Oral history vs. audio-, visual- or text-based media production
Documenting oral history lets the interview object talk freely without a pre-planned time limit. So oral history documentation can take more than one session. Normally a session can be between 1,5 – 2 hours or less. Another important element is that oral history documentation should not have any other purpose than documenting a history. This element makes oral history different from a journalistic or commercial interview that aims to get a piece of specific information within a time limit. They are normally edited for media production.
On the other hand, oral history is informal and casual audio or video recording of, for instance, a grandmother telling her life story to her grandchildren. Therefore oral history documentation can vary in duration from minutes to hours.