Pattern Breakdown
Understanding the regex pattern \.(mp4|webm|mov|avi|mkv|flv|wmv)$:
- $ - End of string
- (...) - Capturing group
- | - Alternation (OR)
Examples
| Input | Result | Explanation |
|---|---|---|
movie.mp4 |
✓ Match | MP4 video |
clip.webm |
✓ Match | WebM video |
Code Examples
JavaScript
JavaScript
const pattern = /\.(mp4|webm|mov|avi|mkv|flv|wmv)$/;
const text = "movie.mp4";
// Test if string matches
if (pattern.test(text)) {
console.log("Valid!");
}
// Extract matches
const matches = text.match(pattern);
console.log(matches);
Python
Python
import re
pattern = r'\.(mp4|webm|mov|avi|mkv|flv|wmv)$'
text = "movie.mp4"
# Test if string matches
if re.match(pattern, text):
print("Valid!")
# Find all matches
matches = re.findall(pattern, text)
print(matches)
PHP
PHP
<?php
$pattern = '/\.(mp4|webm|mov|avi|mkv|flv|wmv)$/';
$text = "movie.mp4";
// Test if string matches
if (preg_match($pattern, $text)) {
echo "Valid!";
}
// Find all matches
preg_match_all($pattern, $text, $matches);
print_r($matches);
?>
Java
Java
import java.util.regex.*;
String pattern = "\\.(mp4|webm|mov|avi|mkv|flv|wmv)$";
String text = "movie.mp4";
Pattern p = Pattern.compile(pattern);
Matcher m = p.matcher(text);
if (m.matches()) {
System.out.println("Valid!");
}
Use Cases
Common applications: Video upload validation, media servers
- Form validation and input sanitization
- Data extraction and parsing
- Search and replace operations
- API request/response validation
- Log file analysis
Frequently Asked Questions
What is the regex pattern for video file regex?
The regex pattern is: \.(mp4|webm|mov|avi|mkv|flv|wmv)$. Match common video file extensions.
How do I use the video file regex pattern in JavaScript?
In JavaScript: const regex = new RegExp('\\.(mp4|webm|mov|avi|mkv|flv|wmv)$'); or const regex = /\.(mp4|webm|mov|avi|mkv|flv|wmv)$/;
Does this pattern work in Python?
Yes, use: import re; pattern = re.compile(r'\.(mp4|webm|mov|avi|mkv|flv|wmv)$') in Python. Most regex patterns are cross-language compatible.
What are common use cases for video file regex?
Video upload validation, media servers
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