Srt File: How To Convert Txt To

At 0:01 This is the first line of subtitles.

1 00:00:01,500 --> 00:00:04,200 This is the first line of subtitles. how to convert txt to srt file

3 00:00:08,000 --> 00:00:10,000 And this is the third line. If you have a .txt file with content similar to the following: At 0:01 This is the first line of subtitles

1 00:00:01,000 --> 00:00:04,000 This is the first line of subtitles. how to convert txt to srt file