It is very easy to create an ISO image from any commercial DVD with the application K3B , already installed by default in Kubuntu , Ubuntu and other variant of Ubuntu .

How to burn a DVD with K3B:

1. Launch K3B,
2. go to Tools , then Copy the media and
3. select Create only one image .
4. Then go to the tab image to select the folder where the image file will be written.

3. Create ISO from DVD Using dvd2ISO

Here is a script that allows a mouse click, after slipping a video DVD in the drive, to end up with a functional ISO image of the DVD to the hard drive.
Install packages dvdbackup, mkisofs .
Create the file dvd2iso.sh copying it below in a text file with administrative privileges in / usr / bin / :

#! / bin / sh 
############################################ ######################### 
# dvd2iso.sh 
# 
# allows a mouse click, after slipping a DVD 
# Video in drive , ending up with an ISO 
functional # of DVD to the hard drive. 
# ... 
# Dependency: 
# - dvdbackup 
# - mkisofs 
# 
# Authors: 
# - djoole 
# - SandMan 
# - mr_djez  to  dot  
# 
# History: 
# 09/12/2010 ( 0.3) mr.djez 
# - formatting 
# - adding comment 
# - several small change (variable, expression, condition);) 
# - changes to the calculation of the execution time 
# - tests presence dependencies 
# - adding the 'uDF' mkisofs 
# - testing space 
# 19/12/2008 (0.2) SandMan 
# - adding the temporary directory 
# - time calculation 
# 11/01/2007 (0.1) djoole 
# - writing initial 
################################################# ####################
 
# VERSION = 0.3
 
# Start Time 
DATE_START = $ ( Date + % s )
 
### Variable (to change depending on your config) 
# Device DVD 
dvd_dev = / dev / sr0
 # Temporary directory used by the script 
# /! \ Will be created and deleted every time 
rep_app = / tmp / dvd2iso- $ DATE_START 
# storage directory iso 
rep_iso = / media / Doc
 
# Test dependencies 
list = "dvdbackup mkisofs"  
for i in  $ list ; do 
	qui  $ i  >  / dev / null
	 if  [  $?  -eq  1  ] ; Then 
		printf  "% s not found \ n install the package \" % s \ "  \ n apt-get install% s \ n "  $ i  $ i  $ i  
		exit  1 
	fi 
done
 
printf  " \ n Copy DVD to ..................% s \ n "  $ rep_app 
# Create directory 
test  !  -d  $ rep_app  &&  mkdir  $ rep_app 
# we run the backup dvd if sufficient space 
# space> size dvd 
if  [ $ ( df  $ rep_app  |  awk  '/ ^ \ / dev / {print $ 4} ' )  -gt $ ( df  $ dvd_dev  |  awk  ' / ^ \ / dev / {print $ 3} ' )  ] ; Then 
	# Backup dvd 
	dvdbackup -M  -i  " $ dvd_dev "  -o  " $ rep_app "  &&  echo OK ||  echo FAIL
 else 
	printf  "FAIL \ n FATAL \: Insufficient free space on% s \ n "  $ rep_app .
fi
 
# Backup file name 
dvdtitle = $ ( ls  $ rep_app )
 
printf  "Converting DVD ISO files ....................." 
# we start creating the iso if enough free space 
# space> size of the backup 
if  [ $ ( df  $ rep_iso  |  awk  '/ ^ \ / dev / {print $ 4}' )  -gt $ ( the  $ rep_app / $ dvdtitle  |  tail  -1  |  awk  '{print $ 1}' )  ] ; Then 
	# Create iso 
	mkisofs -DVD-video  -udf  -quiet  -o  " $ rep_iso / $ dvdtitle .iso"  " $ rep_app / $ dvdtitle /"  &&  echo OK ||  echo FAIL
 else 
	printf  "FAIL \ n FATAL \: Insufficient free space on% s \ n "  $ rep_iso 
fi
 
printf  "Delete temporary files ..................." 
# Clears backup files 
rm  -fr  " $ rep_app "  &&  echo OK ||  echo FAIL
 
# End time 
date_stop = $ ( Date + % s )
 
# Calculation period 
duree_total_sec = $ ( expr  $ date_stop - $ DATE_START ) 
duree_min = $ ( expr  $ duree_total_sec  /  60 ) 
duree_sec = $ ( expr  $ duree_total_sec  %  60 )
 
Report # 
printf  " \ n === === Operation ended! \ N  \
 Duration:% d% d min sec \ n  \
 File created: s.iso% in% s \ n \ n "  $ duree_min  $ duree_sec  $ dvdtitle  $ rep_iso
 
exit  0