There are so many reasons why you should pick up 4K Blu-ray discs over their Blu-ray and DVD counterparts, but the sales don’t reflect that. Both Blu-ray formats are outsold by DVD, and that’s a head-scratcher for me. 4K Blu-ray has superior audio and visual quality, but money talks, and DVD is able to keep the price significantly lower in most scenarios.
4K Blu-ray is still the newest format of them all, and it’s gone through some growing pains. I know a lot of people in real life who say they can’t see the difference between the physical media formats, and that amazes me. DVD is stuck at 480p resolution while 4K bumps that all the way up to 2160p. On top of that massive uptick in resolution, the audio quality is just a night and day difference.
With 4K TVs being the default TV you find in stores now, it just doesn’t make a lot of sense to watch DVDs on those big screens anymore. I understand not wanting to give up your collection, but you don’t have to do that. I still have quite a few DVDs, but I’ve found myself upgrading those discs to a newer format when possible, especially if they’re one of my favorite. I have Titanic on VHS, DVD, Blu-ray, and 4K Blu-ray. When I watch that movie, which is more than you’d think, I only pick the 4K. If you’re on the fence about whether 4K is worth it over its predecessors, maybe some of these discs can change your mind.
UHD Blu-ray technology
Trivia challenge
4K discs, Dolby Vision, and beyond — how much do you really know about UHD
Blu-ray?
4K VideoAudioHardwareFormatsStandards
What is the maximum video resolution supported by the UHD Blu-ray format?
Correct! UHD Blu-ray supports a maximum resolution of 3840 x 2160,
commonly known as 4K UHD. This is four times the pixel count of standard 1080p Full HD Blu-ray,
delivering stunning on-screen detail.
Not quite. The answer is 3840 x 2160, which is standard 4K UHD
resolution. While 8K (7680 x 4320) exists as a consumer format, UHD Blu-ray tops out at 4K — still a
massive leap over traditional Full HD discs.
What is the typical maximum data capacity of a dual-layer UHD Blu-ray disc?
Correct! A dual-layer UHD Blu-ray disc can hold up to 100GB of data.
This extra capacity over standard Blu-ray’s 50GB ceiling allows studios to pack in high-bitrate 4K video
alongside lossless audio tracks and bonus features.
Not quite. The correct answer is 100GB for a dual-layer UHD Blu-ray
disc. Standard Blu-ray maxes out at 50GB on a dual-layer disc, but UHD Blu-ray needed more headroom to
accommodate the much larger 4K video files and premium audio formats.
Which of the following lossless audio formats is natively supported on UHD Blu-ray
discs?
Correct! DTS-HD Master Audio is one of the lossless audio formats
officially supported by the UHD Blu-ray specification. It delivers bit-for-bit identical audio to the
studio master, making it a favourite among home cinema enthusiasts.
Not quite. DTS-HD Master Audio is the correct answer. Dolby Digital Plus
is actually a lossy compressed format, not lossless, while MP3 Surround and AAC 5.1 are not part of the
UHD Blu-ray audio specification at all.
Which High Dynamic Range (HDR) format was mandatory in the original UHD Blu-ray
specification?
Correct! HDR10 is the mandatory baseline HDR format for all UHD Blu-ray
discs. It uses static metadata and supports up to 10-bit colour depth with a peak brightness of 10,000
nits, significantly improving contrast and colour range over SDR content.
Not quite. HDR10 is the mandatory HDR format in the UHD Blu-ray spec.
Dolby Vision and HDR10+ are optional enhancements that some studios add on top, but every UHD Blu-ray
player and disc must support HDR10 as the baseline standard.
What laser colour is used in UHD Blu-ray players to read discs?
Correct! UHD Blu-ray players use a violet (blue-violet) laser with a
wavelength of 405nm, the same as standard Blu-ray. This shorter wavelength compared to the red laser
used in DVDs allows data to be packed much more densely on the disc surface.
Not quite. The answer is violet — specifically a blue-violet laser at
405nm. DVDs use a red laser at 650nm, and CDs use an infrared laser at 780nm. The shorter the
wavelength, the more data can be stored, which is why Blu-ray outpaces its predecessors.
What maximum video bitrate does the UHD Blu-ray specification allow for video
content?
Correct! The UHD Blu-ray specification allows a maximum video bitrate of
82 Mbps. This is substantially higher than standard Blu-ray’s 40 Mbps ceiling, enabling richer detail,
smoother gradients, and less compression artefacts in 4K content.
