Added features: local transcription, multi-language support, preview, customizable styles

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  lint-and-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust lint
+        working-directory: rust
+        run: cargo clippy
+
+      - name: Rust build check
+        working-directory: rust
+        run: cargo build --release
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
+      - name: Install Electron dependencies
+        working-directory: electron
+        run: bun install --frozen-lockfile
+
+      - name: Lint Electron app
+        working-directory: electron
+        run: bun run lint
+
+      - name: TypeScript check
+        working-directory: electron
+        run: bunx tsc --noEmit
+
+      - name: Build Electron app
+        working-directory: electron
+        run: bun run vite:build:app

.github/workflows/release.yml

@@ -0,0 +1,115 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            rust_target: aarch64-apple-darwin
+            electron_args: --mac --arm64
+            artifact_name: mac-arm64
+          - os: macos-latest
+            rust_target: x86_64-apple-darwin
+            electron_args: --mac --x64
+            artifact_name: mac-x64
+          - os: windows-latest
+            rust_target: x86_64-pc-windows-msvc
+            electron_args: --win --x64
+            artifact_name: win-x64
+          - os: ubuntu-latest
+            rust_target: x86_64-unknown-linux-gnu
+            electron_args: --linux --x64
+            artifact_name: linux-x64
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.rust_target }}
+
+      - name: Build Rust core
+        working-directory: rust
+        run: cargo build --release --target ${{ matrix.rust_target }}
+
+      - name: Copy Rust binary (Unix)
+        if: runner.os != 'Windows'
+        run: cp rust/target/${{ matrix.rust_target }}/release/core rust/target/release/core
+
+      - name: Copy Rust binary (Windows)
+        if: runner.os == 'Windows'
+        run: |
+          New-Item -ItemType Directory -Force -Path rust/target/release
+          Copy-Item rust/target/${{ matrix.rust_target }}/release/core.exe rust/target/release/core.exe
+
+      - name: Download platform binaries
+        run: bash scripts/download-binaries.sh
+        env:
+          TARGET_OS: ${{ runner.os }}
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies
+        working-directory: electron
+        run: bun install
+
+      - name: Build Electron app
+        working-directory: electron
+        run: bun run vite:build:app
+
+      - name: Package for distribution
+        working-directory: electron
+        run: bunx electron-builder ${{ matrix.electron_args }} --publish never
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CSC_IDENTITY_AUTO_DISCOVERY: false
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: capslap-${{ matrix.artifact_name }}
+          path: |
+            electron/dist/*.dmg
+            electron/dist/*.exe
+            electron/dist/*.AppImage
+            electron/dist/*.deb
+            electron/dist/*.snap
+          if-no-files-found: ignore
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          merge-multiple: true
+
+      - name: List artifacts
+        run: find artifacts -type f | head -20
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: artifacts/*
+          generate_release_notes: true
+          draft: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -5,5 +5,30 @@ rust/models/*.bin
 
 rust/bin/ffmpeg
 rust/bin/ffprobe
+rust/bin/whisper-cli*
+rust/bin/lib/
+rust/bin-win/
+rust/bin-linux/
 .DS_Store
-rust/bin/lib/libinternal/cmake/
+rust/bin/lib/libinternal/cmake/
+rust/deps/
+rust/target/
+rust/bin/test_input.mp4
+rust/bin/lib/libinternal/libggml-base.0.9.4-dirty.dylib
+rust/bin/lib/libinternal/libggml-blas.0.9.4-dirty.dylib
+rust/bin/lib/libinternal/libggml-cpu.0.9.4-dirty.dylib
+rust/bin/lib/libinternal/libggml-metal.0.9.4-dirty.dylib
+rust/bin/lib/libinternal/libggml.0.9.4-dirty.dylib
+rust/bin/lib/libinternal/*.dirty.dylib
+rust/bin/lib/libinternal/*.0.dylib
+rust/bin/lib/libinternal/*.coreml.dylib
+rust/bin/lib/libinternal/*.1.8.2.dylib
+*.dirty.dylib
+*.0.dylib
+*.coreml.dylib
+*.1.8.2.dylib
+electron/out/
+electron/dist/
+node_modules/
+electron/package-lock.json
+rust/check_output.txt

