Hope it’s OK to ask for suggestions, having a hard time navigating the app store 
The soundcard I use with my iPad for casual instagram videos is very quiet on the output. Plus the build-in camera doesn’t seem to support stereo on videos with an external USB soundcard.
Does anyone know of a camera app that
- supports recording video with stereo audio
- makes it visible which audiosource (mic or usb) it’s recording from
- allows normalization of audio after recording
- allows some gentle video de-noise filtering
Alternatively I could use filmicpro (ticks 1+2 above) to do the recording, then I would like to know of a video editor that will
- allows normalization of audio after recording
- allows some gentle video de-noise filtering
In any case I’d prefer something simple and “not-too-expensive” 