Technology
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So a 4k movie is 100 GB? 2 hour movie would make it 110 mbps. Insane bitrate even for h.254 imo
The movies as shown in cinema are ~600GB
4K Blu Rays encoded in H265 are usually on 100gb discs, so I can see where they're coming from
4K bluray can be up to 144 mbps, so that's reasonable.
I have LOTR directors cut on my server, haven't bothered reencoding it because I'm not super experienced with keeping hdr 10 going to h265 or equivalent. Return of the king alone is around 130 gigs across two files, jellyfin says its bitrate is about 70 mbps.
Titanic is only about 74 gigs
Maybe it's just me but for 4k60fps h.265 video above 20 mbps looks indistinguishable to me unless I pause on a frame side by side to compare. I'm not sure about h.264 but it can't be too many times worse
I compressed some of the 4k rips I did, all my dvd and 1080p blurays, it's the HDR only that's stopped me from some of them as I found I lost it with the settings I was using and I put it on the "list of things I'll come back to later" shelf.
I recall some banding on a few of the dvd rips, probably was a little too aggressive with the settings I used, but they're still definitely watchable