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Are movie and show file sizes more efficient than they were years ago? (lemm.ee)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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This may be a stupid question, but I just got back into pirating some shows and movies and realize that many of the QxR files are much smaller than what I downloaded in the past. Is it likely that I am sacrificing a noticeable amount of quality if I replace my files with the smaller QxR ones?

For example, I have Spirited Away from 2017 at 9.83 GB, but I see the QxR is only 6.1 GB. I also have the office from 2019 and the entire show (no bonus content) is about 442 GB, while the QxR version is only 165.7 GB. Dates are what they are dated on my hard drive, can't speak to their actual origin, but they would've been from RARBG. (Edit to add: I also can't really speak to the quality of the downloads, back then I was just grabbing whatever was available at a reasonable size, so I wasn't deliberately seeking out high quality movies and shows - a simple 1080p in the listing was enough for me).

I did some side by side on episodes of the Office (on my PC with headphones, nothing substantial), and I don't notice any differences between the two.

Thoughts on this? Are people better at ripping/compressing/whatever now that they can do so at a smaller size without sacrificing noticeable quality?

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[–] [email protected] 1 points 1 year ago (1 children)

That is interesting. Of course there aren’t any HDMI CD Video players so it doesn’t much matter. But it’s interesting how a 4 GB DVD in H.262 would compare to a 1080p copy of the same movie in H.265.

I wonder if there’s a lot of room for encoders to improve the quality per byte without changing the format. For instance jpeg and mozjpeg.

[–] [email protected] 1 points 1 year ago

There's so much room that format specifications don't tell you how to encode, only how to decode. Designing the best encoder is a huge research project.