IT WORKS.

src/main/java/com/example/video_downloader/services/ProcessService.java

@@ -6,11 +6,17 @@ import com.example.video_downloader.repositories.VideoRepository;
 import jakarta.annotation.PostConstruct;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.web.client.HttpClientErrorException;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.List;
 
+import static java.nio.file.Path.*;
+
 @Service
 public class ProcessService {
 
@@ -18,27 +24,29 @@ public class ProcessService {
     private VideoRepository videoRepository;
 
     @PostConstruct
-    public void validateVideos() throws IOException, InterruptedException {
+    public void validateVideos() throws HttpClientErrorException, IOException, InterruptedException {
         List<Video> response = videoRepository.findUrlByStatus(StatusEnum.NEW);
         for(Video video : response) {
             if(video.getStatus().equals(StatusEnum.NEW)){
-                downloadVideo(video.getUrl());
+                downloadVideo(video.getUrl(), video.getId());
+                Path filePath = Paths.get("downloads/" + video.getId() + ".webm");
+
+                if(Files.exists(filePath) && Files.isRegularFile(filePath)) {
+                    System.out.println("Apparently it exists mate.");
                     video.setStatus(StatusEnum.SAVED);
-                videoRepository.save(video);
                 } else {
-                return;
+                    System.out.println("Nah it does not exist mate.");
+                    video.setStatus(StatusEnum.FAILED);
+                }
+                videoRepository.save(video);
             }
         }
     }
 
     //@PostConstruct
-    public void downloadVideo(String url) throws InterruptedException, IOException {
-        try {
-            execute("yt-dlp", "youtube:player_client=android", url);
-        } catch (Exception e) {
-            System.out.println("Something went awry.");
-        }
-
+    public void downloadVideo(String url, Long id) throws HttpClientErrorException, InterruptedException, IOException {
+        String outputPath = "downloads/" + id + ".%(ext)s";
+        execute("yt-dlp", "-o", outputPath, url);
     }
 
     public void execute(String... command) throws InterruptedException, IOException {
@@ -46,7 +54,9 @@ public class ProcessService {
         builder.redirectOutput(ProcessBuilder.Redirect.INHERIT);
         builder.redirectError(ProcessBuilder.Redirect.INHERIT);
         Process process = builder.start();
-        process.waitFor();
+        int exitCode = process.waitFor();
+
+
     }