this post was submitted on 11 Jul 2024
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DVD is better than Blu-ray in that regard - I've ripped DVDs that look like they fell off a truck and got run over multiple times and had no problem, meanwhile about 1 out of 5 Blu-rays I got from Netflix would have problems despite looking pristine. It has to do with the data density, Blu-ray packs so much more in the same amount of space, one microscopic scratch wipes out so much data...
Of course some DVDs suffer from bad materials. I was re-ripping my collection recently, and I have a few that have sat in a closet untouched for years, not a scratch on them, but the drive won't even recognize there's a disc. Probably oxidation of the reflective layer.