4k video on a cell phone can good! By default 35mbps is too low for any motion to stay sharp. Most 4k cell phone video looks worse then full HD. Now you can hack your phone to more than triple the bitrate.

First root your phone
http://www.droidviews.com/root-att-and-verizon-galaxy-s5-without-voiding...

LG G3 Hack
http://www.droidviews.com/jishnus-camera-mod-for-lg-g3/

Note 3 Hack
http://forum.xda-developers.com/showthread.php?p=49598931

Too Smart Guys' Defcon 22's - T.D. Francis X-Hour Film Contest Entry

Pox and DrPwnsU saw film contest table at Defcon. They had to make a short sci fi film in less then 48 hours with no real budget. See what happen if you over power a Defcon badge.

Find out more on the facebook page
https://www.facebook.com/pages/Defcon-22s-TD-Francis-X-Hour-Film-Contest/

Chef Spaghetti and Pox go to Vidcon to hang out with other Youtubers:

Chris Hardwick Nerdist
https://www.youtube.com/user/NerdistPodcastNet

Epic Meal Time
https://www.youtube.com/user/EpicMealTime

Tobuscus
https://www.youtube.com/user/Tobuscus

AyeEmmVee
https://www.youtube.com/user/AyeEmmVee/videos

Last Life Productions
https://www.youtube.com/channel/UCL11GnH3tB2J9H3pyondtsw

Rhett and Link
https://www.youtube.com/user/RhettandLink

Mystery Guitar man
https://www.youtube.com/user/MysteryGuitarMan