# MetalPetal/MetalPetal

A GPU accelerated image and video processing framework built on Metal.

Repository: https://github.com/MetalPetal/MetalPetal
Canonical: https://ross.abutalabs.com/products/metalpetal
Homepage: https://github.com/MetalPetal/MetalPetal
Language: Objective-C
License: MIT
License Family: permissive
Topics: metal, image-processing, rendering, gpu, image, video-processing, real-time, video, filter, ios, macos, gpgpu, opengl, multimedia, maccatalyst, tvos, apple-silicon
Last push: 2024-04-10T13:30:17+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3356, "days_push": 875, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2179, forks 288 (observed 2026-08-28T04:06:23.062986+00:00)

## What it is
MetalPetal is a GPU-accelerated image and video processing framework built on Apple's Metal API. It provides an image/filter/render pipeline with built-in filters, custom shader support, and integrations with Core Image, SceneKit, and SpriteKit.

## Use cases
- apply gpu-accelerated filters to images in an ios app
- process live camera video in real time with metal shaders
- build a photo or video editing pipeline on apple platforms
- write custom metal shader filters for image effects
- replace core image for faster image rendering
- render filtered images to a display or video file

## When to choose
- you need real-time gpu image/video processing on ios, macOS, tvOS, or Mac Catalyst
- you want to write custom Metal shaders with a structured filter pipeline
- core image is too slow or too inflexible for your rendering needs

## When to avoid
- you target non-Apple platforms (no Metal support)
- you need a cross-platform CPU-based image library
- your project cannot adopt Objective-C/Swift or Metal

## Facets
- artifact type: framework
- maturity: active
- function: image-processing, video-processing, graphics, gpu-computing
- domain: image-processing, graphics, media
- platform: cpp
- tags: metal, gpu-accelerated, real-time, apple-platforms, filters, core-image-alternative, objective-c, swift, video, ios, macos

## Member repositories
- MetalPetal/MetalPetal (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:23.062986+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:48:45.316933+00:00, confidence not recorded.
  - readme: https://github.com/MetalPetal/MetalPetal (fetched 2026-08-28T04:06:23.062986+00:00, sha c9683208d81e)
  - homepage: https://github.com/MetalPetal/MetalPetal (fetched 2026-08-29T10:28:37.474611+00:00, sha efbac8081a66)
- Data as of 2026-08-30T08:39:29.467469+00:00.