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My plan is to make backup copies of the DVDs whole, so I have all of the features and extras, and am certain that I can verify that they are the exact blu-rays
by GauntletWizard 3y ago
My plan is to make backup copies of the DVDs whole, so I have all of the features and extras, and am certain that I can verify that they are the exact blu-rays that other people have. We don't exactly have a list of hashes of the entire contents of the discs, but the volume keys will decrypt the data, and there's checksums on that, so we should be able to verify all the way down the chain.
(If anyone knows how to do the actual checking, I'm all ears - I'm an Exact Audio Copy guy for my CDs)
- bombcar 3y agoThe problem is that Blu-ray codecs stink. A 4K Blu-ray rip can be like 80gb, whereas a recode will fit on a dvd.
- GauntletWizard 3y agoI don't disagree, but at the same time - a 20tb HD is $300, and it can store 250 disks. Even with a 500 disk collection, and redundancy, I'm looking at only about $1200 in storage costs. Even assuming replacing one of those disks per year, the price of storage is only going down. Not that I'm not planning on re-encoding for everyday use, but I'll take the hit in storage costs to keep the "originals" around.
- bombcar 3y agoMy originals are the Blu-rays themselves; ready to be ripped again if needed.
- account42 3y agoIf you only have one backup copy of the originals then you'll have zero backup copies of the originals when you need them.
- account42 3y agoSomewhat agree. I do still re-encode most Blu-Rays to get rid of the black bars that are encoded in the video stream because apparently mandating players support arbitrary video aspect ratios would make too much sense.
- TheCoelacanth 3y ago4k Blu-rays are HEVC, which is one of the most efficient codecs available. They do use a much higher bitrate than streaming services tend to use, but the streaming versions are sacrificing some quality to save bandwidth.
- account42 3y agoCorrect, except that H.264 has multiple profiles so if you don't need to target cheap player hardware you can still egdge a bit more compression out of them without a noticeable sacrifice in quality. But yeah, the situation isn't nearly as ridiculous as it was with older 1080p Blu-Rays.
- account42 3y agoA DVD-sized reencode of a 4K movie will be shit quality. Even for 1080p you really want to allow for > 10 GiB depending on the movie content and length. 4K Blu-Rays are also usually already at least H.264 so it really is limited how much smaller you can make them without sacrificing image quality. Older 1080p Blu-Rays really do use stone-age codecs though and can easily be compressed to a fraction of the disk size without visible loss.