| 摘要 |
An encoding method and apparatus in which, in assigning bits to compressed video data recorded across plural recording areas or layers, bit assignment is evaluated as to whether or not non-permissible difference in picture quality is not produced under given encoding conditions, from one recording area or layer to another, and an optimum condition is presented. The bit assignment is done from one encoding unit to another responsive to the encoding difficulty corrected responsive to the as-changed picture type and the number of bits accorded to the entire encoding material ┌SUPPLY_BYTES┘ and the variation in the assigned quantities to respective recording areas is detected to evaluate whether or not the picture quality difference is allowable. If the picture quality difference is not allowable, a warning is displayed. If the picture quality difference is allowable, the number of the target bits is calculated on the picture basis responsive to the as-corrected encoding difficulty and ┌SUPPLY_BYTES┘ to formulate a control file for an encoder. If encoding is not done under the initial conditions, an optimum value of the quantity of bit assignment is presented. |
