Follow the on-screen instructions to assist the software in recognizing the characters. The software will start the OCR process.Choose the IDX file you want to convert.Open SubRip and click on the ‘File’ menu, then select ‘Open Vob(s)’.Download and install SubRip from its official site.It uses Optical Character Recognition (OCR) to convert the bitmap images in the SUB file into text. SubRip is a Windows-based software specifically designed for this task. There are several tools available for converting IDX/SUB files to SRT, including SubRip, Avidemux, and Handbrake. Because of its simplicity and wide-ranging support, it’s often the preferred format for subtitles. On the other hand, SRT (SubRip Text) is a plain text file that contains subtitle information including the sequential number of subtitles, start and end timecode, and the subtitle text. The IDX file contains the time codes for the subtitles and the palette, while the SUB file contains the actual subtitle images. IDX/SUB files are a type of bitmap subtitle format used in DVDs.
Before we delve into the conversion process, let’s understand what IDX/SUB and SRT formats are.