#get the vobs 

vobcopy -i /mnt/dvd -m

#the vobs must be in capital for mkisofs to work
#  and must not exceed  eth 4.3gb limit  
# or you'll have to use a dual layer dvd to burn them on or shrink it with k9copy can i do this from command line which tools ?

#make an iso image 

mkisofs -dvd-video -o dvd.iso /path/of/your/vob/files

# burn to dvd 

 growisofs -dvd-compat -Z /dev/hdc=dvd.iso

#hdc dvd device

#directly with out the iso stage 

 growisofs  -dvd-video -udf -Z /dev/hdc dvd/

#dvd/= path to your vob files
#or 

mkisofs -dvd-video -udf dvd/ | builtin_dd of=/dev/hdc obs=32k seek=0 
 
#or if the vob files are still in lower case this  worked  

growisofs  -dvd-compat -udf -Z /dev/hdc  dvd/

#/dev/hdc=your dvd player       

#dvd/= path to your vob files