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nativ
Nativ is a native macOS app that lets you run AI models locally on Apple silicon, offering chat, model management, performance analytics, and an OpenAI/Anthropic-compatible API server.
AI 仓库情报摘要
FR-AI / ANALYSIS为什么值得关注
它巧妙地将两个优秀的开源项目（ntsc-rs 和 RetroArch 着色器）融合为一个原生 Mac 界面，支持关键帧动画和确定性导出，让创作者无需命令行或复杂设置即可使用真实的复古电视效果。
适合谁使用
- 寻求复古视频美学的 macOS 用户（Apple Silicon/Intel）
- 复古游戏爱好者和像素艺术家
- 视频编辑和动态设计师
- 演示场景或复古计算爱好者
典型使用场景
- 为游戏画面添加真实的 CRT 和 VHS 效果
- 为现代视频项目增加模拟电视退化效果
- 通过关键帧将静态图像动画化为复古风格视频
- 导出复古风格的 GIF 用于社交媒体或网页
项目优势
- 将 ntsc-rs 模拟信号仿真与 RetroArch CRT 着色器无缝集成到单一工作流中
- 支持整个效果链的关键帧动画，可创建复杂的复古视频
- 导出为 H.264、HEVC、ProRes 和动画 GIF，输出确定性高（相同设置=相同像素）
- 提供 60 多个 NTSC 参数和 7 个 CRT 着色器预设，运行时参数完全可调
使用前须知
- NTSC 阶段在 CPU 上以源全分辨率运行；4K 以上源在动画或播放时会导致预览帧率下降
- Intel 版本由社区测试，非作者测试
- 没有撤销功能；实验前应保存预设
- 部分 CRT 着色器参数在编译时被禁用（静态），无效
README 快速开始
NTSCRT
Make any image or video look like it's playing on a 1980s TV. NTSCRT runs your media through a real analog signal emulation (ntsc-rs — composite artifacts, tape noise, head switching) and then through RetroArch's CRT shaders (via librashader — scanlines, phosphor masks, glow), frame-identical to RetroArch itself.
Full disclosure: this is two much better projects hacked together. All of the actual image magic belongs to ntsc-rs and the RetroArch shader community; NTSCRT is the native Mac interface that connects them into one pipeline:
your image/video → NTSC/VHS signal degradation (full res) → downscale to retro resolution → CRT shader → screen
Download
Grab the DMG from Releases, open it, and drag NTSCRT to Applications.
Requirements: macOS 14 or later. The app is a universal binary (Apple Silicon + Intel).
Intel note: I build and test NTSCRT on Apple Silicon and haven't personally tested the Intel build. Intel support exists thanks to a contributed fix (#1) verified by its author on an Intel iMac Pro — if something misbehaves on your Intel Mac, please open an issue.
Using the app
Toolbar — file actions live in the window toolbar: Open (⌘O) an image (PNG/JPEG/HEIC) or video (MP4/MOV), save/load a Preset (your entire configuration as a JSON file — downscale, VHS, shader, view, and the whole timeline: duration, frame rate and every keyframe), or pick one of the bundled presets listed underneath — loading one that carries keyframes opens the timeline so you can see the animation it brought with it, and Export (⌘E): stills to PNG; videos to H.264/HEVC .mp4, ProRes .mov (with audio), or animated GIF, at your choice of resolution and quality. Scanline detail is brutal on lossy codecs — use the High/Very high quality tiers, or ProRes when it's headed into an edit. Exports are deterministic: same settings + same frame = same pixels.
Scanline banding. CRT shaders draw scanlines in output pixels, so if the export height isn't a whole multiple of the downscale height, one source line covers a fractional number of rows and the scanlines group into visible bands. Exports handle this automatically — they render at a whole multiple and average down — so you ca
项目描述
Vintage analog TV/VHS image tool for macOS: ntsc-rs signal emulation + RetroArch CRT shaders (librashader), glued together with SwiftUI/Metal
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