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Subler is a macOS app created to mux and tag mp4 files. The main features includes:

  • Creation of tx3g subtitles tracks, compatible with all Apple's devices (iPod, AppleTV, iPhone, QuickTime).
  • Mux video, audio, chapters, subtitles and closed captions tracks from mov, mp4 and mkv.
  • Raw formats: H.264 Elementary streams (.h264, .264), AAC (.aac), AC3 (.ac3), Scenarist (.scc), VobSub (.idx).
  • metadata editing and TMDb, TVDB and iTunes Store support.


  • Mac OS X/macOS 10.10 or later

The last version compatible with OS X 10.9 is

The last version compatible with OS X 10.7 is 1.0.9

The last version compatible with OS X 10.6 is 0.31


Download Subler

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Srt File Format

Chapter Text Format

Release Notes

Subtitles Guide


The official channel is on (freenode network), channel #subler . Please be reasonable, this is a free project worked on by one person in his spare time.