Video Translator - Sub AI
Subtitles & Captions Generator
Free · In‑App Purchases
Sub AI – Translate, Play & Customize Videos Like Never Before
Stop hunting for subtitles. Sub AI lets you translate any video instantly, or use your own SRT files. Perfect for movies, TV shows, courses, or online videos.
Key Features:
• AI-Powered Subtitles: Translate any video into your preferred language in seconds.
• Custom Subtitles: Highlight text on video frames, adjust timing, and style your subtitles.
• Smart Playlists: Group related videos, track progress, and continue watching exactly where you left off.
• Best Video Player: Smooth playback, customizable controls, and audio boost options.
• Export & Share: Save fully translated videos or generate SRT files compatible with any player.
Sub AI is designed for anyone who watches videos in multiple languages, learns with video content, or wants total control over subtitles. Say goodbye to syncing headaches and lost episodes.
Experience Sub AI – The ultimate video translation and subtitle solution.
more Developer Response Thank you so much :)We're glad you're enjoying the app.
⭐️⭐️⭐️⭐️🌟
Thank you so much :)We're glad you're enjoying the app.
Developer Response شكراً جزيلاً على التقييم الجميل
ممتاز جداّ
شكراً جزيلاً على التقييم الجميل
الفكرة رهيبه بس مدري أنا مااعرف استخدمه ولا فيه مشكلة بشوف بحدثه المهم مشكلته احط من لغة إلى عربي ويترجمه للإنجليزي، لو تخليه مجاني كامل والله بيصير تطبيق جبار ومعتمد والله مرتب بشكل ررهيييب
الفكرة رهيبه بس مدري أنا مااعرف استخدمه ولا فيه مشكلة بشوف بحدثه المهم مشكلته احط من لغة إلى عربي ويترجمه للإنجليزي، لو تخليه مجاني كامل والله بيصير تطبيق جبار ومعتمد والله مرتب بشكل ررهيييب
- Bug fixes.
4.1.2 Mar 31
- Bug fixes.
4.1.1 Mar 27
This update brings major performance upgrades and powerful new customization features to improve your experience.
• Faster document processing
We’ve made significant improvements to the Sub AI library. Documents now load quicker, and translations feel smoother and more responsive from start to finish.
• New subtitle styles for video exports
You can now export videos with styled subtitles. Choose from clean background options like black, white, or a modern frosted look to match your content.
• Smoother, more refined interface
We’ve polished the app’s UI to make everything feel faster, cleaner, and easier to use.
• Bug fixes & stability improvements
We’ve fixed several issues to make the app more reliable.
4.1 Mar 25
We’ve made Sub AI smarter, faster, and more powerful than ever! This update introduces the all-new Sub AI Library and expands your document translation and reading experience.
Sub AI Library: Your personal hub for all translated documents. Now you can:
• Translate unlimited PDFs, manga, comics, and scanned files.
• Continue reading exactly where you left off, never lose your place.
• Use AI-powered document tools to summarize, explain, and better understand every page.
• Enjoy a clean, distraction-free reading interface with smooth navigation and modern design.
• Organize all your documents in one place, making it easy to find, review, and share them.
General Enhancements
• Optimized performance for smoother transcription and reading experience.
Sub AI now feels faster and smoother than ever! We’ve optimized the app so it starts working immediately. Your translations and subtitles now load much faster than before.
4.0 Mar 24
- Re-translation bugs were fixed: After uploading a video and translating it to your preferred language, you can now re-translate it to other languages as you wish.
3.2.5 Feb 18
- Bug fixes.
3.2.3 Jan 26
- Bug fixes.
- Performance Improvements.
- 3 more fonts.
3.2.2 Jan 22
- Bug fixes.
3.2.1 Jan 21
• Edit AI-generated subtitles before exporting your video
• Update both transcription and translation with full control
• More fonts added for better customization
• Improved subtitle visibility with text outlines
• Performance improvements and bug fixes
3.2 Jan 19
• Added support for Chinese (Simplified) -> one of the most requested languages.
• General bug fixes and stability improvements.
3.1.2 Jan 14
• The video player now shows the video title, so you always know exactly what you’re watching.
• When watching a video from a playlist, you can now open the full playlist directly from the player and jump to any video without leaving playback. Watching the next episode is now instant.
• Various bug fixes and small improvements for a smoother experience.
3.1 Jan 7
• Enhanced volume control: Adjust your system-wide volume and apply additional audio boost. Even at 100%, you can slide up for extra power.
• UI polish: Small tweaks for a cleaner, more intuitive interface.
• Offline subscriptions fixed: You no longer need to be online to detect your active subscriptions.
• Side menu improvements: The Models Management screen now appears correctly.
• Dynamic text fixes: Large fonts now display correctly throughout the app, improving readability for everyone.
3.0.3 12/26/2025
- UI/UX polish.
- Bug fixes.
3.0.2 12/21/2025
iPad version layout bug fixes.
3.0.1 12/20/2025
- Fresh UI Polish
Subtle but meaningful UI improvements throughout the app for a cleaner, smoother, and more modern feel.
- Introducing Playlists
Perfect for TV shows, courses, and multi-part content. You can now group related videos into playlists and keep everything organized in one place.
- Clean, Customizable Playlists
Playlists are neatly organized, easy to manage, and fully customizable to fit how you watch.
