Screen Recorder

Screen Recorder is a Windows desktop application for capturing screenshots and screen recordings. It uses Java Swing for the main interface and JavaFX for video playback.

What It Can Do

• Capture a selected rectangle, an application window, or the entire screen.
• Take screenshots and preview them in the built-in image viewer.
• Record video as MP4 with H.264 video and AAC audio.
• Include the mouse cursor in recordings when it can be captured by Windows.
• Pause, resume, and stop a recording while viewing the elapsed time.
• Capture microphone audio and Windows system audio independently, then mix enabled sources into the recording.
• Play completed recordings in the built-in video player.
• Save, copy, or share a completed screenshot or recording.

Requirements

• Windows, for the current WASAPI and native Windows integration.
• Java 22 or later.
• JavaFX libraries, including the Swing integration used by the application.
• JNA and JNA Platform native libraries.
• Xuggler/Xuggle media libraries and their native dependencies.
• lib/snoretoast.exe if Windows toast notifications are required.

The project is currently Windows-first. The system-audio implementation uses WASAPI and should not be expected to work unchanged on macOS or Linux.

Run From a Java IDE

1. Clone or open the repository in a Java IDE.
2. Configure the project with Java 22 or later.
3. Add the JavaFX, JNA, and Xuggler/Xuggle libraries required by the project.
4. Make sure the native libraries are available to the JVM.
5. Run com.oranbyte.screenrec.Main.

The application initializes JavaFX and then opens the Swing main window.

First Capture

1. In the main window, choose Screenshot or Video.
2. Choose Rectangle, Window, or Entire Screen.
3. Click New.
4. Select the capture area. The window mode selects an available window under the pointer; rectangle mode lets you draw an area.
5. For a screenshot, finish the selection to open the image preview.
6. For a video, click Start. A countdown appears before capture begins.
7. Use pause/resume as needed, then click stop to finish the recording.

The recorder adjusts the selected dimensions to even values before encoding, which is required by the configured video encoder.

Output Location

Recordings are currently written as timestamped MP4 files named like Recording 2026-08-27 143015.mp4 in the directory configured by AppConstant.SAVE_LOCATION. In the current source configuration, that directory is C:\Users\Shubham\Desktop.

After a capture is complete, the main window exposes actions to save a copy, copy the file to the system clipboard, and open the sharing dialog.

Troubleshooting

No system audio

Confirm that Windows has an active playback device and that the application can access it. System audio is captured through WASAPI loopback and is Windows-specific.

No microphone audio

Check that Windows has an available microphone and that microphone access is allowed. The microphone toggle can be changed while a recording is active.

Recording does not start

Create a valid selection before pressing Start. The selected width and height must remain greater than zero after even-dimension adjustment.

Sharing cannot find a device

Nearby sharing uses LocalSend discovery on the local network. Confirm that both devices are on the same network, then refresh the nearby-device list. Firewall rules or network isolation can prevent discovery.