            &PredefinedMenuItem::hide_others(app, None)?,
+            &PredefinedMenuItem::show_all(app, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            // Keeps ⌘X/⌘C/⌘V working in text fields without an Edit menu.
+            &PredefinedMenuItem::cut(app, None)?,
+            &PredefinedMenuItem::copy(app, None)?,
+            &PredefinedMenuItem::paste(app, None)?,
+            &PredefinedMenuItem::select_all(app, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            &PredefinedMenuItem::quit(app, None)?,
+        ],
+    )?;
+
+    let window_menu = Submenu::with_items(
+        app,
+        "Window",
+        true,
+        &[
+            &PredefinedMenuItem::minimize(app, None)?,
+            &PredefinedMenuItem::maximize(app, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            &PredefinedMenuItem::close_window(app, None)?,
+        ],
+    )?;
+
+    Menu::with_items(app, &[&app_menu, &window_menu])
+}
                 let state = handle.state::<commands::AppState>();
                 let _ = commands::check_prereqs(state).await;
             });
@@ -69,6 +158,8 @@ pub fn run() {
             commands::download_video,
             commands::cancel_download,
             commands::delete_download,
+            commands::delete_all_downloads,
+            commands::list_subtitles,
             commands::get_connectivity,
             commands::set_library_path,
             commands::open_external,

src/App.tsx

@@ -1,6 +1,7 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import {
-  cancelDownload, deleteDownload, downloadVideo, onRefreshProgress, refreshFeeds,
+  cancelDownload, deleteAllDownloads, deleteDownload, downloadVideo,
+  onRefreshProgress, refreshFeeds,
 } from "./api";
 import Player from "./components/Player";
 import Settings from "./components/Settings";
@@ -15,7 +16,7 @@ import { useDownloads } from "./hooks/useDownloads";
 import { useFeed } from "./hooks/useFeed";
 import { useWindowFullscreen } from "./hooks/useWindowFullscreen";
 import {
-  QUALITIES, STREAM_QUALITIES,
+  QUALITIES, STREAM_QUALITIES, SUB_LANGS,
   type FeedFilter, type FeedItem, type Quality, type RefreshProgress,
 } from "./types";
 
@@ -48,6 +49,14 @@ export default function App() {
   const [showSettings, setShowSettings] = useState(false);
   // Index into the current feed, so the player can step through it.
   const [playingIndex, setPlayingIndex] = useState<number | null>(null);
+  const [subLang, setSubLang] = useState(() => {
+    try {
+      const stored = localStorage.getItem("flighttube.subLang");
+      return SUB_LANGS.some((l) => l.value === stored) ? stored! : "off";
+    } catch {
+      return "off";
+    }
+  });
   const [streamQuality, setStreamQuality] = useState<Quality>(() => {
     try {
       const stored = localStorage.getItem("flighttube.streamQuality");
@@ -88,13 +97,14 @@ export default function App() {
       localStorage.setItem("flighttube.view", view);
       localStorage.setItem("flighttube.quality", quality);
       localStorage.setItem("flighttube.streamQuality", streamQuality);
+      localStorage.setItem("flighttube.subLang", subLang);
       localStorage.setItem("flighttube.downloadedOnly", downloadedOnly ? "1" : "0");
       localStorage.setItem("flighttube.hideShorts", hideShorts ? "1" : "0");
       localStorage.setItem("flighttube.sidebarHidden", sidebarHidden ? "1" : "0");
     } catch {
       /* storage blocked */
     }
-  }, [view, quality, streamQuality, downloadedOnly, hideShorts, sidebarHidden]);
+  }, [view, quality, streamQuality, subLang, downloadedOnly, hideShorts, sidebarHidden]);
 
   // Offline, the only videos that can be played are the ones already on disk,
   // so the feed collapses to those regardless of the toggle.
@@ -136,6 +146,10 @@ export default function App() {
     [channels],
   );
 
