On Sun, Dec 18, 2022 at 7:18 PM Bill Cunningham <bill.cu1234@xxxxxxxxx> wrote: > Too answer many people's questions here, as to what I want to > accomplish; is there some way to make these huge 7 GB ISOs smaller? > Converting to an mp4 would be the simple answer, but not a simple task > as I am finding. Assuming you have a DVD that is not encrypted..... - mount the DVD - in the VIDEO_TS folder there will be several files names VTS_xx_y.VOB, where "xx" and "y" are numbers - cat all of the VTS_xx_*.VOB files together with something like "cat VTS_01_*.VOB > title_01.mpg". cat does not care if the files are text or binary - it just concatenates them together. - use the video player of your choice to play the *.mpg files and determine which you wish to keep (I like many others prefer vlc). - you can also use dvdbackup to extract the title set(s) if you don't want to deal with the file structure yourself - if you wish to convert the *.mpg file to mp4, you can use any of several tools. ffmpeg is one that many people favor. The command would be something like "ffmpeg -i title_01.mpg title_01.mp4" - note that you might need to add other options to get a higher compression rate (with corresponding loss of quality) to significantly reduce the file size. google "ffmpeg convert DVD to mp4" and you should find several "cheat sheets". - alternatively you can use one of the OSS linear video editors to do the conversion; i.e. if you use KDE you can install kdenlive, import the *.mpg file, and have it do the conversion. - note that pretty much all of the tools that can do the conversion will have a certain amount of "learning curve". Re: DVD structure - there is an AUDIO_TS directory that has to be present for the structure to be compliant, but unless the DVD provides DVD-Audio (basically a super-CD), it will be empty. All of the video (and associated audio tracks) will be in the VIDEO_TS directory. The files in the VIDEO_TS directory are broken into "title sets" - each file is named *_xx_y.*, where "xx" is the title set number. Each title set will have *.IFO, *.VOB, and *.BUP files. The IFO files contain information such as chapter times, menu items, etc. *.BUP files are backup files - I think they protect against disc damage to the sectors in the corresponding *.IFO files. The VOBs are the actual "video objects" - i.e. the mpg encoded video. Each VOB is split into multiple files such that no file is larger than 2GB. That is my non-expert understanding of DVD structure. I'm sure if I got anything horribly wrong someone else will correct me. You can probably also find this info via googling. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
