Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:[0-9]+\n|\n)

1st Alternative[0-9]+\n

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\na line-feed (newline) character (ASCII 10)

2nd Alternative\n

\na line-feed (newline) character (ASCII 10)

Group 1(([0-9:,]+)([\s->]+)([0-9:,]+))

Group 2([0-9:,]+)

Character Class[0-9:,]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 3([\s->]+)

Character Class[\s->]+

+matches at least one character from the set below:

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 4([0-9:,]+)

Character Class[0-9:,]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^(?:[0-9]+\n|\n)(([0-9:,]+)([\s->]+)([0-9:,]+))$

New

1
00:00:04,019 --> 00:00:07,299
- cdcdc
- cddcd

2
00:00:07,414 --> 00:00:09,155
54564

00:00:09,276 --> 00:00:11,429
- 445454 - ccd
- cdscdcdcd

00:00:11,549 --> 00:00:14,874
line1
line2

Extraction

1
00:00:04,019 --> 00:00:07,299
- cdcdc
- cddcd

2
00:00:07,414 --> 00:00:09,155
54564

00:00:09,276 --> 00:00:11,429
- 445454 - ccd
- cdscdcdcd

00:00:11,549 --> 00:00:14,874
line1
line2