diff --git a/backend/package.json b/backend/package.json
index 451888a..b813b6f 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -9,7 +9,8 @@
     "typeorm": "ts-node -e \"require('typeorm/cli')\"",
     "migration:generate": "npm run typeorm -- migration:generate",
     "migration:run": "npm run typeorm -- migration:run",
-    "migration:revert": "npm run typeorm -- migration:revert"
+    "migration:revert": "npm run typeorm -- migration:revert",
+    "seed:videos": "ts-node --transpile-only src/seeds/videos.ts"
   },
   "dependencies": {
     "bcrypt": "^5.1.1",
diff --git a/backend/src/seeds/videos.ts b/backend/src/seeds/videos.ts
new file mode 100644
index 0000000..46d8541
--- /dev/null
+++ b/backend/src/seeds/videos.ts
@@ -0,0 +1,166 @@
+/**
+ * Seed vidéos YouTube — OriginsDigital
+ * Usage : npm run seed:videos
+ *
+ * Requiert DB_HOST, DB_USER, DB_PASSWORD, DB_NAME dans l'env.
+ */
+
+import "reflect-metadata";
+import * as dotenv from "dotenv";
+dotenv.config();
+
+import { AppDataSource } from "../config/data-source";
+import { Video } from "../entities/Video";
+
+const yt = (id: string) => `https://img.youtube.com/vi/${id}/maxresdefault.jpg`;
+
+const VIDEOS: Partial<Video>[] = [
+  // ── Niveau 0 — libre ──────────────────────────────────────────────────────
+  {
+    title: "JavaScript in 100 Seconds",
+    description: "Tour rapide du JavaScript — syntaxe, event loop, histoire.",
+    storageType: "youtube",
+    storageKey: "DHjqpvDnNGE",
+    thumbnailUrl: yt("DHjqpvDnNGE"),
+    duration: 100,
+    requiredLevel: 0,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "TypeScript in 100 Seconds",
+    description: "Pourquoi typer son JavaScript — les bases en 100 secondes.",
+    storageType: "youtube",
+    storageKey: "zQnBQ4tB3ZA",
+    thumbnailUrl: yt("zQnBQ4tB3ZA"),
+    duration: 100,
+    requiredLevel: 0,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "React in 100 Seconds",
+    description: "Components, JSX, hooks — React expliqué en 100 secondes.",
+    storageType: "youtube",
+    storageKey: "Tn6-PIqc4UM",
+    thumbnailUrl: yt("Tn6-PIqc4UM"),
+    duration: 100,
+    requiredLevel: 0,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "CSS in 100 Seconds",
+    description: "Cascading Style Sheets — sélecteurs, box model, flexbox.",
+    storageType: "youtube",
+    storageKey: "OEV8gMkCHXQ",
+    thumbnailUrl: yt("OEV8gMkCHXQ"),
+    duration: 100,
+    requiredLevel: 0,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "Git in 100 Seconds",
+    description: "Versionner son code — commits, branches, merges.",
+    storageType: "youtube",
+    storageKey: "hwP7WQkmECE",
+    thumbnailUrl: yt("hwP7WQkmECE"),
+    duration: 100,
+    requiredLevel: 0,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "Node.js in 100 Seconds",
+    description: "JavaScript côté serveur — event loop, npm, streams.",
+    storageType: "youtube",
+    storageKey: "ENrzD9HAZK4",
+    thumbnailUrl: yt("ENrzD9HAZK4"),
+    duration: 100,
+    requiredLevel: 0,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  // ── Niveau 1 — basic ──────────────────────────────────────────────────────
+  {
+    title: "Docker in 100 Seconds",
+    description: "Conteneuriser ses applications — images, volumes, compose.",
+    storageType: "youtube",
+    storageKey: "gAkwW2tuIqE",
+    thumbnailUrl: yt("gAkwW2tuIqE"),
+    duration: 100,
+    requiredLevel: 1,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "Tailwind CSS in 100 Seconds",
+    description: "Utility-first CSS — pourquoi ça change tout.",
+    storageType: "youtube",
+    storageKey: "mr15Xzb1Ook",
+    thumbnailUrl: yt("mr15Xzb1Ook"),
+    duration: 100,
+    requiredLevel: 1,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "SQL Explained in 100 Seconds",
+    description: "Bases de données relationnelles — SELECT, JOIN, index.",
+    storageType: "youtube",
+    storageKey: "zsjvFFKnte0",
+    thumbnailUrl: yt("zsjvFFKnte0"),
+    duration: 100,
+    requiredLevel: 1,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  // ── Niveau 2 — pro ────────────────────────────────────────────────────────
+  {
+    title: "Linux in 100 Seconds",
+    description: "Le système d'exploitation qui fait tourner Internet.",
+    storageType: "youtube",
+    storageKey: "rrB13utjYV4",
+    thumbnailUrl: yt("rrB13utjYV4"),
+    duration: 100,
+    requiredLevel: 2,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+  {
+    title: "Redis in 100 Seconds",
+    description: "Cache in-memory — sessions, queues, pub/sub.",
+    storageType: "youtube",
+    storageKey: "G1rOthIU-uo",
+    thumbnailUrl: yt("G1rOthIU-uo"),
+    duration: 100,
+    requiredLevel: 2,
+    isPublished: true,
+    publishedAt: new Date(),
+  },
+];
+
+async function seed() {
+  await AppDataSource.initialize();
+  const repo = AppDataSource.getRepository(Video);
+
+  let inserted = 0;
+  let skipped  = 0;
+
+  for (const data of VIDEOS) {
+    const exists = await repo.findOne({
+      where: { storageType: data.storageType, storageKey: data.storageKey },
+    });
+
+    if (exists) { skipped++; continue; }
+
+    await repo.save(repo.create(data));
+    inserted++;
+  }
+
+  await AppDataSource.destroy();
+  console.log(`✅ Seed terminé — ${inserted} insérées, ${skipped} ignorées (déjà présentes).`);
+}
+
+seed().catch((e) => { console.error("❌ Seed échoué :", e.message); process.exit(1); });
diff --git a/frontend/src/pages/VideoPage.tsx b/frontend/src/pages/VideoPage.tsx
index a6b3066..7b08044 100644
--- a/frontend/src/pages/VideoPage.tsx
+++ b/frontend/src/pages/VideoPage.tsx
@@ -1,8 +1,10 @@
-import { useState, useEffect } from 'react';
+import { useState, useEffect, lazy, Suspense } from 'react';
 import { useParams, Link } from 'react-router-dom';
-import ReactPlayer from 'react-player';
 import { apiFetch } from '../lib/api';
 
+// Lazy — HLS/DASH chunks ne chargent que sur /video/:id, pas sur la homepage
+const ReactPlayer = lazy(() => import('react-player'));
+
 interface Video {
   id: number;
   title: string;
@@ -89,12 +91,14 @@ export default function VideoPage() {
       {/* Player */}
       <div className="overflow-hidden rounded border border-od-border bg-od-surface">
         <div className="aspect-video w-full">
-          <ReactPlayer
-            src={playerUrl}
-            width="100%"
-            height="100%"
-            controls
-          />
+          <Suspense fallback={<div className="h-full w-full bg-od-surface-hi animate-pulse" />}>
+            <ReactPlayer
+              src={playerUrl}
+              width="100%"
+              height="100%"
+              controls
+            />
+          </Suspense>
         </div>
       </div>