Subtitle Edit is a free (open source) editor for video subtitles - a subtitle editor :) With SE you can easily adjust a subtitle if it is out of sync with the video in several different ways. You can also use SE for making new subtitles from scratch (do use the time-line/waveform/spectrogram) or translating subtitles. For a list of features see below or check out the Subtitle Edit Help page. On my blog, you can download the latest beta version and read about/discuss new features. Also, you can watch a few videos about installing and using Subtitle Edit. Dny238 has written a nice tutorial about Syncing Subtitles with Subtitle Edit :) A Subtitle Edit dll (LibSe.dll) is available for programmers (BSD New/Simplified license). Compile it from source code. Download latest version of Subtitle Edit
Note: SE requires Microsoft .NET Framework Version 4.0 or later Get the full C# source code - GPL or LGPL license Blu-ray sup reading code is under the Apache License and Matroska subtitle parsing uses zlib code with a BSD style license.