diff --git a/schema.js b/schema.js
index 39e6510..1c42c5d 100644
--- a/schema.js
+++ b/schema.js
@@ -42,7 +42,7 @@ var video3 = db.videos.insertOne({
   "publishDate": "2010-07-16",
   "category": category1,
   "views": 150,
-  "favoritedBy": [user1, user2]
+  "favoritedBy": null
 }).insertedId;
 
 var video4 = db.videos.insertOne({
@@ -58,5 +58,5 @@ var video4 = db.videos.insertOne({
 
 
 // Update the users documents with the _id fields of the videos documents
-db.users.updateOne({ "_id": user1 }, { "$set": { "favorites": [video1] } });
-db.users.updateOne({ "_id": user2 }, { "$set": { "favorites": [video2] } });
\ No newline at end of file
+db.users.updateOne({ "_id": user1 }, { "$set": { "favorites": [video1, video4] } });
+db.users.updateOne({ "_id": user2 }, { "$set": { "favorites": [video2, video4] } });
\ No newline at end of file
diff --git a/src/main/java/com/postech30/movies/controller/VideoController.java b/src/main/java/com/postech30/movies/controller/VideoController.java
index 66b9d4d..8f222e5 100644
--- a/src/main/java/com/postech30/movies/controller/VideoController.java
+++ b/src/main/java/com/postech30/movies/controller/VideoController.java
@@ -73,7 +73,7 @@ public Flux<VideoDTO> getVideoByPublishDate(@PathVariable("publishDate") LocalDa
             @ApiResponse(responseCode = "422", description = "Parâmetro não pode ser nulo")})
     @GetMapping(value = "category/{category}")
     public Flux<VideoDTO> getVideoByCategory(@PathVariable("category") String category) {
-        return videoService.getVideoByCategory(category);
+        return videoService.getVideosByCategory(category);
     }
 
     @Operation(summary = "Salva um vídeo", description = "Salva um vídeo na base de dados do sistema.")
diff --git a/src/main/java/com/postech30/movies/dto/VideoDTO.java b/src/main/java/com/postech30/movies/dto/VideoDTO.java
index 08f8443..599358f 100644
--- a/src/main/java/com/postech30/movies/dto/VideoDTO.java
+++ b/src/main/java/com/postech30/movies/dto/VideoDTO.java
@@ -45,10 +45,4 @@ public class VideoDTO {
     @JsonProperty
     private String category;
 
-    @JsonProperty
-    private String categoryName;
-
-    @JsonProperty
-    private String categoryDescription;
-
 }
diff --git a/src/main/java/com/postech30/movies/entity/Video.java b/src/main/java/com/postech30/movies/entity/Video.java
index f0eae45..24e2440 100644
--- a/src/main/java/com/postech30/movies/entity/Video.java
+++ b/src/main/java/com/postech30/movies/entity/Video.java
@@ -25,8 +25,6 @@ public class Video {
     private String url;
     private LocalDate publishDate;
     private Integer views;
-    private String category;
     private List<ObjectId> favoritedBy;
-    private String categoryName;
-    private String categoryDescription;
+    private ObjectId category;
 }
diff --git a/src/main/java/com/postech30/movies/mapper/VideoMapper.java b/src/main/java/com/postech30/movies/mapper/VideoMapper.java
index 2313927..b914b04 100644
--- a/src/main/java/com/postech30/movies/mapper/VideoMapper.java
+++ b/src/main/java/com/postech30/movies/mapper/VideoMapper.java
@@ -21,8 +21,7 @@ public static VideoDTO mapToVideoDTO(Video video) {
                         video.getFavoritedBy().stream()
                                 .map(ObjectId::toHexString)
                                 .collect(Collectors.toList()) : null)
-                .categoryName(video.getCategoryName())
-                .categoryDescription(video.getCategoryDescription())
+                .category(video.getCategory() != null ? video.getCategory().toHexString() : null)
                 .build();
     }
 
