Record Screen + Floating Facecam + Internal Audio & Mic on iPhone, iPad & Mac 100% Free up to 1080p · Zero Watermarks · Instant Local MP4 · Live PiP Overlay
Get Reel Screen Recorder →

Screen Recording Encoding Specs, Frame Rates & Audio Sync (550 Guides)

Deep technical documentation on Constant Frame Rate (CFR) 60fps capture, Apple VideoToolbox hardware encoding, bitrate optimization, and zero-drift 48kHz audio synchronization.

Reel Screen Recorder encoding specs hub

Learn how to optimize visual sharpness, prevent Variable Frame Rate (VFR) audio drift, and size your MP4 exports for GitHub, Slack, Discord, YouTube, TikTok, and App Store Connect.

Specification AreaGuidesTechnical Coverage
Frame Rates & 60fps CFR11060fps lock, ProMotion 120Hz downsampling, zero-judder motion
Hardware Acceleration (VideoToolbox)110H.264/HEVC silicon encoding, FastStart MP4, SDR/HDR color
File-Size & Bitrate Optimization110480p/720p/1080p/Native bitrates, GitHub/Slack upload sizing
Audio Sync & 48kHz Troubleshooting110PTS clock alignment, AirPods sync, –14 LUFS loudness
Resolution & Viewport Scaling110Retina HiDPI mapping, 9:16 vs 16:9 aspect locks, safe zones

Frequently Asked Questions

Why don't Reel Screen Recorder MP4 files suffer from audio-video sync drift?

Reel Screen Recorder locks video capture to a Constant Frame Rate (CFR) and synchronizes both internal app audio and microphone input to a shared 48,000 Hz hardware presentation timestamp clock.

Your screen and your face, recorded in one clean take. Download Reel Screen Recorder (id6758941990) — free screen and Picture-in-Picture facecam recorder for iOS, iPadOS, and macOS.
Download on the App Store →