Release Notes

Changelog

Every RecFast update, with measurable improvements.

v3.1.0PERFORMANCE2026-02-27

Render Engine Overhaul

Complete rewrite of the render pipeline — up to 4.8x faster exports with zero quality loss.

Total render time (23s recording)

228s47s

4.8x

Background mask blend

48ms/frame9ms/frame

5.3x

Frame resize (downscale)

23ms/frame2.8ms/frame

8.2x

Click visual effects

5ms/frame0.25ms/frame

20x

SIMD-accelerated mask blending via cv2.multiply — replaces float64 NumPy operations
Threaded frame reader & writer — overlaps I/O with processing (34ms read + 16ms write hidden)
Pre-composited decoration layer — shadow + overlay combined into a single blend per frame
INTER_AREA resize for downscaling — 8x faster than LANCZOS4 with equivalent quality
ROI-based click effects — processes only the 200px region around clicks instead of full frame
Binary search for zoom/click/keystroke lookups — O(log n) instead of O(n)
GC disabled during render, smart frame.copy() elimination on duplicate frames

v3.1.0AUDIO2026-02-27

Intelligent voice detection, dynamic ducking, and improved DeepFilter integration for any microphone quality.

Pre-normalization for quiet microphones — boosts signal before DeepFilter so noise removal works on any mic
Dynamic ducking threshold — adapts to actual voice level instead of fixed dBFS cutoff
Polyphonic keyboard sounds with natural variation and per-key sound selection
Precise audio/video sync — SFX placement aligned with captured frame timestamps
Batched NumPy audio overlay — all sounds mixed in a single pass instead of sequential copies

v3.0.0FEATURES2026-02-20

Pro users can now export silky smooth 60fps videos from 30fps recordings.

60fps output from 30fps source via intelligent frame duplication
Hardware-accelerated encoding detection (NVENC/QSV/AMF) with automatic CPU fallback
DeepFilter AI voice enhancement for Pro — removes background noise in real-time

Ready to try it?