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TalkEdit/FEATURES.md

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# TalkEdit — Feature Roadmap
Features are grouped by priority. Check off items as they are implemented.
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## 🔴 Highest Impact Next — Conversion and retention
- [x] [#015] **Word text correction** — double-click any word to edit its text in-place. Preserves timing and confidence. Pure frontend state change. (2026-05-04)
- [x] [#013] **Re-transcribe selection** — select any word range in the transcript and click "Re-transcribe" to re-run Whisper on just that segment. Backend extracts audio via FFmpeg, transcribes with offset-adjusted timestamps. (2026-05-04)
- [x] [#012] **Low-confidence word highlighting** — words with `confidence < 0.6` (configurable in Settings) get an orange dotted underline. Hover shows exact confidence %. (2026-05-04)
- [x] [#018] **Audio normalization / loudness targeting** — Integrated checkbox in Export panel with LUFS target selector (-14 YouTube, -16 Spotify, -23 Broadcast). Applied during export via FFmpeg `loudnorm` in the audio filter chain. No intermediate files. (2026-05-04)
- [x] [#024] **Export to transcript text / SRT only** — "Export Transcript Only" section in Export panel with format selector (plain text or SRT). Uses `POST /export/transcript` backend endpoint. Respects word cuts. (2026-05-04)
- [x] [#023] **Batch silence removal** — full-file scan + remove all pauses above threshold in one click. Implemented by `SilenceTrimmerPanel` + `POST /audio/detect-silence` (FFmpeg silencedetect).
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## 🟡 Medium Impact — Workflow completeness
- [x] [#016] **Named timeline markers** — colored marker pins on the waveform canvas. Add at current playback position with label/color picker in Markers panel. Editable labels, deletable. Persisted in project file. (2026-05-04)
- [x] [#017] **Chapters** — sorted markers auto-form chapters. "Copy as YouTube timestamps" button exports `MM:SS Label` format to clipboard. (2026-05-04)
- [x] [#041] **Customizable hotkeys / keymap editor** — two presets (Standard: J/K/L/I/O/arrows; Left-hand: Q/W/E/A/S/D/F). Settings panel shows all bindings with click-to-remap, conflict detection, per-key reset to default. Cheatsheet (press `?`) shows current bindings. (2026-05-04)
- [x] [#022] **Clip thumbnail strip** — frontend-side canvas capture from the `<video>` element. Toggle "Thumbnails" button above waveform. Extracts frames at 10s intervals, clickable to seek. Zero backend dependency. (2026-05-04)
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## 🟢 Lower Impact — Expansion and advanced scope
- [x] [#020] **Video zoom / punch-in** — scale and position the video (crop, zoom, pan). Used constantly on talking-head videos for emphasis. Backend: FFmpeg crop/scale post-process. Frontend: sliders in Export dialog. (2026-05-05)
- [x] [#021] **Multi-clip / append** — load additional video clips via Append Clip panel and concatenate during export. Uses FFmpeg concat demuxer. (2026-05-05)
- [x] [#019] **Background music track** — a second audio track for background music with volume ducking. Uses FFmpeg amix + sidechaincompress for auto-ducking. Configurable in Background Music panel. (2026-05-05)
- [ ] [#014] **Optional VibeVoice-ASR-HF transcription backend (future)** — evaluate as an alternate transcription mode for long-form, speaker-attributed transcripts. Keep WhisperX as the default for word-level timestamp editing.
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## ✅ Completed high-impact foundation
- [x] [#001] **Cut / Mute sections**
- [x] [#002] **Silence / pause trimmer**
- [x] [#003] **Operation-level undo for batch actions**
- [x] [#004] **Grouped silence-trim zones (editable batch)**
- [x] [#005] **Edit silence-trim group settings after apply**
- [x] [#006] **Volume / gain control**
- [x] [#007] **Speed adjustment (4th zone type)**
- [x] [#008] **Cut preview**
- [x] [#009] **Timeline shows output length**
- [x] [#010] **Transcript search (Ctrl+F)**
- [x] [#011] **Mark In / Out + delete (I / O keys)**
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- [x] [#042] **Background removal** — MediaPipe Selfie Segmentation + FFmpeg frame processing for person/background separation. Configurable replacement: blur, solid color, or custom image. Applied during export. Falls back to FFmpeg colorkey when MediaPipe unavailable. (2026-05-05)
## 💡 TalkEdit competitive advantages to lean into
These aren't features to build — they're things to make more visible in the UI and README:
- **100% offline / no account required** — CapCut requires login and sends data to servers. Descript is cloud-first. TalkEdit never leaves the machine.
- **Local AI models** — Ollama support means no API costs and no data leaving the device.
- **Word-level precision** — editing by deleting words (not dragging razor cuts) is faster for talking-head content than any timeline-based editor.
- **Works on long files** — virtualized transcript + chunked waveform handles 1hr+ content that bogs down CapCut.
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## ✅ Already Implemented
- [#025] Word-level transcript editing (select, drag, shift-click, delete)
- [#026] Ctrl+click word → seek timeline to that position
- [#027] Waveform timeline with zoom (Ctrl+scroll), scroll, drag-to-scrub playhead
- [#028] Auto-scroll waveform when playhead goes off-screen
- [#029] AI filler word detection and removal (Ollama / OpenAI / Claude)
- [#030] AI clip suggestions for social media
- [#031] Noise reduction (DeepFilterNet or FFmpeg ANLMDN)
- [#032] Export: fast stream-copy or full reencode (MP4/MOV/WebM/WAV, 720p/1080p/4K). WAV available for audio-only inputs.
- [#033] Captions: SRT, VTT, ASS burn-in with font/color/position options
- [#034] Speaker diarization
- [#035] Project save / load (.aive JSON format)
- [#036] Undo / redo (100-level history via Zundo)
- [#037] Multi-format input (MP4, MKV, MOV, AVI, WebM, M4A)
- [#038] Keyboard shortcuts (Space, J/K/L, arrows, Ctrl+Z/Shift+Z, Ctrl+S, Ctrl+E)
- [#039] Settings panel: AI provider config (Ollama, OpenAI, Claude)
- [#040] Cut/mute range creation on timeline with draggable zone edits and Delete-to-remove