So why would you want to record con­tent in 4K if you don’t have a de­vice to play it on? Read on.

HWM (Singapore) - - LEARN -

The ac­tual process of shoot­ing in 4K res­o­lu­tion is fairly sim­ple. While it dif­fers from phone to phone, gen­er­ally you just ac­cess the cam­era app, se­lect video, and then change the res­o­lu­tion to 4K. It is worth not­ing, how­ever, that a few smart­phones limit what op­tions are avail­able when record­ing in 4K. For ex­am­ple, both the Sam­sung Galaxy S5 and Note 3 de­ac­ti­vate image sta­bi­liza­tion (as well as HDR) when shoot­ing in 4K.

The big­gest lim­i­ta­tion of record­ing in 4K af­fects ev­ery smart­phone: none of them can record in 4K for more than five min­utes at a time. This is due to how Qual­comm’s Snap­dragon 800/801 chip pro­cesses 4K video data. Both Snap­dragon 800/801 chips uti­lize soft­ware-based HVEC (H.265) en­cod­ing/decoding, rather than a hard­ware-based so­lu­tion like those found in ded­i­cated 4K video cam­eras. This means that all the heavy lift­ing while record­ing videos has to be done by the CPU it­self, which puts it un­der heavy load. In turn, this leads to the pro­ces­sor over­heat­ing within just a few min­utes of use, re­sult­ing in the phone shut­ting down the cam­era app to pre­vent the CPU from fry­ing it­self.

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