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[请教]关于国产自主知识产权的AVS
idear@2006-08-12 14:33
最近看见了这么一个消息，不知道谁知道这是一个什么东西啊，和字幕组平时说的AVS又有什么关联？
关于“数字音视频编解码技术标准工作组” （简称AVS工作组）
数字音视频编解码技术标准工作组由国家信息产业部科学技术司于2002年6月批准成立。工作组的任务是：面向我国的信息产业需求，联合国内企业和科研机构，制（修）订数字音视频的压缩、解压缩、处理和表示等共性技术标准，为数字音视频设备与系统提供高效经济的编解码技术，服务于高分辨率数字广播、高密度激光数字存储媒体、无线宽带多媒体通讯、互联网宽带流媒体等重大信息产业应用。
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adamhj@2006-08-12 15:49
没有关系
大虾@2006-08-12 16:14
建议楼主去看看doom9论坛里面大家都是怎么骂这个AVS的……
估计要是方某人来调查的话，就是又一个麒麟事件。
天地逍遥@2006-08-12 17:09
引用
最初由 大虾 发布
建议楼主去看看doom9论坛里面大家都是怎么骂这个AVS的……
估计要是方某人来调查的话，就是又一个麒麟事件。
能大致介绍一下吗？英文不好的说……
雷鸣@2006-08-12 17:59
丢个连接
http://forum.doom9.org/showthread.php?t=107664
天地逍遥@2006-08-12 19:00
videomixer9 的发言，感觉是不是太过激动了：
What do I have from Chinese stealing our stuff producing it cheaper themselves, only unemployment here at our cost. And western companies are pretty pissed off doing buisness with chinese. The general opinion about China is deep down below, they only want their cheap work and their money, the stealing of technology pisses them plenty, and they'll only look away for the time they can still make profits without too much loses by cheap copies. But international pressure on China. Honestly I wish China the worst possible, their stuff is only cheap cause it's pirated, they enslave their workers and they disregard anything about ecology.
China is just a big fat country full of assholes without innovations that just copy anything and use the large market to pressure companies to get their stuff stolen for some profits, this will end pretty soon when Chinese stole the last things too and produce it as copies and noone will buy originals anymore. Not even talking about all the communist bullshit.
Copycats may rot in hell. The Chinese copy everything policy pisses me off enough, only bunch of losers need to copy. But in China they seem to not even see that when you kill off profits for innovating companies, you cannot copy them anymore and your all so smart "let others innovate and copy it for free" concept will not work anymore. Of course all the chinese companies that don't need to pay for research produce cheapass with their slaves working in factories that do not need to fulfill strict regulations as in the civilized world. Only thing they do is to kill everything the workforce in Europe and the US fought for by doing cheap work. But most Chinese I know are selfish assholes anyways and here at university are plenty of them. Their english sucks ass, they behave like arrogant asses in general.
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
个人比较同意stefang的观点：
But back to the AVS standard: It is a public standard and companies holding patents that are used in this standard are involved in licensing talks. That includes all non-Chinese companies, and looking at http://www.avs.org.cn/en/membership.asp you can see companies like Intel and Philips among others. Apart from that, patents involved in video coding are software/algorithm patents anyway, which have often shown to hinder innovation (like the JPEG-patent or the one-click-buy, see http://www.nosoftwarepatents.com for better examples). True, there is a lot of technology in AVS that also can be found in other standards (mainly AVC), but the same patent holders get rewarded for this, only by another licensing body. The claim that the MPEG LA would put the money back in research and innovation is not true. They only distribute the money back to the patent holders, what they do with it is up to them. Same goes for the AVS consortium.
wolfsoft@2006-08-12 19:16
What do I have from Chinese stealing our stuff producing it cheaper themselves, only unemployment here at our cost. And western companies are pretty pissed off doing buisness with chinese. The general opinion about China is deep down below, they only want their cheap work and their money, the stealing of technology pisses them plenty, and they'll only look away for the time they can still make profits without too much loses by cheap copies. But international pressure on China. Honestly I wish China the worst possible, their stuff is only cheap cause it's pirated, they enslave their workers and they disregard anything about ecology. <====靠,满篇的cheap.有什么嫉妒的?他要肯容忍公司开给自己100$/月的工资,他们美国也能做出很cheap的东西来
雷鸣@2006-08-12 20:07
劳动力廉价么[/han]
idear@2006-08-12 21:17
引用
最初由 大虾 发布
建议楼主去看看doom9论坛里面大家都是怎么骂这个AVS的……
估计要是方某人来调查的话，就是又一个麒麟事件。
什么是麒麟事件？
idear@2006-08-12 21:23
不过，这个所谓的“国产”东西，究竟好不好啊。
天地逍遥@2006-08-12 21:39
引用
最初由 idear 发布
不过，这个所谓的“国产”东西，究竟好不好啊。
反正看其描述是很先进的～
关键在于能否推广应用，否则又将是一个“EVD”……
neogalaxy@2006-08-13 12:37
引用
最初由 stefang @ doom9 发布
"Simplified dequantization": State-of-the-art encoders of other formats have the feature "trellis quantization". For each coefficient, they search for the optimum value in terms of rate-distortion, knowing how the decoder will dequantize it. If you already do that effort, what is the point of having a complicated dequantization on the decoder side? So in AVS, there are no matrices for dequantization. Each coefficient is scaled up the same way, which makes it easier for optimizations. All the cleverness has to be on the encoder side.
貌似可以降低解码时的CPU占用?
However, 画质就不知道了.(不是说上面那段,是说其他方面,我懒得接着读了[/han] )
kykdu@2006-08-15 18:45
AVS不如H264的地方：
不支持CABAC
B帧、参考帧最多只有2帧
不支持8×8以下宏块
只能编码一个前向运动矢量，后向运动由前向导出。
只有5种亮度预测模式，H264有9种
像素滤波只有4重，H264为6重
不支持复杂的宏块，只有简单的条带划分机制
AVS的技术，目前的H264都可以支持。比如8×8整数变换、环内滤波、时域空域结合动态预测等。
AVS目前的性能：在60%的情况下，AVS的编码效率能够达到MPEG-2的两倍（自称），在B帧、参考帧都只开2帧时，大致与JM6.1的main profile相当（目前JM版本为10.2）
资料来源：AVS 视频压缩质量主观评价（AVS参考软件 5.2 版）测试报告. 2005年 9 月
realsweet@2006-08-16 08:25
终于也在DOOM9看见满口粗话的强文了XD
伟大的共和国的编码工程师们
原来并非白手起家
个个都是裸奔出身啊[/TX]
Boss_02fj@2006-08-17 00:32
囧，听说doom9是满文明的地方啊...有某朋友有偶尔逛...好2年没见，消息过时?[/KH]
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