演播室节目 meaning in Chinese
studio program
Examples
- 2 , under equally see the quantity , compress the calculate way s exportation code plain deal connect the good and bad that decide its function of the good and bad , or say , output the code the term of same alike rate the bottom , and the portrait quantity reflected the function of the compression calculate way . adopt with dv all because of the m - jpeg an inside compress the way , efficiency of their compression certainly want lower than mpeg2 . certainly , this is an average circumstance , at the time that low code rate , the mpeg2 can compare the m - jpeg compression the ratio high and a lot of but keep the good diagram to resemble the quantity ; but at request the diagram to resemble the quantity the good time for example the sow the room program edit with empress period creation , their difference to is not very big . too is to say , just at the compression efficiency that not emphasize the portrait quantity that the circumstance , mpeg2 is high
2在同样的视频质量下，压缩算法的输出码率直接决定其性能的优劣，或者说，输出码率相同的条件下，图象质量的优劣反映了压缩算法的性能。由于m - jpeg和dv都是采用帧内压缩方式，它们的压缩效率当然要比mpeg2低。当然，这是一个平均情况，在低码率的时候， mpeg2可以比m - jpeg的压缩比高很多而保持较好的图像质量而在要求图像质量很好的时候比如演播室节目编辑和后期制作，它们的差别不是很大。