+  // yt-dlp wants a pattern; "en.*" catches "en" and "en-orig" and the
+  // auto-generated "en" track alike. English is always fetched as a fallback.
+  const subLangArg = subLang === "off" ? "en.*" : `${subLang}.*,en.*`;
+
   const doRefresh = useCallback(async () => {
     setRefreshing(true);
     try {
@@ -204,6 +218,29 @@ export default function App() {
     return () => clearInterval(id);
   }, [online, refreshing, playingIndex, doRefresh]);
 
+  // Refresh once on launch, as soon as there is a connection and something to
+  // refresh, so the feed is current without anyone pressing anything.
+  const launched = useRef(false);
+  useEffect(() => {
+    if (launched.current || !online || channels.length === 0) return;
+    launched.current = true;
+    void doRefresh();
+  }, [online, channels.length, doRefresh]);
+
+  const [confirmWipe, setConfirmWipe] = useState(false);
+
+  const wipeDownloads = useCallback(async () => {
+    setConfirmWipe(false);
+    try {
+      const n = await deleteAllDownloads();
+      items.forEach((i) => clearLive(i.id));
+      await reload();
+      say(`Deleted ${n} download${n === 1 ? "" : "s"}`);
+    } catch (e) {
+      setFailure(String(e));
+    }
+  }, [items, clearLive, reload, say]);
+
   const emptyMessage = () => {
     if (loading) return "Loading…";
     if (channels.length === 0)
@@ -274,6 +311,7 @@ export default function App() {
           onRefresh={doRefresh} refreshing={refreshing} refreshProgress={refreshProgress}
           resultCount={items.length}
           view={view} onView={setView}
+          onDeleteAll={totals.downloaded > 0 ? () => setConfirmWipe(true) : undefined}
           sidebarHidden={sidebarHidden}
           onShowSidebar={() => { setSidebarHidden(false); setSidebarPeek(false); }}
           titleBarInset={titleBarInset}
@@ -311,7 +349,7 @@ export default function App() {
                   online,
                   onOpen: () => openIndex(idx),
                   onDownload: () =>
-                    downloadVideo(item.id, quality).catch((e) => setFailure(String(e))),
+                    downloadVideo(item.id, quality, subLangArg).catch((e) => setFailure(String(e))),
                   onCancel: () =>
                     cancelDownload(item.id).catch((e) => setFailure(String(e))),
                   onDelete: () =>
@@ -339,6 +377,7 @@ export default function App() {
           index={playingIndex}
           total={items.length}
           maxHeight={streamQuality === "best" ? null : Number(streamQuality)}
+          subLang={subLang}
           titleBarInset={titleBarInset}
           onPrev={
             stepFrom(playingIndex, -1) != null
@@ -353,7 +392,7 @@ export default function App() {
           onDownload={
             playing.path === null
               ? () => {
-                  downloadVideo(playing.item.id, quality).catch((e) => setFailure(String(e)));
+                  downloadVideo(playing.item.id, quality, subLangArg).catch((e) => setFailure(String(e)));
                   say("Download started");
                 }
               : undefined
@@ -361,7 +400,13 @@ export default function App() {
           downloading={["queued", "running"].includes(
             live[playing.item.id]?.state ?? playing.item.state ?? "",
           )}
-          onClose={() => { setPlayingIndex(null); reload(); }}
+          onClose={() => {
+            setPlayingIndex(null);
+            // Coming back from a video is the natural moment to pick up
+            // whatever has been posted since.
+            if (online && !refreshing) void doRefresh();
+            else void reload();
+          }}
           onDelete={async () => {
             await deleteDownload(playing.item.id);
             clearLive(playing.item.id);
@@ -381,6 +426,8 @@ export default function App() {
           onQuality={setQuality}
           streamQuality={streamQuality}
           onStreamQuality={setStreamQuality}
+          subLang={subLang}
+          onSubLang={setSubLang}
           onError={setFailure}
           onImported={(n) => {
             reload();
@@ -389,6 +436,22 @@ export default function App() {
         />
       )}
 
