Change language

Extracting images from videos in Python

| |

Image analysis is a very common field in computer vision. It is the extraction of meaningful information from videos or images. The OpenCv library can be used to perform several operations on video.

Required modules:

 import cv2 import os 

Function used:

VideoCapture (File_path): Read the video (.mp4 format)

read (): Read data depending upon the type of object that calls

imwrite (filename, img [, params]): Saves an image to a specified file.

Below is the implementation:

# Import all required libraries

import cv2

import os

 
# Read the video at the specified path

cam = cv2.VideoCapture ( "C: Users Admin PycharmProjects project_1 openCV.mp4" )

 

try :

 

# create a folder named data

if not os.path.exists ( ’ data’ ):

os.makedirs ( ’data ’ )

  
# if not created, then issue an error

except OSError:

  print ( ’ Error: Creating directory of data’ )

 
# Frame

currentframe = 0

 

while ( True ):

 

# read from frame

ret, frame = cam.read ()

 

if ret:

< code class = "undefined spaces">  # if there is still video, continue creating images

name = ’. / data / frame’ + str (currentframe) + ’.jpg’

  print ( ’Creating ...’ + name)

  

  # write extracted images

cv2.imwrite (name, frame )

 

  # increment counter to make it

  # show how many frames were created

currentframe + = 1

else :

  break

 
# Free all space and windows as soon as done
cam.release ()
cv2.destroyAllWindows ()

Output:

All extracted images will be saved to folder named "data" on the system. 

Shop

Learn programming in R: courses

$

Best Python online courses for 2022

$

Best laptop for Fortnite

$

Best laptop for Excel

$

Best laptop for Solidworks

$

Best laptop for Roblox

$

Best computer for crypto mining

$

Best laptop for Sims 4

$

Latest questions

NUMPYNUMPY

Common xlabel/ylabel for matplotlib subplots

12 answers

NUMPYNUMPY

How to specify multiple return types using type-hints

12 answers

NUMPYNUMPY

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

12 answers

NUMPYNUMPY

Flake8: Ignore specific warning for entire file

12 answers

NUMPYNUMPY

glob exclude pattern

12 answers

NUMPYNUMPY

How to avoid HTTP error 429 (Too Many Requests) python

12 answers

NUMPYNUMPY

Python CSV error: line contains NULL byte

12 answers

NUMPYNUMPY

csv.Error: iterator should return strings, not bytes

12 answers

News


Wiki

Python | How to copy data from one Excel sheet to another

Common xlabel/ylabel for matplotlib subplots

Check if one list is a subset of another in Python

sin

How to specify multiple return types using type-hints

exp

Printing words vertically in Python

exp

Python Extract words from a given string

Cyclic redundancy check in Python

Finding mean, median, mode in Python without libraries

cos

Python add suffix / add prefix to strings in a list

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

Python - Move item to the end of the list

Python - Print list vertically