Method and device for analyzing data

A method for analyzing data, comprising:

• judging whether read of each multiplexing block in a media unit has been finished according to a total length of the media unit and a length of the multiplexing block when reading multiplexing blocks included in the media unit;
• wherein the media unit is a video unit, an audio unit or a data unit;
• wherein, said judging whether read of each multiplexing block in a media unit has been finished specifically comprises:
• subtracting the length of the multiplexing block from the total length of the media unit, wherein the media unit has been analyzed completely if a residual value is 0;
• the media unit has not been analyzed completely yet and needs to be analyzed continuously if the residual value is greater than the length of a multiplexing block header of the multiplexing block;
• the media unit has error analysis if the residual value is smaller than or equal to the length of the multiplexing block header of the multiplexing block, ending.