Yep. On a Blu-ray disk, you have 25-100GB of space to work with. The Blu-ray standard allows up to 40mbps for 1080p video (not counting audio). Way more for 4K.
Netflix recommends a 5mbps internet connection for 1080p, and 15mbps for 4K. Reportedly they cut down their 4K streams to 8mbps last year, though I haven’t confirmed. That’s a fraction of what Blu-ray uses for 1080p, never mind 4K.
I have some 4K/UHD Blu-rays, and for comparison they’re about 80mbps for video.
They use similar codecs, too, so the bitrates are fairly comparable. UHD Blu-rays use H.265, which is still a good video codec. Some streaming sites use AV1 (at least on some supported devices) now, which is a bit more efficient, but nowhere near enough to close that kind of gap in bitrate.
Yep. On a Blu-ray disk, you have 25-100GB of space to work with. The Blu-ray standard allows up to 40mbps for 1080p video (not counting audio). Way more for 4K.
Netflix recommends a 5mbps internet connection for 1080p, and 15mbps for 4K. Reportedly they cut down their 4K streams to 8mbps last year, though I haven’t confirmed. That’s a fraction of what Blu-ray uses for 1080p, never mind 4K.
I have some 4K/UHD Blu-rays, and for comparison they’re about 80mbps for video.
They use similar codecs, too, so the bitrates are fairly comparable. UHD Blu-rays use H.265, which is still a good video codec. Some streaming sites use AV1 (at least on some supported devices) now, which is a bit more efficient, but nowhere near enough to close that kind of gap in bitrate.