PICTURE ENCODING METHOD, PICTURE ENCODING DEVICE AND OPTICAL DISK

摘要

PURPOSE: To vary a GOP structure so as to make a desired frame an intra- frame and to correct a target data amount so as to obtain a desired data amount by performing variable rate encoding in three paths. CONSTITUTION: The video signals of a prescribed time are inputted to a terminal 1 and the encoding circuit 2 of a fixed GOP structure performs the encoding of a first path. A GOP structure setting circuit 4 sets the GOP structure so as to make a scene change frame detected in a scene change detection circuit 3 and a specified entry frame from the terminal 2 a leading intra-frame. The encoding circuit 6 performs the encoding of a second path to the video signals from the terminal 5. In this case, for instance, the data amount for each frame is stored in a storage circuit 7, it is defined as the index of the complication of pictures and a target data amount setting circuit 8 sets the target data amount D2. The encoding circuit 10 performs the encoding of a third path to the video signals from the terminal 9 based on the set amt.