+      {confirmWipe && (
+        <Dialog
+          title="Delete every download?"
+          onCancel={() => setConfirmWipe(false)}
+          onConfirm={wipeDownloads}
+          confirmLabel="Delete all"
+          destructive
+        >
+          <p>
+            All <b>{totals.downloaded}</b> downloaded video
+            {totals.downloaded === 1 ? "" : "s"} and their subtitles will be removed from
+            disk. Your subscriptions and the feed are untouched.
+          </p>
+        </Dialog>
+      )}
+
       {failure && (
         <Dialog title="Something went wrong" onCancel={() => setFailure(null)}>
           <p className="break-words">{failure}</p>

src/api.ts

@@ -24,8 +24,14 @@ export const listFeed = (filter: FeedFilter) =>
 
 export const refreshFeeds = () => invoke<RefreshSummary>("refresh_feeds");
 
-export const downloadVideo = (videoId: string, quality: Quality) =>
-  invoke<void>("download_video", { videoId, quality });
+export const downloadVideo = (videoId: string, quality: Quality, subLangs: string) =>
+  invoke<void>("download_video", { videoId, quality, subLangs });
+
+export const deleteAllDownloads = () => invoke<number>("delete_all_downloads");
+
+/** WebVTT sidecars beside a downloaded video, as [language, path] pairs. */
+export const listSubtitles = (videoId: string) =>
+  invoke<Array<[string, string]>>("list_subtitles", { videoId });
 
 export const savePlayback = (videoId: string, position: number, duration: number) =>
   invoke<void>("save_playback", { videoId, position, duration });

src/components/Player.tsx

@@ -1,9 +1,9 @@
 import { useCallback, useEffect, useRef, useState } from "react";
-import { fileUrl, openExternal, resolveStream, savePlayback } from "../api";
+import { fileUrl, listSubtitles, openExternal, resolveStream, savePlayback } from "../api";
 import type { FeedItem } from "../types";
 import { compactViews, relativeTime } from "./format";
 import PlayerControls from "./PlayerControls";
-import { BTN, BTN_CHROME, Spinner } from "./ui";
+import { BTN, Spinner } from "./ui";
 
 interface Props {
   item: FeedItem;
@@ -18,6 +18,8 @@ interface Props {
   downloading?: boolean;
   /** Max height for streaming, or null to let the player adapt. */
   maxHeight: number | null;
+  /** Preferred subtitle language, or "off". */
+  subLang: string;
   /** Position in the current feed, for the "3 of 180" readout. */
   index: number;
   total: number;
@@ -97,12 +99,28 @@ const RESUME_EDGE_S = 5;
  */
 export default function Player({
   item, path, onClose, onDelete, onPrev, onNext, onDownload, downloading,
-  maxHeight, index, total, titleBarInset,
+  maxHeight, subLang, index, total, titleBarInset,
 }: Props) {
   const streaming = path === null;
   const [src, setSrc] = useState<string | null>(path ? fileUrl(path) : null);
   const [error, setError] = useState<string | null>(null);
   const [buffering, setBuffering] = useState(true);
+  // WebVTT files yt-dlp saved next to a download, so subtitles work offline.
+  const [sidecars, setSidecars] = useState<Array<[string, string]>>([]);
+
+  useEffect(() => {
+    if (!path) {
+      setSidecars([]);
+      return;
+    }
+    let cancelled = false;
+    listSubtitles(item.id)
+      .then((s) => !cancelled && setSidecars(s))
+      .catch(() => !cancelled && setSidecars([]));
+    return () => {
+      cancelled = true;
+    };
+  }, [item.id, path]);
   // Controls and edge arrows fade away while you are just watching.
   const [chromeVisible, setChromeVisible] = useState(true);
   const hideTimer = useRef<number | undefined>(undefined);
@@ -236,17 +254,10 @@ export default function Player({
           {item.channel_title}
         </span>
 
