Default [Q] uhd video on f340k ? how to enable ir like att variant

I notice that the att variant has uhd video recording can it be posible to port that to the korean version ? Pleas help
LG G Flex F340s
iPhone 5s 64GB
Nexus 5 ROM testing 32GB
LG G3 F400K
LG G3 D855 32 gb
Samsung Galaxy S5 Active
Note 3 Exynos
Teak Moto X 32gb Dev Edition
Samsung Galaxy S5 Exynos
Samsung Galaxy S5 Qualcomm
Samsung Galaxy S5 Qualcomm S805 prime 2k
Htc One M8 Gun Metal
Latin american reviewer in spanish @ijotech