Subtitle Editor is a GTK+2 tool to edit subtitles for GNU/Linux/*BSD. It can be used for new subtitles or as a tool to transform, edit, correct and refine existing subtitle. This program also shows sound waves, which makes it easier to synchronise subtitles to voices.

Subtitle Editor is free software released under the GNU General Public License (GPL3).

Features
User interface:
    * Really easy to use
    * Multiple document interface
    * Undo/Redo
    * Internationalization support
    * Video player integrated in the main window (based on GStreamer)
    * Can play preview with external video player (using MPlayer or other)
    * Can be used for timing
    * Generate and display a Waveform
    * Can be used for translating
    * Shows subtitles over the video
    * With GTK+, menu accelerators can be changed by pressing a key over the menu item. This is possible with subtitleeditor, and this is for this reason that all actions are in the menu.

Editing:
    * Can edit the script header (authors, translators, timers, video informations, etc.)
    * Style Editor
    * Spell checking
    * Framerate convertion
    * Scale
    * Split and joint subtitle
    * Edit text and adjust time (start, end)
    * Move subtitle
    * Find and replace (can use Regular Expression)
    * Errors checking (Overlapping, too long time...)
    * Remove line empty

Supported formats:
    * Sub Station Alpha
    * Advanced Sub Station Alpha
    * SubRip
    * MicroDVD
    * MPL2
    * MPsub (MPlayer subtitle)
    * SubViewer 2.0
    * Plain-Text
    * Adobe Encore DVD

Other features:

    * Encoding support
    * Internal format is Advanced Sub Station Alpha

The newest Ubuntu PPA build in https://launchpad.net/~nilarimogard