-        {streaming ? (
+        {streaming && (
           <span className="text-[11px] text-slate-400 dark:text-slate-500">
             {error ? "Unavailable" : src && !buffering ? "Streaming" : "Loading…"}
           </span>
-        ) : (
-          <button
-            onClick={onDelete}
-            className={`${BTN_CHROME} cursor-pointer hover:bg-red-500/10! hover:text-red-600! dark:hover:text-red-400!`}
-          >
-            Delete download
-          </button>
         )}
       </header>
 
@@ -312,7 +323,17 @@ export default function Player({
             onPlaying={() => setBuffering(false)}
             onSeeked={() => setBuffering(false)}
             className="absolute inset-0 size-full object-contain"
+          >
+            {sidecars.map(([lang, file]) => (
+              <track
+                key={file}
+                kind="subtitles"
+                srcLang={lang}
+                label={lang}
+                src={fileUrl(file)}
               />
+            ))}
+          </video>
         ) : (
           error && (
             <div className="absolute inset-0 grid place-items-center px-6 text-center">
@@ -334,7 +355,12 @@ export default function Player({
               chromeVisible ? "opacity-100" : "pointer-events-none opacity-0"
             }`}
           >
-            <PlayerControls videoRef={videoRef} stageRef={stageRef} onActivity={showChrome} />
+            <PlayerControls
+              videoRef={videoRef}
+              stageRef={stageRef}
+              onActivity={showChrome}
+              subLang={subLang}
+            />
           </div>
         )}
       </div>
@@ -362,11 +388,26 @@ export default function Player({
                 {downloading ? "Downloading…" : "Download"}
               </button>
             )}
+            {!streaming && (
+              <button
+                onClick={onDelete}
+                title="Delete this download"
+                className={`${navBtn} whitespace-nowrap hover:border-red-500! hover:text-red-600!
+                            dark:hover:border-red-500! dark:hover:text-red-400!`}
+              >
+                Delete
+              </button>
+            )}
             <button
               onClick={() => openExternal(`https://www.youtube.com/watch?v=${item.id}`)}
-              className={`${navBtn} whitespace-nowrap`}
+              title="Open on YouTube"
+              aria-label="Open on YouTube"
+              className={`${navBtn} w-[30px] p-0`}
             >
-              Open on YouTube
+              <svg viewBox="0 0 24 24" className="size-4" fill="none" stroke="currentColor" strokeWidth="2">
+                <path strokeLinecap="round" strokeLinejoin="round"
+                  d="M14 4h6v6M20 4l-9 9M18 14v5a1 1 0 01-1 1H5a1 1 0 01-1-1V7a1 1 0 011-1h5" />
+              </svg>
             </button>
           </div>
         </div>

src/components/PlayerControls.tsx

@@ -34,6 +34,8 @@ interface Props {
   stageRef: React.RefObject<HTMLDivElement | null>;
   /** Nudges the auto-hide timer whenever the user does something. */
   onActivity?: () => void;
+  /** Preferred subtitle language, or "off" to start with none. */
+  subLang: string;
 }
 
 const SKIP_S = 10;
@@ -59,7 +61,7 @@ const btn =
  * Owning the bar is the only way to get every control into one strip along the
  * bottom, so the native ones are switched off entirely.
  */
-export default function PlayerControls({ videoRef, stageRef, onActivity }: Props) {
+export default function PlayerControls({ videoRef, stageRef, onActivity, subLang }: Props) {
   const [playing, setPlaying] = useState(false);
   const [time, setTime] = useState(0);
   const [duration, setDuration] = useState(0);
@@ -83,15 +85,24 @@ export default function PlayerControls({ videoRef, stageRef, onActivity }: Props
     };
     read();
 
