Now you can find the same 4K video from few GBs to a hundred GBs, and I am wondering: where to stop? With music there is a similar phenomenon by which after a certain bitrate it becomes an esoteric art to detect improvements. So, what is your “very good enough” bitrate for 4K videos?
This is a bit open ended depending on type of film, screen watching it on, codec etc.
Personally if I’m watching on my 65inch OLED. I can be happy with 30mbps HEVC. However if it’s a cartoon style then 15mbps is fine. On the other hand if it’s a dark film, then I absolutely want the 4k bluray rip, compression in dark areas on an oled can be really noticeable.
I do however have a gigabit connection and buckets of storage so I tend to just get the highest bitrate I can.
One consideration for me is: how grainy is the source material, and how much do I care about retaining that? Because film grain is the first thing to go when you apply too much compression. Dark scenes, too.
For kids movies or something I’ll watch casually: 15gb x265 rips are fine.
For new releases that I want to watch and maybe will a few more times: I’ll grab the 20-30gb web-dl and enjoy that.
For a movie I consider a masterpiece and want the best possible? Give me the 50-80gb remux.
At the end of the day it’s about what you like, what is available, and how much space you got.
My rule of thumb has been 8GB per hour of content for 4K (I don’t remember where I heard of got this from, so at the end of the day, this is just some arbitrary number). I usually stick to x265 encodes and so far this had been good enough for me. Some prefer the best (untouched remux), but like you mention, these files are huge. Even though I have many drives, I dont want each movie being 70+GB per file. Sometimes I break my rule of thumb and do get “higher quality” (that isn’t a remux). I think the biggest file I have is around 50GB for a x265 2160p encode of a movie where a certain king returns. As with everything, there are exceptions. Just do what you want.
This has been good enough for me. Obviously, the bitrate of audio matters and its format. That, in and of itself, is a whole other issue ( lossless or not, channels, etc…)
Honestly, for me, remux is the only way to go. Why would you risk downgrading the original quality? Is disk space / bandwidth really an issue in 2023?
