8K video for about 600 bucks (¥4,299)

[Emanuel]

https://petapixel.com/2019/04/29/nubia-red-magic-3-smartphone-shoots-8k-and-has-a-built-in-cooling-fan/

https://sparrowsnews.com/2019/04/28/nubian-red-devil-3-supports-1920fps-super-slow-motion-shooting-the-worlds-first-8k-video-recording/

https://sparrowsnews.com/2019/04/28/nubia-red-magic-3-king-of-gaming-here-is-why/

https://global.redmagic.gg/

 

[JurijTurnsek]

Search for full size photo samples from that 48mpx sensor and you will see that this 8K image is pointless. Downsampled to 4K it makes all the sense, but the original 8K mush is not worth the extra disc space.

[Emanuel]

Pick up your color ; -)

[amanieux]

snapdragon 855 does not support 8k video recording so is there a external video chip that records 8k video such as ambarella h3 ? https://www.ambarella.com/news/104/122/Ambarella-Introduces-8K-Ultra-HD-SoCs-for-Virtual-Reality-and-Drone-Cameras

On 4/30/2019 at 9:45 AM, JurijTurnsek said:

Search for full size photo samples from that 48mpx sensor and you will see that this 8K image is pointless. Downsampled to 4K it makes all the sense, but the original 8K mush is not worth the extra disc space.

you mean it is the smartphone lenses that does not resolve enough details or you mean it is the jpeg quality that compresses the 48mpix image too much and removes details ?

[androidlad]

No.

I've confirmed with industry sources that the so-called 8K video is "AI upscaled" from regular 4K capture. Also the so-called "1920fps" slow-motion mode is also "AI interpolated" from 960fps.

[Waynes]

On 5/2/2019 at 1:52 AM, androidlad said:

No.

I've confirmed with industry sources that the so-called 8K video is "AI upscaled" from regular 4K capture. Also the so-called "1920fps" slow-motion mode is also "AI interpolated" from 960fps.

 

On 5/2/2019 at 1:52 AM, androidlad said:

 

Hi.  Why not upscale it to 8kp60 from 4kp60 then?  8kp15, is equivalent to 4kp60 in data rate, why not do that, the chip supports it in HDR?  It's a shame it's not half the size, genuine 8k and a camera phone.  8kp15 is a negative as far as a feature goes.  They better off do it for real, or make a $300 camera phone with it for real (and dual hot swappable storage cards, and extra definable buttons).

Now, unfortunately it appears that the 855 video section is too weak for this (but why limit the resolution)?  But the chipset can ingress 48mp at 30 fps from a sensor, and maybe a 14 bit interface (though the consumer high res sensor usually tops out at 8-12 bit depth at those resolutions in highest video rate).  Now flip that around, that's 48fps at 30mp, so doing an Arri, and close enough upscaled to 8kp50.  As it can ingress that pixel rate, it likely also debayers it.  Cineform is now open source, but Bayer version requires a user license.  By splitting the processing up between the hardware encoder, GPU, CPU and DSP you could encode 8kp50 4:2:2 Cineform, preserve the Bayer values in it like blackmagic raw does, and output to a USBC or wifi ssd.  However, there maybe a simpler way.  You could use JPEG, JPEG xr or JPEG xl (if functions supported or if programming can be used to make up for missing functionality) and heif.  Prores is doable.  The old iOS app vizzygig used to use the still camera hardware to take video at 4k and higher, as a series of photos, this started when the iPhone was limited to fullhd video, in 4k days it was a lot higher than 4k.  But, you could try this with any 855 camera phone with a suitable sensor.

The interesting thing is that even the 835/845 were meant to connect to 32mp sensors.  Could the cheaper 48mp sensor phones actually do 8k?

Samsung has an 8k capable processor.  Ironically their sensor isn't.  But they have a 64mp sensor coming, with around 16 stops HDR.  The funny thing is, when asking a sales person if they were getting the phone, they brought up a page with might have listed a Samsung processor.  I sure hope there are two versions, and the international one is actual 8k.  But, it well likely be a mistake.