EchoStream: AI Subtitles & Dub
Sahaj Systems Video Players & Editors
AI video player, automatic subtitle generator, and dubbing studio 100% offline.
- Downloads
- 21+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Sep 13
- 2026 Β· v1.0.3
Screenshots
About EchoStream: AI Subtitles & Dub
EchoStream Player is a modern, offline-first AI video player, subtitle generator, and dubbing studio. Watch your favorite movies, series, and local videos with automated on-device subtitle generation, instant multi-language subtitle translation, and studio-grade AI audio dubbing.
Enjoy crystal-clear playback with zero cloud uploads β all speech recognition, subtitle translation, and AI audio dubbing run 100% locally on your device for absolute privacy.
π KEY FEATURES
π¬ Advanced Media Playback & Gesture Controls:
β’ Hardware-accelerated video playback supporting MP4, MKV, AVI, MOV, WebM, and FLV.
β’ Intuitive gesture controls: smooth vertical swipe for brightness and volume, double-tap seek (10s), pinch-to-zoom aspect ratio switching, and variable speed control (0.25x to 3.0x).
β’ Multi-track audio switcher for seamless audio track switching.
β’ Background playback and picture-in-picture (PiP) support.
ποΈ AI Video Dubbing Studio & Audio Translation:
β’ Studio-grade on-device AI voice dubbing for your favorite videos.
β’ Re-dub dialogue into different languages while preserving natural timing.
β’ Manage and switch between generated dubbed audio tracks directly inside the player.
π€ On-Device AI Subtitle Generator & Translator:
β’ Auto-generate timestamped subtitles and closed captions (CC) for any local video β completely offline.
β’ Instant subtitle translation for language learning across multiple international languages.
β’ On-device Whisper AI speech recognition for maximum transcription accuracy.
β’ Dual subtitle display: view original and translated subtitles simultaneously.
π¨ Subtitle Studio:
β’ Fine-tune subtitle sync with manual timecode audio-delay adjustments (+/- ms).
β’ Load external subtitles (SRT, VTT, ASS) or export generated subtitles to SRT and WebVTT.
π Smart Local Video Library:
β’ Automatic local video scanner β browse and play MP4, MKV, AVI, MOV videos from your device storage.
π 100% Private & Offline AI Video Player:
Your media never leaves your phone. All AI speech-to-text models, neural translation, and dubbing execute locally on your device hardware with zero data collection, zero tracking, and zero cloud dependencies.
Experience the future of media playback with EchoStream Player β the private offline AI video player, subtitle translator, and dubbing studio.
Enjoy crystal-clear playback with zero cloud uploads β all speech recognition, subtitle translation, and AI audio dubbing run 100% locally on your device for absolute privacy.
π KEY FEATURES
π¬ Advanced Media Playback & Gesture Controls:
β’ Hardware-accelerated video playback supporting MP4, MKV, AVI, MOV, WebM, and FLV.
β’ Intuitive gesture controls: smooth vertical swipe for brightness and volume, double-tap seek (10s), pinch-to-zoom aspect ratio switching, and variable speed control (0.25x to 3.0x).
β’ Multi-track audio switcher for seamless audio track switching.
β’ Background playback and picture-in-picture (PiP) support.
ποΈ AI Video Dubbing Studio & Audio Translation:
β’ Studio-grade on-device AI voice dubbing for your favorite videos.
β’ Re-dub dialogue into different languages while preserving natural timing.
β’ Manage and switch between generated dubbed audio tracks directly inside the player.
π€ On-Device AI Subtitle Generator & Translator:
β’ Auto-generate timestamped subtitles and closed captions (CC) for any local video β completely offline.
β’ Instant subtitle translation for language learning across multiple international languages.
β’ On-device Whisper AI speech recognition for maximum transcription accuracy.
β’ Dual subtitle display: view original and translated subtitles simultaneously.
π¨ Subtitle Studio:
β’ Fine-tune subtitle sync with manual timecode audio-delay adjustments (+/- ms).
β’ Load external subtitles (SRT, VTT, ASS) or export generated subtitles to SRT and WebVTT.
π Smart Local Video Library:
β’ Automatic local video scanner β browse and play MP4, MKV, AVI, MOV videos from your device storage.
π 100% Private & Offline AI Video Player:
Your media never leaves your phone. All AI speech-to-text models, neural translation, and dubbing execute locally on your device hardware with zero data collection, zero tracking, and zero cloud dependencies.
Experience the future of media playback with EchoStream Player β the private offline AI video player, subtitle translator, and dubbing studio.
What’s new
Version 1.0.3 Β· Updated September 13, 2026
- Full compliance and support for Android 16 (Target SDK 36) and 16 KB memory page size architecture. - High-accuracy offline neural speech recognition and real-time multi-language AI video dubbing. - Performance enhancements, faster app launch, and improved subtitle synchronization.
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