I need some guidance on the best method to make “exact copy” backups of my DVD collection. I am using Ubuntu 12.04.
I have seen many posts on how to “backup” a DVD but, invariably, some manner of compression is being used.
What I want is an archival quality copy of the DVD with no loss of information so that I don’t need to keep the physical DVD. Hard drive space is not much of a concern.
What I have done in the past is use dd:
dd if=/dev/dvd of=/path/to/dvdcopy.iso
I wait for a bit and dd provides me with a lovely iso file that I can watch with VLC or Movie Player.
My understanding is that the above command gives me an exact (bit-for-bit) copy of the DVD. This is basically what I am after but dd isn’t removing the copy protection or region code.
My questions are:
1. Is the fact that I have not stripped the region code and copy protection going to cause me grief down the road?
2. Is there a better method for backing up a DVD that removes copy protection and region codes but leaves me with a lossless copy of my movie including the menus and extras?
3. Am I correct in believing that the dd command is giving me an exact copy of the movie? The reason that I ask is that the iso file is often much smaller than I would have expected. For example when backing up one commercial DVD the iso file was around 4.7 GB. I would have expected it to be closer to 9 GB for a commercial DVD.