H.264 (AVC) Vertical 1080×1920 @ 30fps (9:16) — Keyframe Interval (GOP) & Fast-Start Web Streaming Spec
Engineering export and mastering reference for H.264 (AVC) Vertical 1080×1920 @ 30fps (9:16) (recommended bitrate: 12–16 Mbps, TikTok, Reels & Shorts Safe Spec)—covering Keyframe Interval (GOP) & Fast-Start Web Streaming Spec in Wonek Video Studio on macOS.
Exporting with the wrong codec profile, bitrate, or audio loudness can turn a crisp 4K macOS timeline into a muddy, heavily re-compressed upload. Wonek Video Studio (id6761376446) uses Apple Silicon VideoToolbox hardware encoding to render H.264 (AVC) Vertical 1080×1920 @ 30fps (9:16) cleanly every time.
1. Complete Video & Audio Mastering Table
| Parameter | Verified Specification | Wonek Video Studio Export Engine |
|---|---|---|
| Codec & Resolution Preset | H.264 (AVC) Vertical 1080×1920 @ 30fps (9:16) | Selectable directly in the Export & YouTube Publish modal on macOS. |
| Recommended Bitrate | 12–16 Mbps | Preserves fine detail in burned-in gradient subtitles and macOS screen recordings. |
| Hardware Acceleration | TikTok, Reels & Shorts Safe Spec | Uses dedicated M1/M2/M3/M4 ProRes and HEVC/H.264 media engines. |
| Audio Loudness & Sample Rate | -14 LUFS / -1.0 dBTP @ 48 kHz Stereo | Pairs cleanly with DeepFilterNet noise removal and local Maya1 voiceovers. |
| Focus Engineering Topic | Keyframe Interval (GOP) & Fast-Start Web Streaming Spec | Verified for YouTube, Shorts, Reels, TikTok, and archival delivery. |
2. Why Native Apple Silicon Encoding Beats Browser Video Editors
Web-based editors throttle export bitrates and re-compress your footage through slow cloud workers. Because Wonek Video Studio is a native macOS application built on AVFoundation and Metal, your Mac's dedicated media engines encode H.264 (AVC) Vertical 1080×1920 @ 30fps (9:16) locally at full bitrate with zero upload bottlenecks.
Related 4K/60fps Codec, Bitrate & Audio Specifications
Frequently Asked Questions
For H.264 (AVC) Vertical 1080×1920 @ 30fps (9:16), the recommended target bitrate is 12–16 Mbps (TikTok, Reels & Shorts Safe Spec) paired with 48 kHz stereo audio normalized around -14 LUFS.
Yes. Wonek Video Studio leverages macOS VideoToolbox and Apple Silicon media engines to export H.264, HEVC (H.265), and Apple ProRes timelines rapidly on M1, M2, M3, and M4 Macs.