This README is the one indexed from the repository at its latest ref, not from the tag for this version.

Fluorite 🎬💎

Next-generation FFMPEG bindings, fluent Crystal DSL, asynchronous streaming process wrapper, smart conversion presets, and full-screen Opal terminal UI.

Fluorite turns complex, arcane ffmpeg and ffprobe command strings into elegant, type-safe, and self-documenting Crystal code. Whether you need a 1-line Discord video compressor that is mathematically guaranteed to fit under upload limits, an interactive full-screen TUI to batch transcode media, a microsecond-accurate real-time progress streamer, or low-level C FFI access, Fluorite delivers the ultimate developer experience.

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✨ Features at a Glance

• Fluent Block & Chainable DSL: Express complex inputs, multi-stream mappings, hardware acceleration, video/audio codecs, and filter graphs naturally in Crystal.
• Microsecond Real-Time Progress Streaming: Non-blocking asynchronous fiber execution with structured progress events (FPS, percentage, speed, dynamic ETA countdown, bitrate, size).
• Smart UX Presets:
  • Discord Bit Budgeting: Automatically measures media duration, calculates total bit allocation ($V + A$), and transcodes video guaranteed to fit under Discord's 10MB/25MB/50MB limits!
  • Crisp 2-Pass GIF: Generates optimum 256-color palettes with Lanczos scaling for non-dithered high-definition GIFs.
  • Web FastStart: Optimizes MP4 containers for instant browser playback by moving the moov atom up front.
  • Instant Stream Copy Trim: Lossless cutting in milliseconds (-c copy) without re-encoding.
  • Audio Extraction: Direct conversion to MP3 (VBR/CBR), Opus, AAC, or lossless FLAC.
  • Hardware Acceleration: Automatic GPU detection and mapping for NVIDIA NVENC (h264_nvenc, hevc_nvenc, av1_nvenc), Intel QSV, AMD AMF, and Apple VideoToolbox.
• Deep Media Probing (Fluorite::Probe): Type-safe parser for ffprobe JSON, providing structured containers, audio/video stream specs, framerates, color spaces, aspect ratios, and tags.
• Interactive Opal Terminal UI (fluorite tui): Full-screen workspace built on sol-vin/opal featuring file browsing, media inspector cards, preset launcher, live Unicode progress gauges, FPS sparklines, and raw command preview.
• CLI & Interactive Wizard (fluorite wizard): Beautiful colorized terminal utilities and step-by-step interactive configuration.
• Low-Level C FFI Bindings (Fluorite::C / LibAV): Native declarations for libavcodec, libavformat, and libavutil.
• Integrated Tooling: Automated commit-based versioning via sol-vin/carbon and multi-track documentation via sol-vin/jasper.

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🚀 Installation

Add fluorite to your shard.yml:

dependencies:
  fluorite:
    github: sol-vin/fluorite
    branch: main

Run shards install.

Requires ffmpeg and ffprobe installed on your system (e.g., via Scoop, Chocolatey, Homebrew, or apt).

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🛠️ Quick Start

1. Fluent Block DSL

require "fluorite"

cmd = Fluorite.build do
  # Global options
  overwrite!
  threads 0

  # Input configuration
  input("gameplay.mkv") do
    seek 10.seconds
    duration 30.seconds
    hwaccel :cuda # or :auto, :qsv, :amf
  end

  # Video options
  video do
    codec :h264
    crf 20
    preset :slow
    scale 1920, 1080
    fps 60
  end

  # Audio options
  audio do
    codec :aac
    bitrate "192k"
    volume 1.2
  end

  # Filter graph
  filter do
    drawtext text: "Recorded with Fluorite", fontsize: 24, fontcolor: "white@0.8", x: 20, y: 20
  end

  # Output destination
  output("highlight.mp4") do
    faststart!
  end
end

# Run with real-time progress callbacks
runner = cmd.run do |p|
  print "\rTranscoding: #{p.percent.round(1)}% | FPS: #{p.fps} | Speed: #{p.speed}x | ETA: #{p.eta_formatted}"
end

puts "\nDone! Saved to highlight.mp4"

2. Chainable Fluent Syntax

require "fluorite"

Fluorite.input("raw.mov")
  .video_codec(:h264)
  .crf(22)
  .scale(1280, 720)
  .audio_codec(:aac)
  .output("encoded.mp4")
  .run

3. Deep Media Inspection (Fluorite::Probe)

info = Fluorite.probe("movie.mkv")

puts "Format:   #{info.format_name}"
puts "Duration: #{info.duration_formatted} (#{info.duration.total_seconds}s)"
puts "Size:     #{info.human_size}"
puts "Video:    #{info.video_summary}" # e.g. "H.264 1920x1080 @ 60.0 fps (yuv420p)"
puts "Audio:    #{info.audio_summary}" # e.g. "AAC 2.0 @ 192 kbps, 48000 Hz"

4. Smart UX Presets

# 1. Discord 25MB Fit (auto bit budgeting)
Fluorite::Presets::Discord.convert("long_recording.mp4", "discord_upload.mp4", target_mb: 25)

# 2. High-Quality 2-Pass Palette GIF
Fluorite::Presets::Gif.convert("clip.mov", "preview.gif", fps: 15, width: 480)

# 3. Web-Optimized FastStart MP4
Fluorite::Presets::Web.convert("source.avi", "streamable.mp4")

# 4. Extract High-Quality Audio
Fluorite::Presets::Audio.extract("concert.mkv", "track.mp3", format: :mp3, bitrate: "320k")

# 5. Millisecond Stream-Copy Trim (no re-encoding!)
Fluorite::Presets::Trim.cut("movie.mp4", "clip.mp4", from: "00:01:30", to: "00:02:15")

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🖥️ Interactive Terminal UI (TUI)

Fluorite includes a full-screen, reactive terminal application powered by Opal:

# Launch full-screen interactive TUI
fluorite tui

TUI Highlights:

• File Browser: Browse media files in the workspace with audio/video extension filtering.
• Inspector Panel: Dynamic cards detailing container format, codecs, resolution, bitrate, and streams.
• Conversion Presets: 1-click presets for Discord, Web MP4, GIF, Audio extraction, and AV1.
• Live Transcode Monitor: Real-time Opal progress gauge, digital speed & FPS telemetry, dynamic ETA countdown, FPS sparkline chart, and scrolling log viewer.
• Command Preview: Press C anywhere to inspect and copy the exact generated ffmpeg command line.

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💻 CLI Commands

Fluorite also acts as a standalone terminal powerhouse:

# Interactive TUI
fluorite tui

# Interactive step-by-step CLI setup wizard
fluorite wizard

# Beautiful colorized media inspection table
fluorite probe video.mp4

# Compress for Discord (10MB / 25MB / 50MB)
fluorite discord video.mp4 --limit 25MB

# Convert to crisp high-definition GIF
fluorite gif animation.mov --fps 15 --width 480

# Ultra-fast lossless cut
fluorite trim video.mp4 --from 00:01:00 --to 00:01:45 -o clip.mp4

# Extract audio track
fluorite audio podcast.mp4 --format opus -o podcast.opus

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📚 Documentation (Jasper)

Fluorite's documentation is compiled via sol-vin/jasper:

# Validate guides
jasper validate

# Compile into Crystal docs
jasper build

# Generate static HTML doc site
crystal docs

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⚡ Versioning (Carbon)

Fluorite uses sol-vin/carbon for automated commit-based versioning:

# Audit repository version health
carbon doctor

# Bump commit version and sync manifests
carbon bump

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📄 License

MIT © Ian Rash (sol-vin)