O DVD can be converted to a file tree or a burnable ISO9660 file, if that's what you want. O Shrinking factor can be 2-pass computed (best results) or a 1-pass adaptive guess-as-we-go compression method may be chosen (faster). O Onboard version of vamps and dvdauthor. DVD95 is an GNOME application to convert DVD9 to DVD5 (4.7GB).K9copy-reloaded packages for Ubuntu 14.04 and newer and Debian Jessie I could not get the newest versions to install because of dependency issues, but the link below has a method. The menu shortcut did not come up, but if I created a new shortcut launcher with just 'k9copy' as the command, that works I could also edit the menu or original shortcut to only use k9copy. The k9copy v3.03 links below installed in my Linux Mint 19 after it removed the 'libavcodec-ffmpeg-extra56' package, which I can re-install.

There is a fork of K9Copy called 'K9copy-reloaded' for Linux Mint 17.x, 18.x using their PPA or deb files, and Linux Mint 19.x users can use the deb file below. MakeMKV can also rip DVD/Blu-Ray discs into digital video '.mkv' files which can then be resized or burned to a DVD disc or easily converted to another video file format. If it is a video or movie, there are various techniques and application options for reducing their file sizes. If you run ' inxi -Fxzd' from the console terminal prompt, highlight the results, copy and paste them back here, that should provide enough information. It would help to know more about your system setup.

How to compress iso files