I stole the following text from the internet.
Maybe the information is useful to fulfill your wishes.
"I would highly recommend getting a third-party app, as the apps that come with the phone are pretty basic. Important things to look for in an app are the ability to: 1) adjust gain levels; 2) change sampling rates; 3) display the recording levels on the screen, so you can make any adjustments necessary; and, perhaps not as important, 4) save the files to multiple formats (at least .wav and .mp3)."
You'll need to merge sounds and vision afterwards.
In my opinion a smartphone is perfect for snapshots as well as for video in average life situations.
In situations where you need really good quality you should use a unit designed for those situations.
You can't race with a family car, can you?
