public static void downloadVideo(String videoUrl, String outputPath) // yt-dlp command: -f bestvideo+bestaudio --merge-output-format mp4 List<String> command = new ArrayList<>(); command.add("yt-dlp"); command.add("-f"); // Format selection command.add("bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best"); command.add("-o"); // Output template command.add(outputPath + "/%(title)s.%(ext)s"); command.add(videoUrl);
Instead, you have two options:
Remember: With great downloading power comes great responsibility. Use your Java skills to archive educational content or backup your own uploads—not to pirate the latest Marvel movie. youtube java download
| Error Message | Cause | Java Solution | | :--- | :--- | :--- | | HTTP 403 Forbidden | YouTube blocked your IP due to rapid requests | Add --sleep-interval 5 or use Thread.sleep(3000) between downloads | | signature cipher | Old library cannot decrypt the n-parameter | Update your wrapper library or switch to yt-dlp subprocess | | Video unavailable | Age-restricted or private video | Add cookie export: --cookies cookies.txt in your command | | OutOfMemoryError | Downloading a 4K 60fps video | Use streaming buffer; don't load entire video into RAM | | ffmpeg not found | Merging video+audio requires FFmpeg | Download FFmpeg and add it to PATH or specify path in ProcessBuilder | You can build a Swing or JavaFX application
Non-technical users want a button. You can build a Swing or JavaFX application using the logic above. public static void downloadVideo(String videoUrl
: A specialized API on GitHub for developers who want to integrate YouTube downloading capabilities into their own Java projects with just a few lines of code. How to Download and Install Java for These Tools
public class YouTubeJavaDownloader