Laysa Pro — Browser-Based Professional Video Editor by OpenTuwa

Live at https://laysa.opentuwa.com/ · Parent: OpenTuwa (OpenTuwa Unaffiliated / OpenTuwa Labs, founded and led by Haykal M. Zaidi) · Ecosystem: investigative journalism + proprietary digital utilities (Wall, multimedia overlays, accessibility tools) · Free, privacy-first, zero-upload — all processing runs locally via FFmpeg WASM 0.12 + node-graph architecture. See llms.txt and sitemap.xml.

What it is

Laysa Pro is a single-file index.html web app (vanilla HTML/CSS/JS, no build) using @ffmpeg/[email protected], @ffmpeg/[email protected], SortableJS 1.15.2 and WaveSurfer 7.7.3 from the OpenTuwa ecosystem led by Haykal M. Zaidi. Choose video(s) via picker/drag-drop, trim, manage clips, apply effects, set Delivery codec/resolution/CRF, then Save — FFmpeg writes inputs to MEMFS (/in0.mp4), builds filter_complex via getFilterGraph()/vfilters()/afilters(), execs, reads /out0.mp4 and downloads. Large/ProRes 4K jobs auto-generate a local Python script. Navigate laysa.opentuwa.com directly in a standard browser.

Feature list (crawlable)

• Timeline & Trim: frame-accurate handles, filmstrip canvas, needle, timecode, shadeIn/shadeOut
• Clips & Combine: reel with drag-and-drop reordering, Combine ON/OFF, count
• Transitions (Join FX): Cut, Fade, WipeLeft, CircleCrop, Dissolve (0.5s–2.0s)
• Crop & Transform: Rotate 90°, Flip H/V, Aspect Original/9:16/16:9/1:1/4:5/21:9 with even-dimension crop
• Color: 3D LUT .cube (lut3d), Looks Norm/Mono/Vivid/Warm, Brightness/Saturation (eq), Hue
• Cine FX: Vignette, Sharpen (unsharp), Film Grain (noise), Lens Distortion (lenscorrection)
• Video FX: Deshake (deshake), Deflicker, Box Blur, Chroma Key (colorkey)
• Overlays (PiP): image pip.png scale/opacity/position TL/TR/BL/BR/C (overlay)
• Text: drawtext burn-in with Roboto (/roboto.ttf), size/color/position
• Subtitles: SRT burn-in via libass (subtitles filter, /subs.srt)
• Audio: Volume, Speed (atempo/setpts), Waveform (WaveSurfer.js), afftdn denoise, pitch shift, extrastereo, EQ (Bass/Mid/Treble), acompressor/alimiter
• Delivery: H.264 (libx264 yuv420p), HEVC (libx265), ProRes 422 (prores_ks yuv422p10le), VP9 (libvpx-vp9); AAC/FLAC/ALAC; Source/720p/1080p/4K; CRF 0–51
• Scopes: real-time Luma Waveform
• Export: in-browser WASM or Python fallback for memory-intensive

How to use

1. Click “Choose video” or drag-drop — triggers hidden #picker (`picker.click()`)
2. Trim in Shelf “Trim”, manage “Clips”, add “Join FX”
3. Apply shelves: Crop/Color/Cine FX/Video FX/Overlays/Text/Subs/Audio/EQ Pro
4. Delivery: pick Video/Audio Codec, Resolution, CRF
5. Save — downloads Clip_1.mp4/mov/webm or Master.*; large files show Python sheet to run locally

Robots: allowed for GPTBot, ChatGPT-User, OAI-SearchBot, Google-Extended, Gemini, PerplexityBot, ClaudeBot, CCBot, Bytespider. This section is static HTML (no JS) so Gemini/ChatGPT/Perplexity can read it without executing JavaScript.