I tested it. The recording is done in the same device, and the results are simply perfect. Only have issues that my PC does not recognize the format (my device does), but I suppose it must be because I need to upgrade codecs. Have converted it with a video file converter.
Yes, though it seems that he didn't really say these words, it is a legend
It is something I am working at, but still at a very early stage and many things to improve.
Only from kitkat as they say, but very useful to create promotional videos for an app. For this purpose you can always borrow someone's device, the whole process is really fast. I'm going to try with my latest app.