METHOD AND SYSTEM FOR A USER TO MANUALLY ALTER THE QUALITY OF PREVIOUSLY ENCODED VIDEO FRAMES

摘要

A method and system in which a user manually changes the quality of portions of video frames after the frames have been previously encoded. Regions of on e or more frames of video are selected to have an increased quality, a decreas ed quality, or a quality which should not be altered (174). After the regions a re defined by a user, the frames of video is digitally re-encoded and inserted into the digitally encoded data stream in place of the previously encoded da ta (182 and 190). In order to easily remove a previously encoded frame from the data stream and replace it with a newly encoded frame having regions of quality defined by the user, it is preferable to have the newly encoded fram e consume the same number of bits as the previously encoded frame.