Yes, I know what it's capable of. But that means nothing if the source isn't capable of these resolutions and colour depths. It just means you're getting 32 bits of shit when 16 bits would have been adequate.
I know about that. I have a 4K projector that gives me something like an 88-inch screen. But again, that assumes your film had true blacks and bright whites to begin with. You can't reproduce what was never there.
Even one that's been stored in a damp garage for 94 years?!
There's just so many misconceptions around film that I don't know where to start.
Again, a list of buzzwords and marketing terms. DVD offered uncompressed PCM sound as standard, right back from 1995. That's nothing new.
You realize DTS-HD MA doesn't actually upgrade anything, right? And you know a standard BD handles it as well, right? That wasn't invented in the 4K era.
You're just gonna have to accept that with some source material, such as old MJ concerts, a 4K transfer just isn't possible, and in those cases, a DVD will give exactly the same picture/sound quality as a BD or 4K BD or 8K BD. Except that the DVD is cheaper and better for the environment.
What's happening here, you're trying to one-up me? In that case, my PhD is in image processing. I literally got paid to analyse contrast, noise and resolution, on state-of-the-art equipment, using software that I wrote, for 70 hours per week, for 4 years.
Yes, not every source benefits equally, and yes, film condition matters. But properly handled 4K scans — even of old materials — can retain more detail, cleaner grain, and better tonal gradation than what gets crushed in 1080p or DVD. Look at how labels like Criterion and Arrow restore early 20th-century films — it
absolutely makes a difference.
As for audio: sure, PCM was possible on DVD, but rarely used due to size limits, especially on feature films. 4K Blu-rays give studios the space and freedom to use lossless tracks by default, not exception. DTS-HD MA may not “upgrade” a source, but it
preserves what’s there without lossy compression — that’s the point.
Let's say a 2-hour uncompressed PCM track at CD quality (16-bit/44.1kHz) takes up around 1.2–1.5 GB for stereo. At 24-bit/48kHz or higher, which is common on Blu-ray and 4K UHD, you’re looking at several gigabytes just for audio alone.
Now factor in the video stream (especially if it's high bitrate progressive scan or HD downscaled), menus, subtitles, and any extras — and a dual-layer DVD maxing out at 8.5 GB just doesn’t cut it. That’s exactly why DVDs almost always use compressed Dolby Digital (AC-3) or DTS at reduced bitrates.
Blu-rays and 4K BDs give you the space to include full-bitrate video
and lossless audio like PCM, DTS-HD MA, or TrueHD — with zero compromise. So while it’s technically true DVD
could carry PCM, in practice, it almost never did — and certainly not at the quality levels modern formats can deliver.
And yes, I agree: some sources, like tape or early digital masters, won’t magically become UHD masterpieces. But the claim that "DVD gives the same quality" as 4K BD just isn’t accurate — it depends on the source and the transfer, not the runtime or age. Dismissing everything as “hype” ignores the real advances we’ve made in preservation, scanning, and mastering.
Also, let’s not forget that even video sourced from tape — which obviously isn’t native HD — can still benefit from Blu-ray or 4K workflows. A great example is the
Doctor Who classic season restorations. These were originally shot on SD broadcast formats, but their restoration team apply advanced cleanup, noise reduction, color grading, and upscaling techniques that simply wouldn’t fit on a DVD.
The results may not be true HD, but they’re significantly cleaner, more stable, and artifact-free compared to DVD versions. DVD’s 480p resolution, heavy compression, and limited bitrate just can’t hold that level of enhancement without throwing away a lot of the detail.
So, no — I’m not trying to one-up anyone. But I am pushing back against misinformation, because a lot of people end up missing out on amazing restorations just because someone told them “it’s all the same.”