diff --git a/webui/index.html b/webui/index.html
index ee3b7304..1d875e8a 100644
--- a/webui/index.html
+++ b/webui/index.html
@@ -1051,6 +1051,17 @@
                                     <input type="checkbox" data-vdsc-hideowned>
                                     <span>Hide owned</span>
                                 </label>
+                                <div class="vdsc-langs" data-vdsc-langs aria-label="Rail languages" title="Which original languages show in the general rails">
+                                    <span class="vdsc-langs-label">🌐</span>
+                                    <button class="vdsc-lang vdsc-lang--on" type="button" data-lang="en">EN</button>
+                                    <button class="vdsc-lang" type="button" data-lang="ko">KO</button>
+                                    <button class="vdsc-lang" type="button" data-lang="ja">JA</button>
+                                    <button class="vdsc-lang" type="button" data-lang="es">ES</button>
+                                    <button class="vdsc-lang" type="button" data-lang="fr">FR</button>
+                                    <button class="vdsc-lang" type="button" data-lang="hi">HI</button>
+                                    <button class="vdsc-lang" type="button" data-lang="de">DE</button>
+                                    <button class="vdsc-lang" type="button" data-lang="it">IT</button>
+                                </div>
                             </div>
                             <div class="vdsc-chips" data-vdsc-chipset="genre" aria-label="Genre">
                                 <button class="vdsc-chip vdsc-chip--on" type="button" data-val="">All genres</button>
diff --git a/webui/static/video/video-discover.js b/webui/static/video/video-discover.js
index e7239b86..c574d013 100644
--- a/webui/static/video/video-discover.js
+++ b/webui/static/video/video-discover.js
@@ -333,6 +333,14 @@
             .catch(function () { /* best-effort */ });
     }
 
+    // Rebuild the whole rail stack (genre/curated shelves + the prepended personalized rows).
+    function reloadRails() {
+        renderShelves();
+        loadMoreLike();
+        loadGaps();
+        loadForYou();
+    }
+
     // ── shelves (lazy rails) ──────────────────────────────────────────────────
     function renderShelves() {
         var host = $('[data-vdsc-shelves]'); if (!host) return;
@@ -546,12 +554,30 @@
             hide.addEventListener('change', function () {
                 page.classList.toggle('vdsc-hide-owned', hide.checked);
                 try { localStorage.setItem('vdsc_hideowned', hide.checked ? '1' : '0'); } catch (e) { /* ignore */ }
-                // The rails are now server-filtered for owned (and page deeper), so rebuild
-                // them with the new state instead of just CSS-hiding cards in place.
-                renderShelves();
-                loadMoreLike();
-                loadGaps();
-                loadForYou();
+                reloadRails();   // rails are server-filtered now (owned + paged deeper) — rebuild
+            });
+        }
+        // Rail language preference — multi-select chips, persisted server-side; rebuilds the rails.
+        var langWrap = $('[data-vdsc-langs]');
+        if (langWrap) {
+            fetch('/api/video/discover/languages', { headers: { Accept: 'application/json' } })
+                .then(function (r) { return r.ok ? r.json() : null; })
+                .then(function (d) {
+                    var set = {}; ((d && d.languages) || ['en']).forEach(function (c) { set[c] = 1; });
+                    langWrap.querySelectorAll('.vdsc-lang').forEach(function (b) {
+                        b.classList.toggle('vdsc-lang--on', !!set[b.getAttribute('data-lang')]);
+                    });
+                }).catch(function () { /* default chip state stands */ });
+            langWrap.addEventListener('click', function (e) {
+                var btn = e.target.closest('.vdsc-lang'); if (!btn) return;
+                btn.classList.toggle('vdsc-lang--on');
+                var langs = Array.prototype.map.call(langWrap.querySelectorAll('.vdsc-lang--on'),
+                    function (b) { return b.getAttribute('data-lang'); });
+                if (!langs.length) { btn.classList.add('vdsc-lang--on'); return; }   // never allow empty
+                fetch('/api/video/discover/languages', {
+                    method: 'POST', headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ languages: langs }),
+                }).then(function () { reloadRails(); }).catch(function () { /* ignore */ });
             });
         }
         // Infinite scroll: a sentinel near the grid bottom pulls the next page.
diff --git a/webui/static/video/video-side.css b/webui/static/video/video-side.css
index 7b86701d..1830d196 100644
--- a/webui/static/video/video-side.css
+++ b/webui/static/video/video-side.css
@@ -2354,6 +2354,16 @@ body[data-side="video"] #soulsync-toggle { display: none; }
 .vdsc-toggle input { accent-color: rgb(var(--accent-rgb, 88 101 242)); width: 16px; height: 16px; cursor: pointer; }
 .vdsc-hide-owned .vsr-card--owned { display: none; }
 
+/* rail-language preference chips — which original languages show in the general rails */
+.vdsc-langs { display: inline-flex; align-items: center; gap: 4px; flex-wrap: wrap; margin-left: 14px; }
+.vdsc-langs-label { font-size: 13px; opacity: 0.6; }
+.vdsc-lang { font-size: 11px; font-weight: 700; letter-spacing: 0.3px; padding: 3px 8px; border-radius: 999px;
+    border: 1px solid rgba(255, 255, 255, 0.12); background: rgba(255, 255, 255, 0.04);
+    color: rgba(255, 255, 255, 0.5); cursor: pointer;
+    transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease; }
+.vdsc-lang:hover { color: rgba(255, 255, 255, 0.85); }
+.vdsc-lang--on { color: #fff; background: rgba(var(--accent-rgb, 88 101 242), 0.85); border-color: transparent; }
+
 /* rails: a gentle fade-in when filled + per-title hue on hover */
 .vdsc-shelf--in .vdsc-rail { animation: vdscFade 0.45s ease both; }
 @keyframes vdscFade { from { opacity: 0.35; } to { opacity: 1; } }