This graphic gives a very good step-by-step for video production. One of the most important things to do when in video production is to plan well: think about lighting, sound, etc. before you start taking the video. This graphic also gives some statistics to illustrate why good video quality is important.
Infographic from NFTS/BFI MOOC on FutureLearn - job roles in the film industry; pre-production- the process of preparing all the elements involved in the film; production- the raw footage for the film is recorded during the film shoot; post-production- the images, sound and visual effects of the film are edited.