UltraVnc Screen Recorder

UltraVnc Screen Recorder captures full screen activity at high speed using the UltraVnc mirror driver. It records at 1280x1024 resolution and 15 FPS with online DivX compression, using only 25% CPU on a 3GHz processor. This leaves ample CPU for running other applications. The tool addresses limitations of other screen recorders, which suffer from low speed or high CPU usage during full-screen recording. Online compression typically requires disk-intensive codecs, but this integrates the mirror driver for a speed boost. It supports all VFW-compatible codecs on Windows 2000 and later. The screen recorder comes included in the driver setup.

Core Strengths:

• Captures full desktop activity to video.
• Built from open‑source CamStudio codebase for familiarity.
• Faster capture using mirror driver at up to 1280×1024×15 fps.
• Uses desktop duplication on modern Windows for speed.
• Distributed under a permissive open‑source license.

How It Works:

• Download the screen recorder binary from the official UltraVNC site.
• Launch the executable — no installation needed.
• Select full desktop or targeted capture region.
• Record screen activity into video format.
• Use mirror driver (optional for older versions) to increase capture performance.