Subler is an Mac OS X app created to mux mp4 files. The main features are:
- 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)
- iTunes metadata editing and tagChimp support.