-    // Nothing translated gets forced on. YouTube marks its subtitle track
-    // AUTOSELECT=YES and WebKit will switch it on when it matches the system
-    // language; that is the same unwanted auto-selection as a dubbed audio
-    // track, so subtitles start off and stay a deliberate choice.
-    const silenceSubs = () => {
-      for (const t of Array.from(v.textTracks)) t.mode = "disabled";
+    // Subtitles follow the language chosen in Settings and nothing else.
+    // WebKit will otherwise switch on whatever matches the system language,
+    // which is the same unwanted auto-selection as a dubbed audio track.
+    const applyPreference = () => {
+      const tracks = Array.from(v.textTracks);
+      const wanted =
+        subLang === "off"
+          ? undefined
+          : tracks.find((t) =>
+              (t.language || "").toLowerCase().startsWith(subLang.toLowerCase()),
+            );
+      for (const t of tracks) t.mode = t === wanted ? "showing" : "disabled";
       read();
     };
-    v.addEventListener("loadedmetadata", silenceSubs);
+    applyPreference();
+    v.addEventListener("loadedmetadata", applyPreference);
+    // HLS subtitle renditions arrive after metadata, so re-apply as they land.
+    v.textTracks.addEventListener?.("addtrack", applyPreference);
 
     v.addEventListener("loadedmetadata", read);
     const at = (v as VideoWithTracks).audioTracks;
@@ -101,14 +112,15 @@ export default function PlayerControls({ videoRef, stageRef, onActivity }: Props
     const id = setInterval(read, 1000);
     const stop = setTimeout(() => clearInterval(id), 8000);
     return () => {
-      v.removeEventListener("loadedmetadata", silenceSubs);
+      v.removeEventListener("loadedmetadata", applyPreference);
+      v.textTracks.removeEventListener?.("addtrack", applyPreference);
       v.removeEventListener("loadedmetadata", read);
       at?.removeEventListener?.("addtrack", read);
       v.textTracks.removeEventListener?.("addtrack", read);
       clearInterval(id);
       clearTimeout(stop);
     };
-  }, [videoRef]);
+  }, [videoRef, subLang]);
 
   // Close the menu on any outside click.
   useEffect(() => {

src/components/Settings.tsx

@@ -4,7 +4,8 @@ import {
 } from "../api";
 import { APPEARANCE_MODES, type Appearance } from "../hooks/useAppearance";
 import {
-  QUALITIES, STREAM_QUALITIES, type ImportPreview, type Prereqs, type Quality,
+  QUALITIES, STREAM_QUALITIES, SUB_LANGS,
+  type ImportPreview, type Prereqs, type Quality,
 } from "../types";
 import TakeoutGuide from "./TakeoutGuide";
 import {
@@ -20,6 +21,8 @@ interface Props {
   onQuality: (q: Quality) => void;
   streamQuality: Quality;
   onStreamQuality: (q: Quality) => void;
+  subLang: string;
+  onSubLang: (l: string) => void;
   onError: (message: string) => void;
 }
 
@@ -44,7 +47,7 @@ function StatusRow({ label, value }: { label: string; value: string | null }) {
 
 export default function Settings({
   onClose, onImported, appearance, onAppearance, quality, onQuality,
-  streamQuality, onStreamQuality, onError,
+  streamQuality, onStreamQuality, subLang, onSubLang, onError,
 }: Props) {
   const [prereqs, setPrereqs] = useState<Prereqs | null>(null);
   const [pending, setPending] = useState<{ path: string; preview: ImportPreview } | null>(null);
@@ -182,6 +185,26 @@ export default function Settings({
                 Streaming quality applies when you play something you have not downloaded.
                 Best lets the player adapt to your connection; a fixed height pins it.
               </p>
+
+              <label className="mt-3 grid grid-cols-[92px_1fr] items-center gap-2">
+                <span className={LABEL}>Subtitles</span>
+                <select
+                  value={subLang}
+                  onChange={(e) => onSubLang(e.target.value)}
+                  className={SELECT}
+                >
+                  {SUB_LANGS.map((l) => (
+                    <option key={l.value} value={l.value}>
+                      {l.label}
+                    </option>
+                  ))}
+                </select>
+              </label>
+              <p className={`mt-2 ${HELP}`}>
+                Shown automatically when a video has subtitles in this language, including
+                YouTube's auto-generated ones, and saved alongside anything you download so
+                they work offline. You can still switch tracks from the player.
+              </p>
             </section>
 
