diff --git a/index.css b/index.css
index c71d584..3cb751b 100644
--- a/index.css
+++ b/index.css
@@ -517,6 +517,16 @@ body {
   }
 }
 
+/* Embed PAYSAGE dans le cadre vertical : la boîte de l'iframe suit le16:9
+   (sinon le lecteur étire ou réduit la vidéo dans un cadre 9:16). */
+.shorts-frame iframe.embed-wide {
+  top: 50%;
+  bottom: auto;
+  height: auto;
+  aspect-ratio: 16 / 9;
+  transform: translateY(-50%);
+}
+
 /* --- Shorts immersive stage (façon YouTube) -------------------------------- */
 /* Plein écran vertical : le cadre 9:16 flotte sur un fond d'ambiance tiré de
    la vignette courante. `100dvh` (barres navigateur mobiles) avec repli. */
diff --git a/src/app/search/shorts-catalog.spec.ts b/src/app/search/shorts-catalog.spec.ts
index c7752d0..cc0db62 100644
--- a/src/app/search/shorts-catalog.spec.ts
+++ b/src/app/search/shorts-catalog.spec.ts
@@ -1,5 +1,6 @@
 import {
   catalogShortToVideo,
+  isWideEmbed,
   formatShortMeta,
   formatCapturedAgo,
   formatCompactFr,
@@ -32,6 +33,13 @@ function assertEqual(actual: unknown, expected: unknown, message: string): void
 
 const NOW = 1700000000000;
 
+console.log('--- isWideEmbed ---');
+assertEqual(isWideEmbed({ width: 1920, height: 1080 }, 'rumble'), true, '16:9 connu → paysage');
+assertEqual(isWideEmbed({ width: 720, height: 1280 }, 'youtube'), false, 'vertical connu → pas paysage');
+assertEqual(isWideEmbed({}, 'rumble'), true, 'Rumble sans dimensions → paysage (repli plateforme)');
+assertEqual(isWideEmbed({}, 'youtube'), false, 'dimensions inconnues hors Rumble → on ne tranche pas');
+assertEqual(isWideEmbed(null, 'rumble'), true, 'item nul → repli plateforme');
+
 console.log('--- catalogShortToVideo ---');
 assertEqual(catalogShortToVideo(null), null, 'null → null');
 assertEqual(catalogShortToVideo({} as any), null, 'sans id → null (pas de fantôme)');
diff --git a/src/app/search/shorts-catalog.ts b/src/app/search/shorts-catalog.ts
index 7e979a7..1c590a7 100644
--- a/src/app/search/shorts-catalog.ts
+++ b/src/app/search/shorts-catalog.ts
@@ -91,6 +91,24 @@ export function catalogShortToVideo(item: VideoItem | null | undefined): Video |
   };
 }
 
+/**
+ * La vidéo est-elle PAYSAGE dans le cadre vertical (9:16) de /shorts ?
+ *
+ * Rumble n'expose ni largeur ni hauteur et sa plateforme est16:9 : sans cela
+ * son embed est écrasé dans un cadre portrait (étiré ou réduit à un tiers de
+ * l'écran). Dimensions connues => orientation réelle ; inconnues => repli sur
+ * la nature de la plateforme (rumble = paysage, les autres = on ne tranche pas).
+ */
+export function isWideEmbed(
+  v: { width?: number | null; height?: number | null } | null | undefined,
+  provider: string,
+): boolean {
+  const w = Number(v?.width) || 0;
+  const h = Number(v?.height) || 0;
+  if (w > 0 && h > 0) return w > h;
+  return provider === 'rumble';
+}
+
 /** Nombre compact fr (« 12 k », « 3,4 M ») — `Intl` plutôt qu'un format maison. */
 export function formatCompactFr(n: number): string {
   if (!Number.isFinite(n) || n < 0) return '';
diff --git a/src/components/shorts/watch-short.component.html b/src/components/shorts/watch-short.component.html
index 5d1c163..2c6bc5a 100644
--- a/src/components/shorts/watch-short.component.html
+++ b/src/components/shorts/watch-short.component.html
@@ -18,19 +18,12 @@
   <!-- Scène immersive : flèches (bureau) + cadre 9:16 -->
   <div class="relative z-10 flex w-full min-h-0 flex-1 items-center justify-center gap-1 px-0 py-3 sm:gap-3 sm:px-4"
         (wheel)="onWheel($event)" (touchstart)="onTouchStart($event)" (touchend)="onTouchEnd($event)">
-    <!-- Flèche précédent (bureau, façon YouTube) -->
-    <button type="button" (click)="prev(); $event.stopPropagation()" [disabled]="!canPrev()"
-            class="shorts-chrome chip hidden sm:flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-black/40 text-white ring-1 ring-white/15 hover:bg-black/60 disabled:opacity-30"
-            aria-label="Short précédent">
-      <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M7 14l5-5 5 5H7z"/></svg>
-    </button>
-
     <!-- Colonne centrale : cadre 9:16 (sizing dans index.css : .shorts-frame) -->
     <div class="relative flex min-w-0 items-center justify-center" style="max-width: 560px;">
       <!-- Video frame (9:16) -->
       <div #shortsFrame class="shorts-frame relative shrink-0 overflow-hidden bg-black rounded-none ring-0 shadow-none sm:rounded-2xl sm:ring-1 sm:ring-white/10 sm:shadow-2xl">
         @if (embedUrl(); as url) {
-          <iframe [src]="url" [title]="current()?.title || 'Short video'" class="absolute inset-0 w-full h-full" frameborder="0" playsinline
+          <iframe [src]="url" [title]="current()?.title || 'Short video'" class="absolute inset-0 w-full h-full" [class.embed-wide]="wideEmbed()" frameborder="0" playsinline
                   allow="accelerometer; autoplay; clipboard-write; encrypted-media; fullscreen; gyroscope; picture-in-picture; web-share"
                   allowfullscreen referrerpolicy="origin"></iframe>
         } @else if (embedWaiting()) {
@@ -52,6 +45,13 @@
             <span>{{ error() }}</span>
             <button (click)="retry(); $event.stopPropagation()" class="chip px-4 py-3 rounded bg-white/10 hover:bg-white/20 text-white text-sm min-h-[44px]">Réessayer</button>
           </div>
+        } @else {
+          <!-- Fournisseur vide (catalogue maigre + repli historique sans rien)
+               : surtout ne pas laisser un cadre noir muet. -->
+          <div class="absolute inset-0 flex flex-col gap-3 items-center justify-center bg-black text-slate-400 text-sm p-6 text-center">
+            <span>Aucun short à afficher pour ce fournisseur.</span>
+            <button (click)="retry(); $event.stopPropagation()" class="chip px-4 py-3 rounded bg-white/10 hover:bg-white/20 text-white text-sm min-h-[44px]">Réessayer</button>
+          </div>
         }
 
