Because the sub subtitle uses the caption of image-based forms to store the data, so it takes too much space and it can not be opened or edited. However, the ssa subtitle is can be attached to the author information, revision information, subtitles parameters, and the definition of a good pre-used and it can be edit using Notepad. So maybe you want to convert sub or idx to ssa subtitle in order to use conveniently. This article will guide you to achieve it.

Take converting sub to ssa subtitle as an example.

1. Download the Subrip utility from HERE.
2. Launch Subrip, and select Open VOB(s) from the File menu.
   
   

   Convert SUB or IDX to SSA Subtitle
3. Click Open Dir and the Open dialog box appears. Select the target sub subtitle and click Open to confirm the selection.
   
   

   Convert SUB or IDX to SSA Subtitle
   
   
   

   Convert SUB or IDX to SSA Subtitle
4. First you should choose English in the drop-down menu of Language stream. Click the button under Characters matrix file as the following screen, select the English font file such as 0312.sum from the Characters matrix folder, and click Open.
   
   

   Convert SUB or IDX to SSA Subtitle
   
   
   

   Convert SUB or IDX to SSA Subtitle
5. Click Start to confirm to begin the conversion.
   
   

   Convert SUB or IDX to SSA Subtitle
6. In the process of the conversion, it identifies the Character automatically by default. However, you should type the character by yourself when it can not be identified.
   
   

   Convert SUB or IDX to SSA Subtitle
7. 7.After the conversion completed, you should save the output. Choose Set Output Format on the content menu of Output Format.
   
   

   Convert SUB or IDX to SSA Subtitle
8. The Output Format dialog box appears, select Sub Station Alpha(*.ssa) under Text Formats in the left pane. And then click  Convert to this Format to confirm the conversion.
   
   

   Convert SUB or IDX to SSA Subtitle
9. Select Save As on the content of File, type the name of the target subtitle file in the File name box and choose Sub Station Alpha(*.ssa) from the drop-down menu beside Save as type.
   
   

   Convert SUB or IDX to SSA Subtitle
   
   
   

   Convert SUB or IDX to SSA Subtitle

     Thus you have complete the operation of converting sub to ssa subtitle.

Author: Jjsclm