Browser-based video compositor built on WebGPU
Details
- External ID
- 46959456
- Source
- HN
- Company
- —
- Product
- Browser-based video compositor built on WebGPU
- Website domain
- masterselects.com
- Launched
- Feb. 10, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.10512129380053908
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
GitHub: https://github.com/Sportinger/MasterSelectsI built this Browser-based video compositor with a GPU-first architecture. No Canvas 2D in the rendering path — video textures go in as texture_external (zero-copy), compositing runs through a ping-pong WGSL shader pipeline, and export captures frames directly from the GPU canvas via WebCodecs.39 GPU effects, 37 blend modes, nested compositions, keyframe animation with bezier curves, vector masks, 10-band live EQ, video scopes, and AI-driven editing via GPT function calling. 13 production dependencies. The compositor, all shaders, timeline, audio mixer, mask engine, and export pipeline are built from scratch.I'm a video artist, not a developer. Built this entirely with Claude. Things break, but when it works, it works.Chrome/safari with WebGPU required. Firefox and webGPU have problems.
Enrichment
- Theme
- code-driven AI video and animation
- Vertical
- Media & entertainment
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- browser-based video compositor
- Manually corrected
- False
Could you build this?
No Building a real-time GPU video compositor using raw WebGPU WGSL ping-pong shaders, custom video texture pipelines, audio stem separation, and 3D Gaussian splatting requires deep graphics engineering expertise.
What it would actually take: The application requires an advanced graphics rendering pipeline written in TypeScript, WebGPU, and raw WGSL shaders for multi-layer compositing, blend modes, and color grading without DOM/Canvas bottlenecks. It also requires complex browser media pipelines involving WebCodecs, Web Audio API DSP nodes, custom WebAssembly workers for audio stem separation / speech transcription, and a 3D rasterization pipeline (e.g., Gaussian splatting and mesh rendering).
Discussion
5 comments analyzed.
Competitors mentioned: Kdenlive
Concerns raised: Firefox doesn't support WebGPU fully, WebGPU not available in all browsers
Feature requests: Native version using Tauri, Support for more codecs beyond WebCodecs
Competitors
Other products that read as similar to this one — 255 launches clear the similarity bar, closest 8 shown.
Attention rank: #243 of 256 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 101 days after the earliest competitor.
- Zephyr3D · hn · 2025-11-26 · 9 upvotes · similarity 0.55
- ChartGPU · hn · 2026-01-21 · 670 upvotes · similarity 0.52
- VidStudio, a browser based video editor that doesn't upload your files · hn · 2026-04-21 · 301 upvotes · similarity 0.51
- vgpu · ph · 2026-09-22 · 35 upvotes · similarity 0.50
- a Rust ray tracer that runs on any GPU · hn · 2025-11-03 · 95 upvotes · similarity 0.48
- FluidX Interactive Canvas · ph · 2026-09-17 · 1 upvotes · similarity 0.46
- Video to Frames · ph · 2026-09-09 · 1 upvotes · similarity 0.46
- I built a tool that creates videos out of React code · hn · 2025-12-24 · 6 upvotes · similarity 0.46
Other launches for this product
- No other launches for this product.
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