4K video

[pawn]

I apologize if this question has already been raised.

From what I have read, there are many cameras (including relatively cheap ones) that can produce 4K video. Questions on 4K video:

1. Are our eyes able to perceive 4K?

2. Are there programs that are able to edit 4K video?

3. Roughly what is the percentage of units (that are available in the market) that can display 4K video?

Thanks

 

[BozillaNZ]

The demand of 4K comes from the bad quality 1080p sampling and encoding we currently have. A 4K video, even when down sampled to 1080p, is far sharper than current 1080p video recordings. If I can get a full sensor sampled 1080p in 4:4:4 and high bitrate recording, I wouldn't be wanting 4K capability so fast.

Which is why the movie industry still have many professional recorders using 1080p or 2K format, because they have 2K done right.

 

[glokenpop]

I apologize if this question has already been raised.

From what I have read, there are many cameras (including relatively cheap ones) that can produce 4K video. Questions on 4K video:

1. Are our eyes able to perceive 4K?

Depends on the screen and how you watch it I imagine. I barely notice and only if i think about it HD vs SD on the lounge looking at the telli but can see a big difference on my computer monitor sitting at my desk. I think the big thing with 4K video is movies - pretty much anyone can film a movie with consumer priced equipment now.

2. Are there programs that are able to edit 4K video?

Loading…

www.wondershare.com

3. Roughly what is the percentage of units (that are available in the market) that can display 4K video?

No idea.

Thanks

--
http://duyle.smugmug.com

 

[victorian squid]

BozillaNZ pretty much nailed it.

IMHO for most practical purposes, 4k isn't here yet. It's pretty much for serious cinematography, otherwise there's a lot of catching up to do for the rest of us. If I were buying a high end video camera like a Red - and had the insane processing power and video editing software to back it up, then yeah - for my 5-6 digit investment 4k (or even 6K like the Scarlet Dragon) would be necessary.

As far as the end-user video playback end of things - are you throwing away your HD TV any time soon?

Any ideas what you'd be developing that sort of video for?

I think if a camera I wanted happened to have it - then sure, why not? Go ahead and grab it. I think that we'll be seeing it just to show off - like the Sony. I shoot a lot of video - and for the foreseeable future I'm not at all concerned about it.

Now, if my career suddenly veers off in that direction in a serious way - then if I'm looking at the next generation of Camera Cinema cameras - like the gorgeous new EOS C100, or even a little Black Magic Cinema Camera, that would be something to future proof myself with. But for now, I'm not concerned with future proofing myself with something I won't touch for a few years!

I've already started wondering about my next move on an NAS for regular photography RAW files and video - and BOY does regular HD video take lots of space!

I can't even imagine what a 4K RAW video file would be like! I've got an i7 Haswell 4770k @ 3.5 GHz that's overclocked on an Asus Gryphon, 32 Gigs RAM, 4Gig video card, a 500Gig SSD (for system & software) and 3 4TB HDs, not to mention the off-site storage. All of this would fall to its knees with a few hours of 4K RAW files!

 

[pgb]

I can't even imagine what a 4K RAW video file would be like! I've got an i7 Haswell 4770k @ 3.5 GHz that's overclocked on an Asus Gryphon, 32 Gigs RAM, 4Gig video card, a 500Gig SSD (for system & software) and 3 4TB HDs, not to mention the off-site storage. All of this would fall to its knees with a few hours of 4K RAW files!

Nice system, similar to mine but no NAS.

It's not as bad as you think. Red raw has about 5:1 compression and it's also bayer sub sampled with further size savings, around 200GB /hour for 4K. Red has been capable of 4K since the beginning, 8 years ago, but most finishes in HD/2K which is much the same.

If your system has a good GPU or two and Resolve then your making movies. A NAS is a nice idea.
For editing just make proxy files with Resolve, then relink to the originals for the grade and mastering. Any newish laptop can edit HD proxy files.

Our computers make Prores proxy files at 150fps, or 6x realtime, divide that by 4 for 4K.
It's all about the workflow. Try editing 4K Red raw for a week and its's not fun.

Uncompressed raw is really a waste of space especially with new Prores XQ codec but Prores HQ or 444 is pretty harmless.
It's funny all the home movie makers insisting on 4K when Hollywood produces very little.
TV, the 4K standard is still being developed but it will be H265.

https://www.arri.de/news/news/alexa-xrxt-supports-new-prores-4444-xq/

4K, it looks good if you don't sit too far away from your TV or the cinema screen.
8K will be pure marketing.