[thuythumattrang]

I would to Record HD Video Gameplay and Upload to YouTube, my device is ip 6, ios 8

[knottyrope]

better off going to apple forums, this place is dead and only a few hard core BB users come here

[tsac]

If you asking how to record while playing on the phone to a video on the phone at the same time. it cannot be done. You will need to record from a different device.
think about it, the phone is running one app at a time with the level of IOS you have.
The new IOS on a new I-Phone 6 can do multiple apps at one time but may still not do what you want from the phone only.

[barrackjobs]

Display Recorder iOS 8 if jailbroken