You want to make your videos yourself?
Look after these details and your movie will make a difference
You need a good quality external microphone. Can be low cost, but it has to be fit for the job. You’ll probably want a lavalier microphone. Lavalier microphones come in all sort of price and make. The mic must be really close to the source / the voice. It must be somewhere near the neck or collar of the talent.
But first, listen to the soundscape. Give it a few moments. Ventilation noise, road noise, neighbourhood noise? Sound of the room too resonant? This can guide you to a (more) suitable place. More here
Transmission & recording of sound
By design the camera (smartphone, tablet, computer, DSLR) is located outside of the frame, but the microphone must be very close to the audio source, the voice in our example (hint: for voice, camera sound never is an option). Thus, as your video camera/smartphone will be located a bit away, the question of transmitting the audio signal to it then arises. One simple cost effective example here:
Wireless kit Samson Go Mic Mobile (omni*), all necessary cables and accessories, ready to go.
* Directivity matters
In very quiet environnement, omnidirectionnal mic can be ok. In a noisy situation, go for a cardioid mic. In any case place it as close to the source as possible. More here.
This post is also available in: French