AI Sub Video Player

Got a video with no subtitles? AI Sub Video Player listens to the dialogue and writes subtitles for it, right on your phone. Nothing you watch is uploaded.

AI SUBTITLES, MADE ON YOUR DEVICE
• Tap "Generate subtitles" on any video with speech.
• Lines appear as they're written, so you can start watching straight away.
• Subtitles are saved, so they're ready the next time you open the video.
• The spoken language is detected automatically, and subtitles are written in that language.
• Speech recognition runs entirely on your phone. Your videos never leave it.

CHOOSE THE SPEECH MODEL THAT SUITS YOUR PHONE
Download one of three Whisper speech models once, then generate subtitles without a connection:
• Whisper Tiny (32 MB): fastest, best with clear speech.
• Whisper Base (60 MB): balanced speed and accuracy, a good default for most phones.
• Whisper Small (190 MB): most accurate, slower on older devices.
Downloads pick up where they left off if your connection drops, and you can delete a model at any time.

A PLAYER THAT STAYS OUT OF THE WAY
• Swipe up or down to change volume and brightness, and sideways to seek.
• Double-tap to skip 10 seconds forward or back.
• Playback speed from 0.5× to 2×.
• Fit, Fill or Stretch the picture to your screen.
• Choose subtitle tracks already inside the video.
• Dark by design, for watching in dim rooms. The screen stays on while you watch.

YOUR VIDEOS, ORGANISED BY FOLDER
• Add the folders where you keep videos. Every video inside them, subfolders included, shows up in your library.
• New videos appear the next time you open a folder.
• Or open a single video file whenever you like.
• Removing a folder from the library never deletes anything from your phone.

Subtitle accuracy depends on the audio: clear dialogue gives the best results, while heavy music, background noise or strong accents can cause mistakes.

Screenshots show footage from "Tears of Steel" © Blender Foundation | mango.blender.org, licensed under CC BY 3.0.