This Python script reads a SubRip Subtitle (SRT) file, parses its content, and converts the subtitles into a list of dictionaries. Each dictionary represents a subtitle entry with index, time_start, time_end, and text properties. The time_start and time_end properties are converted from the HH:MM:SS,mmm format to seconds.
1
00:00:01,000 --> 00:00:04,000
This is the first subtitle.
2 00:00:05,000 --> 00:00:08,000 This is the second subtitle.
3 00:00:09,000 --> 00:00:12,000 This is the third subtitle.