METHOD AND APPARATUS FOR ENCODING VIDEO, METHOD AND APPARATUS FOR ALLOCATING VIDEO CODING QUANTITY, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To solve the problem that the picture quality degrades at official encoding with a conventional 2-pass encoder because the sufficient bit allocation information is not acquired at the first encoding and further the first encoding is not properly interlocked with the code quantity allocation. SOLUTION: Related to a video encoder 101 for preliminary encoding, a quantization width generator 20 selects a quantization width at random, based on the parameter for selecting quantization width which is set at a parameter setting means 21, and outputs it to a quantizer 151. The quantizer 151 quantifies according to the quantization width outputted from the quantization width generator 20. The video encoder outputs the quantization result to a video code quantity allocating device 30 as coding information 191. The video code quantity allocating device 30 allocates the target code quantity to a video encoder for official coding based on the coding information 191. The video encoder for official coding encodes according to the target code quantity.