@@ -34,13 +33,11 @@ public static Video mapToVideo(VideoDTO videoDTO) {
                 videoDTO.getUrl(),
                 videoDTO.getPublishDate(),
                 videoDTO.getViews(),
-                videoDTO.getCategory(),
                 videoDTO.getFavoritedBy() != null ?
                         videoDTO.getFavoritedBy().stream()
                                 .map(ObjectId::new)
                                 .collect(Collectors.toList()) : null,
-                videoDTO.getCategoryName(),
-                videoDTO.getCategoryDescription()
+                videoDTO.getCategory() != null ? new ObjectId(videoDTO.getCategory()) : null
         );
     }
 }
diff --git a/src/main/java/com/postech30/movies/repository/VideoRepository.java b/src/main/java/com/postech30/movies/repository/VideoRepository.java
index 82e82e8..11d9bf5 100644
--- a/src/main/java/com/postech30/movies/repository/VideoRepository.java
+++ b/src/main/java/com/postech30/movies/repository/VideoRepository.java
@@ -20,7 +20,7 @@ public interface VideoRepository extends ReactiveMongoRepository<Video, String>
     Flux<Video> findByPublishDate(LocalDate publishDate);
 
 
-    Flux<Video> findByCategoryName(String categoryName);
+    Flux<Video> findByCategory(ObjectId category);
 
 
     @Aggregation("{ $count: 'totalVideos' }")
diff --git a/src/main/java/com/postech30/movies/service/Impl/UserServiceImpl.java b/src/main/java/com/postech30/movies/service/Impl/UserServiceImpl.java
index 8b794d8..651bf9b 100644
--- a/src/main/java/com/postech30/movies/service/Impl/UserServiceImpl.java
+++ b/src/main/java/com/postech30/movies/service/Impl/UserServiceImpl.java
@@ -67,6 +67,6 @@ public Flux<Video> getRecommendedVideos(String userId) {
         return userRepository.findById(userId)
                 .flatMapMany(user -> Flux.fromIterable(user.getFavorites())
                         .flatMap(videoId -> videoRepository.findById(videoId.toString()))
-                        .flatMap(video ->  videoRepository.findVideosByCategory(new ObjectId(video.getCategory()))));
+                        .flatMap(video ->  videoRepository.findVideosByCategory(video.getCategory())));
     }
 }
diff --git a/src/main/java/com/postech30/movies/service/Impl/VideoServiceImpl.java b/src/main/java/com/postech30/movies/service/Impl/VideoServiceImpl.java
index bf2a644..90d14a0 100644
--- a/src/main/java/com/postech30/movies/service/Impl/VideoServiceImpl.java
+++ b/src/main/java/com/postech30/movies/service/Impl/VideoServiceImpl.java
@@ -44,21 +44,11 @@ public class VideoServiceImpl implements VideoService {
     public Flux<VideoDTO> getAllVideos(Pageable pageable) {
         List<AggregationOperation> operations = new ArrayList<>();
 
-        operations.add(Aggregation.lookup("categories", "category", "_id", "categoryInfo"));
-        operations.add(Aggregation.unwind("categoryInfo"));
-        operations.add(Aggregation.project()
-                .andInclude("_id", "title", "description", "url", "publishDate", "views", "favoritedBy")
-                .and("categoryInfo.name").as("categoryName")
-                .and("categoryInfo.description").as("categoryDescription"));
-
         // Add sorting operations from pageable
         for (Sort.Order order : pageable.getSort()) {
             operations.add(new SortOperation(Sort.by(order.getDirection(), order.getProperty())));
         }
 
-        // Add default sorting operation by publishDate in descending order
-        operations.add(Aggregation.sort(Sort.Direction.DESC, "publishDate"));
-
         // Add paging operations
         operations.add(Aggregation.skip((long) pageable.getPageNumber() * pageable.getPageSize()));
         operations.add(Aggregation.limit(pageable.getPageSize()));
@@ -69,7 +59,7 @@ public Flux<VideoDTO> getAllVideos(Pageable pageable) {
                 Video.class
         );
 
-        return videoFlux.map(VideoMapper::mapToVideoDTO).switchIfEmpty(Flux.empty());
+        return videoFlux.map(VideoMapper::mapToVideoDTO);
     }
 
     @Override
@@ -91,20 +81,8 @@ public Flux<VideoDTO> getVideoByPublishDate(LocalDate publishDate) {
     }
 
