Acer Unveils 6-inch Smartphone with 4K Video

11473769 said:

11473579 said:

More like 1080p, then scaled to 4k.

No way we have cameras upward of 4 grand that are now starting to put out 4k video, and here we have a phone with 4k video? Nah.

The go pro hero 3 shoots 4K video at a slow 15fps, so i don't see a problem with a smartphone being able to do 4K at around 24fps.. 4K is 8MP, it's nothing magic or spectacular. As long as you have a fast enough memory card, and your circuitry can handle the bandwidth of constantly taking and dumping 8MP pictures, it's very possible using a dedicated gate array or something to constantly do the same task over and over again.

GoPro 3 has a customized processor designed for processing and encoding video data, good luck reaching 5 fps on a smartphone with even decent encoding. That's nearly 200 MB/s of raw video data to process from what I read it sound's like the GoPro encodes video down to around 60+ MB/s @15fps. So expect a much higher data rate written to flash, or some truly crappy video.

No global launch meaning the US won't see it for a while if at all. Only 2gb of ram and 16gb of storage is behind the times now. Your going to need a 64Gb SD card at least for the 4K video if not 128gb.

4k video? I guess I am goona connect my external hard drive as I take video with that phone.

that's higher than a retina display, so why?

11474412 said:

GoPro 3 has a customized processor designed for processing and encoding video data, good luck reaching 5 fps on a smartphone with even decent encoding. That's nearly 200 MB/s of raw video data to process from what I read it sound's like the GoPro encodes video down to around 60+ MB/s @15fps. So expect a much higher data rate written to flash, or some truly crappy video.

So does nearly every mobile phone; it's a module built into the SoC along with all the other stuff. The image sensor's data is crunched by this module rather than the phone's generic processors. So 4K will not be difficult from a processing perspective. Regarding the storage... yeah, you'll probably need UHS-1 compatible SD cards or be stuck with recording to internal memory. Or, they will simply knock the quality down a few notches to make it work.

Sure it can be 4K, but I doubt it'll be good 4K. Interesting idea, even if it is impractical and unnecessary.

11474412 said:

11473769 said:

11473579 said:

More like 1080p, then scaled to 4k.

No way we have cameras upward of 4 grand that are now starting to put out 4k video, and here we have a phone with 4k video? Nah.

The go pro hero 3 shoots 4K video at a slow 15fps, so i don't see a problem with a smartphone being able to do 4K at around 24fps.. 4K is 8MP, it's nothing magic or spectacular. As long as you have a fast enough memory card, and your circuitry can handle the bandwidth of constantly taking and dumping 8MP pictures, it's very possible using a dedicated gate array or something to constantly do the same task over and over again.

GoPro 3 has a customized processor designed for processing and encoding video data, good luck reaching 5 fps on a smartphone with even decent encoding. That's nearly 200 MB/s of raw video data to process from what I read it sound's like the GoPro encodes video down to around 60+ MB/s @15fps. So expect a much higher data rate written to flash, or some truly crappy video.

When you design a processor for a dedicated task, it can be very efficient and much more powerful for said task because you can move bits and information in parallel for every clock cycle. It doesn't have to waste time making decisions or processing code, and the math is much quicker as well. It just continues to move data like an assembly line within the processor until the final result comes out, which is probably a compressed format of 4k, which then has a lower bandwidth to feed into memory. As CRARC said, it can be designed as a module into a SOC processor, or be a dedicated chip, and as long as you solve the storage memory bandwidth bottleneck, it should be able to do it.