| Tool | Key Features | |------|---------------| | OBS Studio | Open-source, scene recording, replay buffer, no watermark, highly customizable | | Outplayed (by Overwolf) | Auto-detects game moments, free with unlimited storage (quality limited), highlights creation | | NVIDIA ShadowPlay (GeForce Experience) | Hardware-accelerated, instant replay, performance-friendly (NVIDIA GPUs only) | | Xbox Game Bar (Windows built-in) | Native to Windows 10/11, background recording, simple interface | | Steam Recording (Beta) | Built into Steam, timeline markers, cloud saves for clips |

Medalhook64.dll is a DLL file that might be associated with various software applications or games, particularly those offering achievements or rewards systems, similar to what one might find on medal boards. The "64" in the filename suggests it's a 64-bit version of the DLL, indicating it's designed for use on 64-bit versions of the Windows operating system.

The file name breaks down functionally:

Why does it exist? To record high-performance gameplay with minimal impact on frame rates, screen capture software cannot simply "watch" the screen like a video camera (which is CPU-intensive). Instead, Medal uses a Hook.

When you launch a game, Medal injects medalhook64.dll into the game's memory space. This DLL intercepts (hooks) the graphics API calls (such as DirectX 11, DirectX 12, or Vulkan) that the game sends to your GPU. By intercepting these frames, Medal can encode the video stream directly from the GPU memory without significantly impacting the game's rendering loop.