Not quite. The correct maximum video bitrate is 82 Mbps. Standard
Blu-ray tops out at 40 Mbps, and while streaming services like Netflix offer 4K, they typically deliver
it at just 15–25 Mbps — making physical UHD Blu-ray the highest quality option available to consumers.
Which video codec is most commonly used to encode 4K content on UHD Blu-ray discs?
Correct! H.265, also known as HEVC (High Efficiency Video Coding), is
the dominant codec used on UHD Blu-ray. It offers roughly twice the compression efficiency of H.264,
meaning studios can deliver 4K footage at high quality without exhausting the disc’s storage capacity.
Not quite. H.265 (HEVC) is the correct answer. While H.264 was the
workhorse of standard Blu-ray, it simply isn’t efficient enough to handle 4K video at acceptable quality
levels within the disc’s bitrate limits. AV1 is a newer codec but isn’t part of the UHD Blu-ray spec.
Which of the following connection types is required to pass a UHD Blu-ray signal at
full 4K HDR quality from a player to a TV?
Correct! HDMI 2.0 or higher is required to carry a 4K HDR signal from a
UHD Blu-ray player to a display. HDMI 2.0 supports the 18 Gbps bandwidth needed for 4K at 60fps with
HDR, whereas HDMI 1.4 maxes out at 4K/30fps without HDR support.
Not quite. HDMI 2.0 or higher is the correct answer. HDMI 1.4 can
technically carry a 4K signal but only at 30fps and without HDR, making it insufficient for the full UHD
Blu-ray experience. Component video is an analogue connection and cannot carry 4K signals at all.
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Lawrence of Arabia is a great choice
A classic and one of the best looking discs
Lawrence of Arabia is a fantastic candidate for a 4K upgrade now that it’s free from its original steelbook prison that was highly sought-after. The reason I shout this disc out is that it’s possible that you have a copy of it lying around on DVD or Blu-ray considering its age. It might not seem like an old movie is something that pops on a 4K disc, but those are actually exactly what you should be going for. Anything shot on film looks great with a well done 4K upgrade, and that’s why Lawrence of Arabia is.
The 4K version is printed on two discs, so there are no sacrifices in quality here. The end result is that one of the best movies of all time is available in a format that lets it shine brighter than ever before. I wouldn’t recommend picking up this version if you’re not a fan of the movie, but if you are, it’s a no-brainer.
The Wizard of Oz is another classic that shines on 4K Blu-ray
The best gets even better
Anybody who loves movies, and probably anybody who doesn’t, has seen The Wizard of Oz. I grew up watching this movie on TV, and the first time I saw it physically, it was on 4K Blu-ray. It’s hard to put into words what the leap from cable TV to 4K Blu-ray is, but it’s transformative. The Blu-ray Authority review says the 4K version of The Wizard of Oz is the best it’s ever looked, which is obviously high praise.
This is a great upgrade to make over your DVD version because it’s a timeless movie. People always come back to this movie, and each time you come back, there’s really no reason you shouldn’t do it in the best format available. Even at the higher price of a 4K disc, you’ll get your money’s worth out of this one once you watch it a few times.
Pretty much any Christopher Nolan release
Get those IMAX Enhanced scenes
While Nolan movies are tailor-made for the big screen, they also look great at home. A big reason for this is the shifting IMAX aspect ratios, something that first appeared on The Dark Knight Blu-ray and has continued ever since. This ensures that you’re getting the best experience possible at home, and these expanded ratios aren’t included on the DVD releases. These aren’t vital for your enjoyment of a movie, but they are definitely a nice selling point for physical media.
If you’re looking for a middle-ground, the Blu-ray releases of his films have the IMAX scenes, so you don’t have to fully upgrade to 4K if you don’t want to. I think it’s worth going the distance just for HDR, but either Blu-ray format is a big step-up over the DVD version of a Nolan film.
The Batman is a great modern release that looks excellent
Really good black levels on display here
The Batman is arguably the best Batman movie (I’ll leave that debate to other people) and it’s also one of the best looking 4K discs you can get. In case the title hasn’t made it clear, I’m talking about the Robert Pattinson-led film, and this disc is an excellent way to showcase the black levels that a 4K disc can offer. If you have a Mini-LED or OLED TV to go with this disc, you can see exactly what I’m talking about.
The DVD isn’t going to match these levels, so while you’ll still enjoy the movie’s story, the quality of the disc won’t be as good. I value the movie being good first and foremost, but if I can get something that enhances the experience visually, I appreciate that. The Batman is a movie that does just that, and it’s one of the best 4K showcases I can think of in recent memory.
