Offline Subtitle Studio AI - 100% offline AI subtitles for any video or audio — generate, edit, style, export to SRT/VTT/TXT/ASS, or burn in. Your media never leaves your PC. Offline Subtitle Studio AI turns your videos and audio into clean, editable subtitles using on-device AI speech recognition powered by faster-whisper. Everything runs locally on your PC, so your files stay private. Drag in a file, generate captions, fine-tune timing and text in an editable cue table, apply ASS style presets, then export to SRT, VTT, TXT, or styled ASS — save a sidecar file that loads automatically in players like VLC, embed a subtitle track, or burn styled subtitles into a new video (your original is never modified). A compact model is bundled for fully offline first use; optional larger models (Base, Small, Medium, Large-v2) download once from Hugging Face, then run offline. CPU by default with optional NVIDIA GPU (CUDA) acceleration. One-time purchase — no subscription, no ads, no account. - Offline AI transcription via faster-whisper (CTranslate2) — media never leaves your PC - Bundled compact model works offline on first launch; larger models optional, one-time download - CPU by default with optional NVIDIA GPU (CUDA) acceleration - Word-level “Precise” timing for tight, natural cue breaks - Editable cue table plus batch queue for multiple files - ASS styling presets — font, size, color, outline, position via Style Manager - Export to SRT, VTT, TXT, ASS — sidecar, embedded track, or burn-in to a new video - One-time purchase — no subscription, no ads, no account, no telemetry Offline AI Subtitle Generation Create subtitles from video or audio files using local speech recognition on your Windows PC. Private Local Processing Your videos, audio files, transcripts, and subtitles stay on your computer. Editable Subtitle Timeline Review generated cues, adjust start and end times, edit text, and clean up captions before export. Export to Popular Subtitle Formats Save subtitles as SRT, VTT, TXT, or ASS for editing, sharing, archiving, or use in video players and editors. Styled Subtitles with ASS Create subtitle styles with font, size, color, outline, position, and formatting presets. Burn Subtitles Into Video Render styled subtitles permanently into a new video file while keeping the original file unchanged. Embed Subtitle Tracks Add selectable subtitle tracks to compatible video files for a cleaner viewing workflow. Batch Processing Queue multiple audio or video files and generate subtitles in sequence. Works with Common Media Files Supports popular video and audio formats such as MP4, MKV, MOV, AVI, MP3, WAV, and M4A. One-Time Purchase No subscription, no ads, no account, and no recurring fees. Perfect for - YouTube creators - Video editors - Podcasters - Course creators - Agencies and freelancers - Accessibility captioning - Social media creators - Privacy-conscious professionals - Anyone who needs offline subtitles on Windows Release Notes System Requirements Windows 10/11 (build 17763+)