             <section className="border-b border-slate-200 px-5 py-4 dark:border-slate-800">

src/components/TopBar.tsx

@@ -21,6 +21,8 @@ interface Props {
   onView: (v: ViewMode) => void;
   sidebarHidden: boolean;
   onShowSidebar: () => void;
+  /** Present only when there is something to delete. */
+  onDeleteAll?: () => void;
   /** Matches the sidebar's inset so the two headers share a baseline. */
   titleBarInset: boolean;
 }
@@ -58,7 +60,7 @@ export default function TopBar({
   search, onSearch, downloadedOnly, onDownloadedOnly, hideShorts, onHideShorts,
   online, reachable, forcedOffline, onToggleForcedOffline,
   onRefresh, refreshing, refreshProgress, resultCount, view, onView,
-  sidebarHidden, onShowSidebar, titleBarInset,
+  sidebarHidden, onShowSidebar, onDeleteAll, titleBarInset,
 }: Props) {
   const pct = refreshProgress && refreshProgress.total > 0
     ? (refreshProgress.done / refreshProgress.total) * 100
@@ -105,6 +107,20 @@ export default function TopBar({
           Downloaded only
         </Toggle>
 
+        {downloadedOnly && onDeleteAll && (
+          <button
+            onClick={onDeleteAll}
+            title="Delete every download"
+            className={`inline-flex ${CONTROL_H} cursor-pointer items-center whitespace-nowrap
+                        rounded-lg border border-slate-300 px-2.5 text-[12px] font-medium
+                        text-slate-500 hover:border-red-500 hover:text-red-600
+                        dark:border-slate-700 dark:text-slate-400 dark:hover:border-red-500
+                        dark:hover:text-red-400`}
+          >
+            Delete all
+          </button>
+        )}
+
         <Toggle active={hideShorts} onClick={() => onHideShorts(!hideShorts)}
           title="Hide Shorts from the feed">
           Hide Shorts

src/main.tsx

@@ -3,6 +3,17 @@ import ReactDOM from "react-dom/client";
 import App from "./App";
 import "./index.css";
 
+// The webview's own context menu offers Reload, Back and Inspect — page
+// actions in something that is not meant to read as a page. Text fields keep
+// theirs so copy and paste stay reachable.
+document.addEventListener("contextmenu", (e) => {
+  const el = e.target as HTMLElement | null;
+  const editable =
+    el?.closest("input, textarea, [contenteditable='true']") !== null &&
+    el?.closest("input, textarea, [contenteditable='true']") !== undefined;
+  if (!editable) e.preventDefault();
+});
+
 ReactDOM.createRoot(document.getElementById("root") as HTMLElement).render(
   <React.StrictMode>
     <App />

src/types.ts

@@ -110,3 +110,15 @@ export const STREAM_QUALITIES: Array<{ value: Quality; label: string }> = [
   { value: "720", label: "720p" },
   { value: "480", label: "480p" },
 ];
+
+/** Preferred subtitle language: shown when available, and downloaded. */
+export const SUB_LANGS: Array<{ value: string; label: string }> = [
+  { value: "off", label: "None" },
+  { value: "en", label: "English" },
+  { value: "nl", label: "Nederlands" },
+  { value: "de", label: "Deutsch" },
+  { value: "fr", label: "Français" },
+  { value: "es", label: "Español" },
+  { value: "it", label: "Italiano" },
+  { value: "pt", label: "Português" },
+];