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Gaupol is an editor for text-based subtitle files.

The aim is to make a simple, but powerful, subtitle editor for multiple subtitle formats. Currently, Gaupol is useful for converting between different formats, translating and manual editing.

It supports multiple subtitle file formats and provides ways of text corrections and time manipulations to match video.

The user interface is designed with attention to batch processing of multiple documents and convenience of translating.

 Gaupol 0.27

Free to download



Osmo Salomaa


System Requirements
Python 3.2 or greater
PyGObject 3.0.0

Gstreamer 1.0 or higher
PyEnchant 1.4.0 or higher
Universal Encoding Detector
MPlayer  or VLC

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Selected Reviews:

Features include:

User Interface
  • Multiple document interface allowing some amount of batch processing
  • GNOME HIG 2.0 compliant user interface
  • Time and frame modes for editing
  • Line lengths optionally shown on all text elements in either ems or characters
  • Convenient for translating
Subtitle File Handling
  • Fully supported formats: MicroDVD, MPL2, MPsub, SubRip, SubViewer 2.0 and TMPlayer
  • Partially supported formats: Sub Station Alpha and Advanced Sub Station Alpha
  • Support for a wide range of character encodings, including auto-detection
  • Conversions between all supported formats, including conversion of most markup tags
  • Unlimited undo and redo
  • Inserting, removing, splitting and merging subtitles
  • Find and replace, including regular expressions
  • Toggling of italics and dialog lines
  • Case changes
  • Spell-check
  • Common text error correction
  • Hearing impaired text removal
  • Breaking lines to a maximum length
  • Capitalizing lower case texts
  • Adapting to different CD-splits of video
  • Position shift and transformation
  • Duration adjustment
  • Framerate conversion
  • Use custom, non-standard framerates
  • Preview in an arbitrary external video player
  • Speech recognition advance handling
  • Batch save all open documents in chosen format 
  • Inline spell-check has been added to all editable multiline text fields.

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