diff --git a/api.php b/api.php
index ea2ff5e..da18ea0 100644
--- a/api.php
+++ b/api.php
@@ -480,40 +480,64 @@ case 'import_batch':
     $pdo->beginTransaction();
     $imported = 0; $skipped = 0;
     try {
-        if ($type === 'videotheque') {
-            $stmt = $pdo->prepare("INSERT INTO videotheque (id, title, year, format, poster, ean_isbn13, description, length, number_of_discs, aspect_ratio, actors, publisher, director) 
-                VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?) ON DUPLICATE KEY UPDATE 
-                title=VALUES(title), year=VALUES(year), format=VALUES(format), poster=VALUES(poster), ean_isbn13=VALUES(ean_isbn13), description=VALUES(description), length=VALUES(length), number_of_discs=VALUES(number_of_discs), aspect_ratio=VALUES(aspect_ratio), actors=VALUES(actors), publisher=VALUES(publisher), director=VALUES(director)");
+            if ($type === 'videotheque') {
+        // L'UPDATE est optimisé pour ne pas écraser les bonnes données avec des valeurs vides ou l'affiche par défaut
+        $stmt = $pdo->prepare("INSERT INTO videotheque (id, title, year, format, poster, ean_isbn13, description, length, number_of_discs, aspect_ratio, actors, publisher, director) 
+            VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?) ON DUPLICATE KEY UPDATE 
+            title=VALUES(title), year=VALUES(year), format=VALUES(format), 
+            poster=IF(VALUES(poster)!='assets/img/default_physical_media.jpg', VALUES(poster), poster), 
+            ean_isbn13=IF(VALUES(ean_isbn13)!='', VALUES(ean_isbn13), ean_isbn13), 
+            description=IF(VALUES(description)!='', VALUES(description), description), 
+            length=IF(VALUES(length)!='', VALUES(length), length), 
+            number_of_discs=IF(VALUES(number_of_discs)!=1, VALUES(number_of_discs), number_of_discs), 
+            aspect_ratio=IF(VALUES(aspect_ratio)!='', VALUES(aspect_ratio), aspect_ratio), 
+            actors=IF(VALUES(actors)!='', VALUES(actors), actors), 
+            publisher=IF(VALUES(publisher)!='', VALUES(publisher), publisher), 
+            director=IF(VALUES(director)!='', VALUES(director), director)");
+        
+        foreach ($items as $item) {
+            $ean = preg_replace('/[^0-9]/', '', (string)($item['ean'] ?? ''));
             
-            foreach ($items as $item) {
-                $ean = preg_replace('/[^0-9]/', '', (string)($item['ean'] ?? ''));
-                if (strlen($ean) < 8) { $skipped++; continue; }
-                
-                // 1. Données physiques via UPC (UPCitemdb → UPCMDB)
+            // 1. Données de base (CSV ou fallback UPC si le titre est absent)
+            $title = trim($item['title'] ?? '');
+            $publisher = trim($item['publisher'] ?? '');
+            $length = trim($item['length'] ?? '');
+            $discs = (int)($item['number_of_discs'] ?? 1) ?: 1;
+            $aspect = trim($item['aspect_ratio'] ?? '');
+            $desc = trim($item['description'] ?? '');
+            $actors = trim($item['actors'] ?? '');
+            $year = '';
+            
+            // Fallback API UPC uniquement si le titre manque dans le CSV
+            if (empty($title) && strlen($ean) >= 8) {
                 $phys = fetchPhysicalByEan($ean, $pdo);
                 $title = $phys['title'] ?? '';
-                if (empty($title)) { $skipped++; continue; }
-                
+                if (empty($publisher)) $publisher = $phys['publisher'] ?? '';
+                if (empty($length)) $length = $phys['length'] ?? '';
+                if ($discs == 1) $discs = $phys['number_of_discs'] ?? 1;
+                if (empty($aspect)) $aspect = $phys['aspect_ratio'] ?? '';
                 $year = $phys['year'] ?? '';
-                $format = $phys['format'] ?: detectFormat($title);
-                $publisher = $phys['publisher'] ?? '';
-                $discs = $phys['number_of_discs'] ?? 1;
-                $aspect = $phys['aspect_ratio'] ?? '';
-                $length = $phys['length'] ?? '';
-                
-                // 2. Données cinéma via TMDB (Affiche, Réalisateur, Acteurs, Synopsis, Durée)
-                $tmdb = fetchTmdbPosterAndSynopsis($title, $year, $pdo);
-                $poster = $tmdb['poster'];
-                $director = $tmdb['director'] ?? '';
-                $actors = $tmdb['actors'] ?? '';
-                $desc = $tmdb['description'] ?? '';
-                if (!empty($tmdb['length'])) $length = $tmdb['length'];
-                if (empty($year) && !empty($tmdb['year'])) $year = $tmdb['year'];
-                
-                $id = makeStableId('videotheque', $title, $year);
-                $stmt->execute([$id, $title, $year, $format, $poster, $ean, $desc, $length, $discs, $aspect, $actors, $publisher, $director]);
-                $imported++;
             }
+            
+            if (empty($title)) { $skipped++; continue; }
+            
+            $format = detectFormat($title);
+            
+            // 2. Données cinéma via TMDB (Affiche, Réalisateur, Acteurs, Synopsis, Année)
+            $tmdb = fetchTmdbPosterAndSynopsis($title, $year, $pdo);
+            $poster = $tmdb['poster'];
+            $director = $tmdb['director'] ?? '';
+            
+            // On complète avec TMDB si les données du CSV sont vides
+            if (empty($desc)) $desc = $tmdb['description'] ?? '';
+            if (empty($actors)) $actors = $tmdb['actors'] ?? '';
+            if (empty($length) && !empty($tmdb['length'])) $length = $tmdb['length'];
+            if (empty($year) && !empty($tmdb['year'])) $year = $tmdb['year'];
+            
+            $id = makeStableId('videotheque', $title, $year);
+            $stmt->execute([$id, $title, $year, $format, $poster, $ean, $desc, $length, $discs, $aspect, $actors, $publisher, $director]);
+            $imported++;
+        }
     } else { // ── IMPORTATION CRITIQUES ──
                 $stmtCritiques = $pdo->prepare("INSERT INTO critiques (id, title, year, director, poster, rating, review, streaming) 
                                                 VALUES (?, ?, ?, ?, ?, ?, ?, ?)