Aiviel: Local Video Translator
AI Subtitles & Dubbing
Only for Mac
Free · In‑App Purchases
Mac
Translate videos into subtitles and AI dubbing locally. Detect speakers, review assignments, and export precisely timed audio tracks or editing packages.
Aiviel combines speech recognition, subtitle translation, voice management, and dubbing export in one local workflow. Media, subtitles, reference audio, and generated results are processed on this device and are not uploaded.
SUBTITLES
• Use system speech recognition or download Qwen3-ASR 1.7B for high-accuracy long-form recognition with word-level timestamp alignment
• Optionally download the approximately 107 MB Nemotron speaker-detection model to assign cues to up to eight speakers; uncertain cues can be checked against source audio and confirmed manually
• Generate timeline-based subtitles and edit, add, delete, or assign speakers cue by cue
• Translate with the system on-device translation service and switch between source, translated, or bilingual views
• Export SRT, WebVTT, and TXT
LOCAL AI DUBBING
• Use system voices or download IndexTTS-2.5, VoxCPM2, Qwen3-TTS, or VibeVoice local models
• Import authorized reference audio to create reusable AI voices; rename, reorder, and audition saved voices
• Create single- or multi-speaker dubbing with per-speaker voice, model, speed, and supported emotion controls
• Generate all cues in a batch, or play and regenerate individual cues
• Detect generated speech that exceeds its original subtitle duration
PROFESSIONAL EXPORT
• Save results automatically to the app’s default output folder
• Export one full-length track when cues do not overlap
• When cues overlap, automatically create the minimum number of full-length tracks while preserving exact cue start times
• Export a professional editing package with individual cue files, overview tracks, and timeline data
Includes a user-initiated 7-day free trial. The trial is not a subscription and never renews or charges automatically. A one-time purchase permanently unlocks the app.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• New optional on-device speaker detection for up to eight speakers, with a compact model download of about 107 MB.
• Listen to original cue audio and confirm speaker assignments; manually confirmed assignments are preserved.
• Improved handling of brief speaker changes, overlapping speech, and single-channel speaker assignments.
• Projects now save before audio generation and preserve pending edits when switching media or projects.
• Safer regenerated-audio storage protects previously saved results if a save is interrupted.
• Improved cancellation and error handling during Qwen recognition and speaker detection.
• Additional stability and interface improvements.
The developer, Xiaojun Chen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Xiaojun Chen
- Size
- 9 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- Mac
- Languages
English and 2 more
- English, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Access $9.99
- Copyright
- © 2026 Aiviel