         @if (current(); as v) {
@@ -204,6 +204,19 @@
               </div>
             }
           </div>
+
+          <!-- Navigation précédent / suivant : SUR la vidéo (hors auto-hide du
+               chrome, hors geste tactile — stopPropagation dans les handlers). -->
+          <button type="button" (click)="prev(); $event.stopPropagation()" [disabled]="!canPrev()"
+                  class="absolute left-1.5 top-1/2 z-20 flex h-10 w-10 -translate-y-1/2 items-center justify-center rounded-full bg-black/45 text-white ring-1 ring-white/15 backdrop-blur-md transition hover:bg-black/70 disabled:opacity-30"
+                  aria-label="Short précédent">
+            <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M15.5 4.5 8 12l7.5 7.5z"/></svg>
+          </button>
+          <button type="button" (click)="next(); $event.stopPropagation()" [disabled]="!canNext()"
+                  class="absolute right-1.5 top-1/2 z-20 flex h-10 w-10 -translate-y-1/2 items-center justify-center rounded-full bg-black/45 text-white ring-1 ring-white/15 backdrop-blur-md transition hover:bg-black/70 disabled:opacity-30"
+                  aria-label="Short suivant">
+            <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M8.5 4.5 16 12l-7.5 7.5z"/></svg>
+          </button>
         }
 
         @if (shareCopied()) {
@@ -212,12 +225,6 @@
       </div>
     </div>
 
-    <!-- Flèche suivant (bureau, façon YouTube) -->
-    <button type="button" (click)="next(); $event.stopPropagation()" [disabled]="!canNext()"
-            class="shorts-chrome chip hidden sm:flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-black/40 text-white ring-1 ring-white/15 hover:bg-black/60 disabled:opacity-30"
-            aria-label="Short suivant">
-      <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M7 10l5 5 5-5H7z"/></svg>
-    </button>
   </div>
 
   @if (busyMore()) {
diff --git a/src/components/shorts/watch-short.component.ts b/src/components/shorts/watch-short.component.ts
index 6cc0c75..a885d1d 100644
--- a/src/components/shorts/watch-short.component.ts
+++ b/src/components/shorts/watch-short.component.ts
@@ -21,6 +21,7 @@ import { SearchService } from '../../app/search/search.service';
 import { ChannelProviderFactory } from '../../app/core/providers/channel/channel-provider.factory';
 import {
   catalogShortToVideo,
+  isWideEmbed,
   formatShortMeta,
   formatCapturedAgo,
   normalizeShortsLangMode,
@@ -505,6 +506,12 @@ export class WatchShortComponent implements OnDestroy {
     return null;
   });
 
+  /** Encadré 16:9 de l'embed (voir `isWideEmbed`). */
+  readonly wideEmbed = computed(() => {
+    const v = this.current();
+    return v ? isWideEmbed(v, this.providerOf(v)) : false;
+  });
+
   /** Host PeerTube déduit de l'URL vidéo (fédération), sinon null. */
   private peerTubeHostOf(v: Video): string | null {
     try {