Title combined with their own practical experience, talk about how to do the selection of documentary?

Material and theme are two concepts we need to care about when choosing a documentary topic. Where material is the raw unprocessed material, which may be a true story, such as various real people and events that really happened in the actual life. Theme is the reproduction of the main storyline of a documentary under the camera image, the final product chosen and refined through the creator's thinking and judgment. Often, it is a difficult selection and decision-making process from the material to the presentation of the theme of the work. In this process, the creator needs to reshape the storyline according to his or her own life experience, life experience, combined with the professional knowledge and cultural literacy that he or she has learned, so that it can become a vehicle to express his or her own life concepts and understanding. Therefore, the transformed material has transcended its original appearance, and this transformation is an artistic process carefully considered by the creators themselves.