     @Override
-    public Flux<VideoDTO> getVideoByCategory(String categoryName) {
-        MatchOperation matchStage = Aggregation.match(new Criteria("categoryInfo.name").is(categoryName));
-
-        Aggregation aggregation = Aggregation.newAggregation(
-                Aggregation.lookup("categories", "category", "_id", "categoryInfo"),
-                Aggregation.unwind("categoryInfo"),
-                matchStage,
-                Aggregation.project()
-                        .andInclude("_id", "title", "description", "url", "publishDate", "views", "favoritedBy")
-                        .and("categoryInfo.name").as("categoryName")
-                        .and("categoryInfo.description").as("categoryDescription")
-        );
-
-        Flux<Video> videoMono = reactiveMongoTemplate.aggregate(aggregation, "videos", Video.class);
+    public Flux<VideoDTO> getVideosByCategory(String category) {
+        Flux<Video> videoMono = videoRepository.findByCategory(new ObjectId(category));
         return videoMono.map(VideoMapper::mapToVideoDTO);
     }
 
diff --git a/src/main/java/com/postech30/movies/service/VideoService.java b/src/main/java/com/postech30/movies/service/VideoService.java
index 2e9b0f8..ec7c75e 100644
--- a/src/main/java/com/postech30/movies/service/VideoService.java
+++ b/src/main/java/com/postech30/movies/service/VideoService.java
@@ -18,7 +18,7 @@ public interface VideoService {
 
     Flux<VideoDTO> getVideoByPublishDate(LocalDate publishDate);
 
-    Flux<VideoDTO> getVideoByCategory(String categoryName);
+    Flux<VideoDTO> getVideosByCategory(String categoryName);
 
     Mono<VideoDTO> saveVideo(VideoDTO videoDTO);
 
diff --git a/src/main/resources/postman/Category.postman_collection.json b/src/main/resources/postman/Category.postman_collection.json
index 23b0620..8342434 100644
--- a/src/main/resources/postman/Category.postman_collection.json
+++ b/src/main/resources/postman/Category.postman_collection.json
@@ -31,7 +31,7 @@
 				"method": "GET",
 				"header": [],
 				"url": {
-					"raw": "localhost:8080/api/categories/6589d94b866c274a83a3eefa",
+					"raw": "localhost:8080/api/categories/65b56b440c75f588c2abf86a",
 					"host": [
 						"localhost"
 					],
@@ -39,7 +39,7 @@
 					"path": [
 						"api",
 						"categories",
-						"6589d94b866c274a83a3eefa"
+						"65b56b440c75f588c2abf86a"
 					]
 				}
 			},
@@ -60,7 +60,7 @@
 					}
 				},
 				"url": {
-					"raw": "localhost:8080/api/categories/6589fcc94ac9e968138a83fa",
+					"raw": "localhost:8080/api/categories/65b56b440c75f588c2abf86a",
 					"host": [
 						"localhost"
 					],
@@ -68,7 +68,7 @@
 					"path": [
 						"api",
 						"categories",
-						"6589fcc94ac9e968138a83fa"
+						"65b56b440c75f588c2abf86a"
 					]
 				}
 			},
@@ -81,7 +81,7 @@
 				"header": [],
 				"body": {
 					"mode": "raw",
-					"raw": "{\r\n    \"name\": \"Action 2\",\r\n    \"description\": \"Action movies involve instances of physical action such as fights, stunts, car chases, etc.\"\r\n}",
+					"raw": "{\r\n    \"name\": \"Romance\",\r\n    \"description\": \"Romance movies are centered around the theme of love and relationships.\"\r\n}",
 					"options": {
 						"raw": {
 							"language": "json"
@@ -103,12 +103,12 @@
 			"response": []
 		},
 		{
-			"name": "New Request",
+			"name": "Delete A Category",
 			"request": {
 				"method": "DELETE",
 				"header": [],
 				"url": {
-					"raw": "localhost:8080/api/categories/6589fcc94ac9e968138a83fa",
+					"raw": "localhost:8080/api/categories/65b6d7ca05c12f06ccc41b69",
 					"host": [
 						"localhost"
 					],
@@ -116,7 +116,7 @@
 					"path": [
 						"api",
 						"categories",
-						"6589fcc94ac9e968138a83fa"
+						"65b6d7ca05c12f06ccc41b69"
 					]
 				}
 			},
diff --git a/src/main/resources/postman/Stream.postman_collection.json b/src/main/resources/postman/Stream.postman_collection.json
new file mode 100644
index 0000000..32cba39
--- /dev/null
+++ b/src/main/resources/postman/Stream.postman_collection.json
@@ -0,0 +1,30 @@
+{
+	"info": {
+		"_postman_id": "b85db07e-0c7d-4287-a9e6-7b29a0226d85",
+		"name": "Stream",
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
+		"_exporter_id": "17475893"
+	},
+	"item": [
+		{
+			"name": "Stream a Video",
+			"request": {
+				"method": "GET",
+				"header": [],
+				"url": {
+					"raw": "http://localhost:8080/stream/1",
+					"protocol": "http",
+					"host": [
+						"localhost"
+					],
+					"port": "8080",
+					"path": [
+						"stream",
+						"1"
+					]
+				}
+			},
+			"response": []
+		}
+	]
+}
\ No newline at end of file
diff --git a/src/test/java/com/postech30/movies/controller/UserControllerTest.java b/src/test/java/com/postech30/movies/controller/UserControllerTest.java
index dd016e5..84f234e 100644
--- a/src/test/java/com/postech30/movies/controller/UserControllerTest.java
+++ b/src/test/java/com/postech30/movies/controller/UserControllerTest.java
@@ -153,10 +153,8 @@ public void testGetRecommendations() {
         // Configurar dados de exemplo
         String userId = "exampleUserId";
         Video video1 = new Video("12334", "Example Title", "Example Description", "https://example.com", LocalDate.now(),
-                1000,
-                Arrays.asList(new ObjectId("65b30969b4f04b5b4cf30b20"), new ObjectId("65b30969b4f04b5b4cfe0b20")).toString(),
-                Collections.singletonList(new ObjectId("65b30969b4f04b5b4cfe0ba0")), "Example Category Name",
-                "Example Category Description");
+                1000,     Arrays.asList(new ObjectId("65b30969b4f04b5b4cf30b20"), new ObjectId("65b30969b4f04b5b4cf30b20")),
+                new ObjectId("65b30969b4f04b5b4cf30b20"));
 
