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Jive Visualiser transforms WAV/MP3/FLAC into delightful 720p visuals—bars that breathe with your dialogue, rise with your laughter, and groove through every frequency.\n\n\u003cdiv align=\"center\"\u003e\u003cimg alt=\"Jive Visualiser Demo\" src=\".github/jive-visualiser.gif\" width=\"860\" /\u003e\u003c/div\u003e\n\n### What's Cooking\n\n- 🖼️ **Thumbnail generator** YouTube-style PNG with your title, saved alongside the video\n- 🎬 **1280×720 @ 30fps** H.264/AAC YouTube-ready MP4, no questions asked\n  - 🎚️ **64 frequency bars** that look discrete (not that smeared spectrum nonsense)\n  - 🪞 **Symmetric mirroring** above and below centre, doubles the visual impact\n  - 🔬 **FFT-based analysis** 2048-point Hanning window, linear frequency binning, log-scaled amplitude\n  - ✨ **Spring-driven bar dynamics** bars snap up instantly, spring back down via harmonica peak-hold\n- 🚀 **Stupidly fast** streaming pipeline, parallel RGB→YUV conversion\n  - ⚡ **GPU acceleration** auto-detected: NVENC, Vulkan, VA-API, QuickSync, VideoToolbox\n- 📦 **Single binary** No Python. No FFmpeg install required. Just drop and render\n  - 🐧 **Linux** (amd64 and AArch64)\n  - 🍏 **macOS** (x86 and Apple Silicon)\n\n## Usage\n\n### Generate Video\n```bash\n./jive-visualiser input.wav output.mp4\n```\n\n### With Episode Number and Title\n```bash\n./jive-visualiser --episode=42 --title=\"Linux Matters\" input.wav output.mp4\n```\n\n### Without Episode Number (Unnumbered Audio)\n```bash\n./jive-visualiser --title=\"Linux Matters\" input.wav output.mp4\n```\n\n`--episode` is optional. Omitting it suppresses the episode number overlay entirely — useful for archive or bonus audio that has no episode number. Passing `--episode=0` still renders `00` on-screen (single-digit values are zero-padded, so `5` renders as `05`); absence is what controls the overlay, not the value.\n\n### Example\n\n\u003cdiv align=\"center\"\u003e\n  \u003ca href=\"https://www.youtube.com/watch?v=VPJEQhdaXrk\" target=\"_blank\"\u003e\n    \u003cimg alt=\"Linux Matters: Episode 65 (macOS Made Me Snap)\" src=\".github/thumbnail.png\" width=\"640\"\u003e\n  \u003c/a\u003e\n\u003c/div\u003e\n\n## Build\n\nJive Visualiser uses [FFmpeg statigo](https://github.com/linuxmatters/ffmpeg-statigo) for FFmpeg static bindings.\n\n```bash\n# Setup or update ffmpeg-statigo submodule and library\njust setup\n\n# Build and test\njust build        # Build binary\njust test         # Run tests\njust test-encoder # Test encoder\n```\n\n## Why Jive Visualiser?\n\nFFmpeg's audio visualisation filters (`showfreqs`, `showspectrum`) render continuous frequency spectra, not discrete bars. No amount of FFmpeg filter chain kung-fu can achieve the discrete 64-bar aesthetic required for Linux Matters branding. Solution: Do the FFT analysis and bar rendering in Go, pipe frames to FFmpeg for encoding.\n\n**Why Go over Python?** The original `djfun/audio-visualizer-python` tool is a moribund Qt5 GUI with significant tech debt. For our podcast production needs we wanted multi-architecture tools that can integrate into automation pipelines.\n\nThe Jive Visualiser architecture, such as it is, is available in the [architecture document](docs/ARCHITECTURE.md).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flinuxmatters%2Fjive-visualiser","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flinuxmatters%2Fjive-visualiser","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flinuxmatters%2Fjive-visualiser/lists"}