The document discusses color-based video retrieval using block and global methods. It summarizes that color features are widely used in video retrieval and content analysis. It describes extracting color histograms globally and from divided blocks. Two methods are discussed: global color extracts overall color frequency while block color quantizes each divided region, maintaining some spatial data. Videos are retrieved by comparing feature vectors of queries to those in a database using distance metrics like Euclidean distance. MATLAB is used to implement the color feature extraction and retrieval methods.