- Progress Tracking Built In
Your watch progress is automatically tracked per playlist, so you always know where you left off.
- Smart Continue Watching
Each playlist includes an intelligent action button:
• Continue Watching if you haven’t finished your last video
• Play Next if you’ve completed it
- Massive Performance Boost
Loading large videos is now up to 4× faster. Long videos open smoothly and reliably, with significantly reduced memory pressure and wait times.
- Instant Translation Start
The delay between tapping Translate and seeing results is gone. Translations now begin immediately, making the whole experience feel far more responsive.
- Improved Sharing Reliability
Fixed multiple bugs related to importing and sharing videos from outside the app. Sharing now works more consistently across formats and sources.
& As always ... thank you for using Sub AI.
3.0 12/19/2025
- Bug fixes.
2.7.1 12/03/2025
This update brings powerful new controls to make your viewing experience even smoother:
• Swipe to Adjust Brightness & Volume
Slide your finger up or down on the right side of the screen to adjust brightness instantly.
Slide on the left side to control volume boost with precision.
• Landscape Orientation Locks
You can now lock rotation to Landscape Left or Landscape Right for a more comfortable viewing experience.
• Performance Improvements & Fixes
We’ve cleaned up a few bugs and made the app feel faster and more responsive.
2.7 12/01/2025
- Bug Fixes.
2.6.1 11/27/2025
• Sub AI now supports Arabic localization for a smoother, native experience.
• We fixed several bugs to make everything feel more reliable.
• General performance improvements for faster, smoother translations.
2.6 11/25/2025
Get ready! Sub AI just got much faster and way more flexible.
Ultra-Fast AI Translation (Under 30 Seconds!)
No matter how long your video is (5 minutes or 2 hours) Sub AI now generates AI subtitles in under 30 seconds. Yes, really.
Smarter On-Screen Text Translation
Frame text translation is now fully customizable.
You can translate text on video frames between any languages you choose, instead of being limited to the video’s original audio language.
Smoother, Polished, More Reliable
We fixed a ton of bugs, improved stability across the app, and added subtle UI refinements for a cleaner, more fluid experience.
2.5 11/22/2025
- Bug fixes.
2.4.1 11/13/2025
We packed v2.4 with subtitle features and quality-of-life updates — everything to make translating and watching videos smoother, faster, and more reliable.
Subtitle files (SRT) — import & use
• You can now load .srt subtitle files directly into Sub AI. Drop an SRT into a video and Sub AI will display it exactly as authored — no manual copy/paste, no fuss.
• The app recognizes standard timestamps and preserves the original timing and formatting.
Three subtitle modes — pick what fits
• Pick between three clean modes:
1. AI Translate — use Sub AI to translate the video’s speech into your chosen language.
2. Use SRT File — display an imported SRT (perfect when you already have subtitles).
3. No Subtitles — pure video playback for those who just want to watch.
• Switching is instantaneous and the UI remembers your choice per video so you don’t have to reconfigure every time.
Subtitle time offset (±5 minutes)
• Fine tune subtitle timing with the new offset control. Move subtitles forward or backward up to ±5 minutes to fix syncing issues from different sources.
• The control is precise and fast — ideal for matching subtitles from external files or edge-case encodings.
Live preview while adjusting offsets
• No more guesswork: when you tweak the time offset you’ll see a live video preview that updates as you change the value. Adjust once, confirm instantly — no closing/opening the controller to check results.
Watch history — persistent, sensible, useful
• Your watch history now stores everything that matters: the AI-generated subtitles, uploaded SRT files, and the subtitle mode you selected.
• Resume where you left off with all settings preserved — translations, SRTs, offset, and mode — so you can pick up playback without redoing anything.
Export SRT for your AI translations
• Translate in-app and export the results as a standard .srt file. Those SRTs are compatible with common video players and subtitle tools — perfect for sharing, publishing, or archiving.
• File names are generated cleanly to help you manage exports (e.g., MyVideo – Sub AI Subtitles.srt).
Subtle — but meaningful — UI/UX polish
• We smoothed animations, reduced visual clutter in the player, and tuned the controls so everything feels lighter and more responsive.
• Small improvements across the app to make translation workflows faster and less distracting.
2.4 11/01/2025
We’ve been working hard to make Sub AI even more powerful and user-friendly! Here’s what’s new:
• Export & Share Translated Videos: Now you can export your translated videos directly from the app. Customize your exports to fit your needs and share them seamlessly with friends, colleagues, or on social media. (This is a great feature for content creators)
• Export Subtitles Your Way: You can export subtitles with or without translations, and choose whether to include timestamps. Perfect for creators, language learners, or anyone who wants to save and reuse subtitles efficiently.
• Improved Sentence Segmentation: Translations are now more accurate and readable thanks to smarter sentence splitting. Subtitles flow naturally, even with complex or long video content.
• Continue Watching Widget: Pick up right where you left off with our new widget, available in small, medium, and large sizes. See your recent videos at a glance and quickly resume playback without opening the app.
• UI & Performance Enhancements: Smoother animations, improved responsiveness, and a more polished look throughout the app make your experience more enjoyable than ever.
• Bug Fixes: Subtitles config menu is now updated and previous bugs are no longer an issue.
2.3 10/22/2025
- Bug fixes.
more Version 4.1.2 Mar 31
Data Not Collected The developer does not collect any data from this app.
Supported Features
Larger Text
Dark Interface
Captions