README.md

@@ -1,9 +1,30 @@
 # CapSlap - AI Video Caption Generator
 
-Automatically generate and burn captions into videos using AI transcription.
-
-<img width="1200" height="800" alt="CleanShot 2025-10-25 at 13 28 49@2x" src="https://github.com/user-attachments/assets/58b2db2a-e2dd-433a-bf2e-5d8c19efad93" />
-
+Automatically generate and burn captions into videos using AI transcription. **Works 100% offline** with local Whisper models.
+
+![CapSlap Screenshot](screenshot.png)
+
+## ✨ Features
+
+- **🔒 100% Local/Offline** - All transcription runs locally using whisper.cpp. No cloud API required, your video never leaves your machine
+- **👁️ Live Preview** - See exactly how your captions will look before exporting with real-time preview
+- **🎨 30+ Custom Fonts** - Choose from a curated library organized by style:
+  - **Modern / Sans** - Montserrat, Roboto, Open Sans, Lato, Raleway, Kanit, Poppins, WorkSans
+  - **Display / Impact** - THEBOLDFONT, Bebas Neue, Anton, Lilita One, Oswald, Bangers
+  - **Fun / Comic** - Komika Axis, Comic Neue, Fredoka, Chewy, Luckiest Guy
+  - **Serif / Elegant** - Playfair Display, Merriweather, Lora, Cinzel, Bodoni Moda
+  - **Handwritten / Script** - Permanent Marker, Patrick Hand, Amatic SC, Caveat Brush, Pacifico
+- **📐 Adjustable Font Size** - Fine-tune caption size to fit your video style
+- **🎬 Caption Templates** - Pre-built styles: Oneliner, Karaoke, Vibrant, Storyteller
+- **🎯 Word-Level Timing** - Karaoke-style highlighting with precise word synchronization
+- **📱 Export Formats** - 9:16 (TikTok/Reels), 16:9 (YouTube), 1:1 (Instagram), 4:5 (Feed posts)
+- **🎥 Wide Format Support** - Works with MP4, MOV, WebM, AVI, WMV, FLV, MKV, MPEG, 3GP, and more
+- **✏️ Caption Editor** - Full control over your captions before exporting:
+  - Edit transcribed text with live preview
+  - Shift words between segments to fix line breaks
+  - View and adjust word-level timing
+  - Double-click any segment to edit text directly
+- **🌍 Multilingual** - Transcribe in 99+ languages including English, Spanish, French, German, Finnish, Japanese, and more
 
 ## Prerequisites
 
@@ -43,9 +64,9 @@ Automatically generate and burn captions into videos using AI transcription.
    bun run dev
    ```
 
-## Whisper Models
+## Whisper Models (Local Transcription)
 
-Local whisper models can be downloaded directly through the app UI, or manually:
+All transcription runs **100% locally** using whisper.cpp. Download models directly through the app UI, or manually:
 
 ```bash
 mkdir -p rust/models
@@ -54,12 +75,30 @@ mkdir -p rust/models
 curl -L https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-tiny.bin \
   -o rust/models/ggml-tiny.bin
 
-# Base model (recommended, 142 MB)
+# Large v3 Turbo ⭐ RECOMMENDED (best speed/accuracy balance, 809 MB)
+curl -L https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-large-v3-turbo.bin \
+  -o rust/models/ggml-large-v3-turbo.bin
+
+# Base model (lightweight, 142 MB)
 curl -L https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-base.bin \
   -o rust/models/ggml-base.bin
+
+# Small model (466 MB)
+curl -L https://huggingface.co/ggerganov/whisper.cpp/resolve/main/ggml-small.bin \
+  -o rust/models/ggml-small.bin
+```
+
+**No API key required!** OpenAI API is available as an optional fallback if you prefer cloud transcription.
+
+## Adding More Fonts
+
+Additional fonts can be downloaded using the included script:
+
+```bash
+./scripts/download_fonts.sh
 ```
 
-Alternatively, use OpenAI API (requires API key) without downloading models.
+This downloads fonts from Google Fonts to `rust/src/fonts/`.
 
 ## Platform-Specific Notes