Record Audio during Video Recording Using External Microphone

Hi,

I own Xperia Z2 Phone and i am looking for someone who can assist or suggest me a method to record clear Audio during Video Recording from my phone using an external microphone. I want to record some class room lectures and I do not have a camcorder.

I checked that if I record Audio from the ear phone mic The audio recording is superfine but unfortunately the cable length is very small.

I would appreciate if someone can assist.


I am based in India.


Thanks.