It is impossible to write a good summary of any type of information unless you have first read or watched the whole text, video or performance. In order to write a summary, you need to be familiar will all the main ideas of the work. You also need to be familiar with the details, as you need to decide which details are worth including in your summary. A summary is a useful tool when we want to be able to recall the important points of a work later on.
Evaluating the information in a video could be challenging, particularly when looking for particular data is needed. The final step in the evaluation is summarizing ideas, which comes after all the valuable information is gathered and analyzed. The summarized ideas should be clearly stated and by of high relevance for the theme of the video, therefore it is important to write them at the end once the analysis has been completed.