Blog
Guides, tutorials, and tips for Yfli Screen Recorder.
Stop Switching to HandBrake — We Built FFmpeg Into Our App
Why should you need a separate app just to convert your recording to MP4? We integrated a 10-year FFmpeg pipeline directly into Yfli Screen Recorder — here's the architecture, the trade-offs, and why we couldn't do it all in real time.
Your AI Subtitles Have Errors — Here's How to Fix Them Fast
AI-generated subtitles aren't 100% accurate — and neither is any tool on the market. The difference between a frustrating workflow and a fast one isn't raw accuracy, it's how quickly you can correct the mistakes.
Whisper Was Slow and Garbage on Intel Mac — Here's How We Fixed It
Debugging whisper.cpp on Intel Mac: a 4-minute audio file took 5+ minutes to process and output was gibberish. Two independent bugs, one parameter that made it 25× faster, and why we bet on offline batch processing for subtitle export.
Add Subtitles to Zoom, Meet & QuickTime Recordings — Free AI Method
Generate subtitles from any meeting recording on Mac using offline AI. Works with Zoom, Google Meet, Teams, and QuickTime files — no upload, no account, no per-minute charges.
Transcribe Audio to Text Without Uploading — Private AI Guide for Mac
Your Mac can run powerful AI speech recognition entirely offline. No upload, no cloud, no account required. Step-by-step guide to transcribing interviews, meetings, and recordings privately using on-device AI.
Realtime Speech-to-Text on macOS — Three Architectures Compared
A comprehensive analysis of three ASR architectures for realtime subtitles on macOS: pure cloud streaming, on-device Whisper, and hybrid edge-cloud. Covers latency budgets, streaming diarization challenges, and engineering trade-offs from building Yfli Screen Recorder's subtitle feature.
Yfli Screen Recorder v4.1.0 — Free for Everyone + New Pro Features
v4.1.0 is our biggest strategy shift yet — screen, audio, and camera recording are now completely free with no time limits. Plus, three highly-requested features land in one release.
Mac Screen Recording Shows Black Screen? Here's How to Fix It
Screen recording black screen on Mac? Step-by-step troubleshooting guide covering DRM protection, browser hardware acceleration, and macOS permissions. Fix it in 5 minutes.
DRM Protection and macOS Screen Recording — A Technical Reference
A comprehensive technical reference on how DRM (FairPlay, Widevine, HDCP) interacts with macOS screen recording. Covers the capture pipeline, WindowServer compositor, and ScreenCaptureKit behavior.
Building a Screen Recorder — DRM, Black Screens & Hard Decisions
A screen recorder developer's honest account: 340+ user bug reports, 3 failed technical solutions, and why we chose not to support DRM recording. Real test data, real decisions.
QuickTime Is a Player, Not a Recorder — What to Use on Mac Instead
QuickTime's full name tells you everything: it's QuickTime Player, not QuickTime Recorder. Recording is a bonus feature bolted onto a media player. Here's what that distinction costs you in real workflows.
Yfli Screen Recorder vs QuickTime — Which One Is Right for You?
Is QuickTime enough? A real-world comparison of Yfli Screen Recorder vs QuickTime Player across three scenarios: tutorials, podcast recording, and scheduled capture. We compare formats, quality controls, annotations, mouse effects, and more.
How to Record Screen with Webcam on Mac — Complete Guide
Learn how to record your screen and webcam simultaneously on Mac. Step-by-step tutorial with Yfli Screen Recorder for picture-in-picture webcam overlay in tutorials, presentations, and demos.
How to Record System Audio on Mac — Complete Guide
Learn how to record system audio on macOS using Yfli Screen Recorder with BlackHole. Step-by-step guide to capture app sounds, streaming audio, and more.