Which term is used to describe the technique of optimizing video quality by eliminating unnecessary data between frames?

The technique described in the question is temporal compression. This method specifically focuses on optimizing video quality by removing redundant information between consecutive frames. In video compression, there is often a significant amount of repetitive data, as frames may change only slightly from one to the next. Temporal compression takes advantage of this by analyzing differences between frames and storing only the changes, which can significantly reduce the amount of data required for video storage and transmission while maintaining visual quality.

This efficiency not only improves the overall quality of the video but also helps in reducing bandwidth usage, making it easier to stream or transmit video content over networks. The other terms listed do not specifically capture this method; for example, data compression is a broader term that includes various techniques, and bandwidth optimization refers to techniques aimed at maximizing the amount of data that can be transferred over a network. Quality enhancement typically relates to improving the visual attributes of a video rather than reducing its data size.