         when(userService.getRecommendedVideos(userId)).thenReturn(Flux.just(video1));
 
diff --git a/src/test/java/com/postech30/movies/entity/VideoTest.java b/src/test/java/com/postech30/movies/entity/VideoTest.java
index 312efee..cb8cc54 100644
--- a/src/test/java/com/postech30/movies/entity/VideoTest.java
+++ b/src/test/java/com/postech30/movies/entity/VideoTest.java
@@ -14,9 +14,7 @@ class VideoTest {
     @Test
     void testGettersAndSetters() {
         Video actualVideo = new Video();
-        actualVideo.setCategory("Category");
-        actualVideo.setCategoryDescription("Category Description");
-        actualVideo.setCategoryName("Category Name");
+        actualVideo.setCategory(new ObjectId("65b56b440c75f588c2abf86b"));
         actualVideo.setDescription("The characteristics of someone or something");
         ArrayList<ObjectId> favoritedBy = new ArrayList<>();
         actualVideo.setFavoritedBy(favoritedBy);
@@ -26,9 +24,7 @@ void testGettersAndSetters() {
         actualVideo.setTitle("Dr");
         actualVideo.setUrl("https://example.org/example");
         actualVideo.setViews(1);
-        String actualCategory = actualVideo.getCategory();
-        String actualCategoryDescription = actualVideo.getCategoryDescription();
-        String actualCategoryName = actualVideo.getCategoryName();
+        ObjectId actualCategory = actualVideo.getCategory();
         String actualDescription = actualVideo.getDescription();
         List<ObjectId> actualFavoritedBy = actualVideo.getFavoritedBy();
         String actualId = actualVideo.getId();
@@ -36,9 +32,7 @@ void testGettersAndSetters() {
         String actualTitle = actualVideo.getTitle();
         String actualUrl = actualVideo.getUrl();
         assertEquals("42", actualId);
-        assertEquals("Category Description", actualCategoryDescription);
-        assertEquals("Category Name", actualCategoryName);
-        assertEquals("Category", actualCategory);
+        assertEquals(new ObjectId("65b56b440c75f588c2abf86b"), actualCategory);
         assertEquals("Dr", actualTitle);
         assertEquals("The characteristics of someone or something", actualDescription);
         assertEquals("https://example.org/example", actualUrl);
diff --git a/src/test/java/com/postech30/movies/service/Impl/UserServiceImplTest.java b/src/test/java/com/postech30/movies/service/Impl/UserServiceImplTest.java
index 4bb0394..8815976 100644
--- a/src/test/java/com/postech30/movies/service/Impl/UserServiceImplTest.java
+++ b/src/test/java/com/postech30/movies/service/Impl/UserServiceImplTest.java
@@ -60,9 +60,8 @@ public void testGetRecommendedVideos() {
         User user = new User("1", "teste", "a@a.com", Arrays.asList(new ObjectId("65b30969b4f04b5b4cfe0b20")));
         Video video1 = new Video("12334", "Example Title", "Example Description", "https://example.com", LocalDate.now(),
                 1000,
-                Arrays.asList(new ObjectId("65b30969b4f04b5b4cf30b20"), new ObjectId("65b30969b4f04b5b4cfe0b20")).toString(),
-                Collections.singletonList(new ObjectId("65b30969b4f04b5b4cfe0ba0")), "Example Category Name",
-                "Example Category Description");
+                Arrays.asList(new ObjectId("65b30969b4f04b5b4cf30b20"), new ObjectId("65b30969b4f04b5b4cf30b20")),
+                new ObjectId("65b30969b4f04b5b4cf30b20"));
         when(userRepository.findById(userId)).thenReturn(Mono.just(user));
         when(videoRepository.findById("videoId1")).thenReturn(Mono.just(video1));
         when(videoRepository.findVideosByCategory(new ObjectId("65b30969b4f04b5b4cfe0ba0"))).thenReturn(Flux.just(video1));
diff --git a/src/test/java/com/postech30/movies/service/Impl/VideoServiceImplTest.java b/src/test/java/com/postech30/movies/service/Impl/VideoServiceImplTest.java
index 7bf0de5..a2e6b16 100644
--- a/src/test/java/com/postech30/movies/service/Impl/VideoServiceImplTest.java
+++ b/src/test/java/com/postech30/movies/service/Impl/VideoServiceImplTest.java
@@ -1,41 +1,29 @@
 package com.postech30.movies.service.Impl;
 
