SubLocal

SubLocal — Offline Subtitle Generator

Generate accurate SRT subtitles for your videos and audio files, entirely on your device. No internet, no upload — transcribe audio offline with on-device AI. Your media never leaves your phone.

Now also: extract audio from any video and export it as an M4A file (video to audio), saved straight to your Music folder.

Key Features:

• Offline AI subtitle generator — no upload, 100% private

• Subtitle maker for video and audio (MP4, MKV, MOV, MP3, WAV and more)

• NEW: Extract audio from video and export as M4A (video to audio)

• Export and share SRT subtitle files

• Real-time subtitle playback with highlighting

• History for all your transcriptions

• Multiple AI models for different languages

Supported Languages:

Chinese, English, Japanese, Korean, Cantonese, French, Spanish, German, Italian, Portuguese, Russian, Greek

How to use:

1. Pick a video or audio file

2. Choose language and AI model

3. Tap Generate — subtitles are created on your device

4. Export SRT subtitles or extract audio, and share

All processing is local. No data is sent to any server. No account required. Free to use.