React Native dev @margelo_com https://xitter.cf/t.co/XJtV6KI1aK
Valencia, Spain
Joined October 2021
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Building a video editor SDK for React Native, powered by Nitro ⚡️
Trim, layer, add effects, and export with native performance — using your own UI.
Here’s a first look 🎬
#ReactNative #nitro
Video Editor SDK update
🎧 Audio
• -14 LUFS normalize
• Ducking, true-peak limiter
• Clip boost up to +12 dB
🍎 iOS
• Own VideoToolbox paused frames
• Trim on pause: 90-161 → 40-61 ms
• Paused edits p95: 88 → 35 ms
• Fixed playhead jumping back on pause
🤖 Android
• Own MediaCodec scrub (opt-in)
• 100 sessions, 0 stale/black frames
• Scrub frames identical to export
• Preview: crop, rotation, keyframes
• Preview: text overlays, blur-fill
• Background export via service
• Worked around Media3 same-ms seek skip
• Fixed silent audio after scrub
✂ Both platforms
• Frame-exact trims at 23.976 fps and VFR
• Fixed neighbour-frame bug, preview + export
• Clip speed plays live in preview
🎬 Transitions
• Android export shaders done
• iOS preview in progress
🧠 Shared C++ core
• Undo/redo history moved in
🤖 Made with AI
Today's Video Editor SDK update:
• iOS: animated overlays (enter/exit, fades) in preview and export
• Android: photo clips rebuild 9× faster in preview on a Galaxy A13 (1.39 s → 0.15 s)
• Found a Media3 bug that drops frames at open-GOP clip ends, sent a fix upstream
• editor open → first frame: iPhone 13 313 → 226 ms, iPhone 16 Pro 256 → 184 ms
• play after seek on iPhone 13: ~0.5 s → ~0.2 s
• blur-fill backgrounds: planned in the shared C++ core, GPU passes next
🤖 Made with AI
video-editor SDK updates:
• Frame-exact scrubbing
• iOS color grading, curves & 3D LUTs in preview + export
• Paused preview edits on iPhone 13: 44 → 27 ms median
• Audio time-stretching: 46–62% less CPU time in Galaxy A13 / Pixel 8a benchmarks
🤖 Made with AI
react-native-sync-tasks 0.2.0 is out 🚀
• Native HTTP, no Rust: 51 MB → 27 kB
• ETag/304, backoff, jitter, timeouts
• POST/PUT/PATCH/DELETE + response headers
• stop() aborts in-flight requests
• New Architecture, RN 0.77+
github.com/pioner92/react-na…
🤖 Made with AI
react-native-auto-skeleton 0.1.33 is out 🦴
• No more hidden views after unmount (iOS)
• Old Arch gradient crash fixed
• Correct shapes in TouchableOpacity
• Android builds on AGP 9
🤖 Made with AI
Metalterm 0.2.1 is out
• Ctrl shortcuts work on non-Latin layouts, incl. Claude Code
• Korean & other IMEs compose in Find and the palette
• No more window flash when switching tabs
• zsh history shared with your other terminals
• Fixes for fast-syntax-highlighting and Pure
🤖 Made with AI
Great news 🔥🔥🔥
Announcing Apex: agentic coding model for mobile and web, specialized in React.
We built Apex from a single idea: can an open-weight model deliver frontier-level performance at lower cost?
Yes. Apex is SOTA in React Native and Next.js.
Try it now: apex.callstack.com
Alex retweeted
I just built one of the fastest mobile media-encryption demos in React Native.
A 2.21 MB photo, encrypted and decrypted entirely on-device with OpenMLS:
38.3 MB/s encrypt
46.5 MB/s decrypt
Rust + Nitro Modules + zero-copy JSI.
Full native performance, exposed through React Native. – at Berlin, Germany
Metalterm 0.1.12 is out ⚡️
- Custom flat themes with Ghostty and Kitty import
- Windows return to their macOS Spaces with splits and pane directories
- Responsive typing across native tabs
- Better wrapped links, Unicode Find, emoji, and display recovery
Metalterm 0.1.11 is out ⚡️
• Reliable Nushell startup
• Shortcuts work with non-Latin layouts
• Click to move the live shell cursor
• Better Input Dock selection & deletion
• Literal path pasting in Nushell and fish
metalterm.dev
🤖 Made with AI