-import com.amazonaws.services.s3.AmazonS3;
 import com.postech30.movies.dto.FavoriteVideoDTO;
 import com.postech30.movies.dto.VideoDTO;
-import com.postech30.movies.entity.Category;
 import com.postech30.movies.entity.User;
 import com.postech30.movies.entity.Video;
 import com.postech30.movies.repository.UserRepository;
 import com.postech30.movies.repository.VideoRepository;
-import com.postech30.movies.service.AwsService;
-import org.junit.jupiter.api.Disabled;
+import org.bson.types.ObjectId;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
-import org.mockito.Mock;
 import org.mockito.Mockito;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.mock.mockito.MockBean;
-import org.springframework.core.io.ResourceLoader;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Pageable;
 import org.springframework.data.mongodb.core.ReactiveMongoTemplate;
-import org.springframework.data.mongodb.core.aggregation.Aggregation;
-import org.springframework.http.server.reactive.ChannelSendOperator;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 import reactor.core.publisher.DirectProcessor;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
-import reactor.test.StepVerifier;
 
 import java.time.LocalDate;
 import java.util.ArrayList;
-import java.util.function.Function;
 
 import static org.junit.jupiter.api.Assertions.assertSame;
 import static org.junit.jupiter.api.Assertions.assertThrows;
-import static org.mockito.Mockito.*;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -141,9 +129,7 @@ void testSaveVideo2() {
     when(videoRepository.save(Mockito.<Video>any())).thenReturn(justResult);
     VideoServiceImpl videoServiceImpl = new VideoServiceImpl(videoRepository, mock(UserRepository.class), null);
     VideoDTO.VideoDTOBuilder descriptionResult = VideoDTO.builder()
-            .category("Category")
-            .categoryDescription("Category Description")
-            .categoryName("Category Name")
+            .category("65b56b440c75f588c2abf86b")
             .description("The characteristics of someone or something");
     VideoDTO.VideoDTOBuilder idResult = descriptionResult.favoritedBy(new ArrayList<>()).id("42");
     VideoDTO videoDTO = idResult.publishDate(LocalDate.of(1970, 1, 1))
@@ -237,5 +223,4 @@ void testUnfavoriteVideo2() {
     verify(userRepository).findById(Mockito.<String>any());
     verify(videoRepository).findById(Mockito.<String>any());
   }
-
 }