iSubtitle 3.4.6 Portable for macOS {Apple M1 + Big Sur}

by shaheen ismail · January 8, 2026

iSubtitle 3.4.6 Portable for macOS {Apple M1 + Big Sur}

iSubtitle 3.4.6 Portable for macOS {Apple M1 + Big Sur} lets you create soft-subtitled movies for iPod, iPhone, iPad, Apple TV, iTunes, or any AVFoundation/QuickTime-based player or app. It’s the first and only application to take full advantage of Apple’s soft subtitle technology. The subtitle tracks are resolution-independent and rendered in real-time as you watch the movie. Subtitles are always displayed at the best quality your device can perform.

Add soft, non-destructive subtitles, that won’t change or alter the original movie.
Subtitles can be turned on/off using the interface of the device or application.
Complete support for multiple languages in the same file.
Supported devices are iPod, iPhone, iPad, and Apple TV.
Supported applications are iTunes, QuickTime Player, or any app that can play a
AVFoundation/QuickTime Movie.
Built-in subtitle online search with automatic download, unarchive and parsing.
Supports all major subtitle file formats like SubRip (.srt), SubViewer 1 and 2 (.sub),
SubStation Alpha (.ssa/.ass), Spruce (.stl), Scenarist (.scc) and iTunes Timed Text (.itt).
Matroska subtitles, like ssa/ass and srt, are automatically converted to soft subtitle tracks on import.
Sync subtitles in real-time using the time offset stepper.
Automatic and manual metadata tagging.
Create chapter markers automatically or manually.
Batch re-encode movies within the application to support your target device or application.
Watch subtitled movies on fullscreen without leaving the application.
Works perfectly with 10.9 Mavericks.
Please install Perian from http://goo.gl/cXtDPW to support more input formats like MKV and AVI.
If you are having issues using iSubtitle, we want to help. Please contact us!