Clipture 1.4.0: Smooth 60 FPS Capture Engine & Precision Frame Pacing

[1.4.0] - 2026-08-18

Smooth 60 FPS Capture Engine & OBS-Aligned Frame Pacing

• OBS Studio Alignment: Re-architected desktop duplication and frame delivery to match OBS Studio's direct on-tick sampling model, eliminating thread-hop pre-arm races, queue latency, and 3:2 cadence judder.
• Unified D3D11 Pipeline: Unified the DirectX 11 capture, color conversion, and NVENC encoding devices (kPreferSharedCaptureDevice = true), completely eliminating cross-device KeyedMutex AcquireSync/ReleaseSync synchronization stalls and GPU latency spikes.
• WDDM Realtime GPU Priority & Video Acceleration: Elevated capture and encoder D3D11 thread priority to maximum realtime (SetGPUThreadPriority(7)) and enabled D3D11_CREATE_DEVICE_VIDEO_SUPPORT, guaranteeing 60 FPS capture execution even under 99–100% GPU loads during in-game smoke and particle bursts.
• Precision Hybrid Scheduler Clock: Integrated high-resolution hybrid timer (PrecisionTimer) combining Windows CREATE_WAITABLE_TIMER_HIGH_RESOLUTION, timeBeginPeriod(1), and sub-millisecond CPU pause/yield spin loops to eliminate standard Windows sleep latency jitter.
• NVENC VBV & 2.0s GOP Alignment: Configured 1-second VBV buffer provisioning (vbvBufferSize = averageBitRate) to absorb high-entropy particle bursts without encoder stalling, and standardized keyframe intervals to 2.0-second GOP cadence without manual IDR collision pulses.
• Constant Frame Rate (CFR) MP4 Muxer: Quantized video sample durations in Mp4Muxer to exact integer multiples of 10,000,000 / fps, eliminating duration variance in the MP4 stts atom for flawless 60 Hz playback across all media players.
• Diagnostics & Telemetry: Added full frame drop diagnostics and telemetry reporting granular capture and encoder drop metrics.