only migrate for images

mobile/lib/domain/services/asset.service.dart

@@ -98,7 +98,12 @@ class AssetService {
       height = fetched?.height?.toDouble();
     }
 
-    return (width: width, height: height, isFlipped: false);
+    // Check exif for orientation to determine if dimensions should be flipped
+    // This is important for videos where raw file dimensions may not match display dimensions
+    final exif = await _remoteAssetRepository.getExif(asset.id);
+    final isFlipped = exif?.isFlipped ?? false;
+
+    return (width: width, height: height, isFlipped: isFlipped);
   }
 
   Future<List<(String, String)>> getPlaces(String userId) {

mobile/lib/utils/migration.dart

@@ -284,12 +284,16 @@ Future<void> _syncLocalAlbumIsIosSharedAlbum(Drift db) async {
 
 Future<void> _backfillAssetExifWidthHeight(Drift db) async {
   try {
+    // Only backfill images (type = 1), not videos
+    // Videos have different dimension handling based on orientation/exif
     await db.customStatement('''
       UPDATE remote_exif_entity AS remote_exif
       SET width = asset.width,
           height = asset.height
       FROM remote_asset_entity AS asset
-      WHERE remote_exif.asset_id = asset.id;
+      WHERE remote_exif.asset_id = asset.id
+        AND asset.type = 1
+        AND (remote_exif.width IS NULL OR remote_exif.width = 0 OR remote_exif.height IS NULL OR remote_exif.height = 0);
     ''');
 
     dPrint(() => "[MIGRATION] Successfully backfilled asset exif width and height");

mobile/test/test_utils.dart

@@ -118,7 +118,13 @@ abstract final class TestUtils {
     return result;
   }
 
-  static domain.RemoteAsset createRemoteAsset({required String id, int? width, int? height, String? ownerId}) {
+  static domain.RemoteAsset createRemoteAsset({
+    required String id,
+    int? width,
+    int? height,
+    String? ownerId,
+    String? localId,
+  }) {
     return domain.RemoteAsset(
       id: id,
       checksum: 'checksum1',
@@ -132,6 +138,7 @@ abstract final class TestUtils {
       width: width,
       height: height,
       isEdited: false,
+      localId: localId,
     );
   }