CPC Class H04N

Systems and methods for summarizing captions, configuring playback speed, and rewriting the caption file for a media asset are disclosed. The system determines whether to display the original captions or a summarized version of the captions, which are based on user's language proficiency level, reading pace, and historical data, and can be generated either on-demand or automatically when rewinds and pauses are detected. The caption file which includes the original captions can be rewritten. The system determines whether to stream a caption or a rewritten file to a media device based on user or system selections. In the absence of a caption file, or when the caption file cannot be summarized, the playback speed of the media asset is slowed down to provide additional reading time to the user.

The present disclosure describes techniques of storing and accessing multimedia files. The techniques comprise obtaining at least two multimedia files; performing format parsing for each of the at least two multimedia files separately to obtain audio encoding data, video encoding data, and container format data of each of the at least two multimedia files; storing the container format data of each of the at least two multimedia files separately, and storing one copy of the audio encoding data and video encoding data; and generating and storing index data comprising information of identifying encoding offset of the container format data, the audio encoding data, and the video encoding data in each of the at least two multimedia files, and comprising information indicative of storage address of the container format data, the audio encoding data, and the video encoding data of each of the at least two multimedia files.