『漫游』酷论坛>『影音数码技术学习交流』>[请教]关于TVRIP与DVDRIP
[请教]关于TVRIP与DVDRIP
苍穹的修罗@2006-12-10 05:13
(1)同是DVDrip的RMVB与AVI或MKV有何区别;
(2)同是TVrip的RMVB与AVI或MKV有何区别;
(3)TVrip的AVI或MKV与DVDrip的RMVB相比,哪个质量较好;
(4)为什么有时候同一部动画的DVDrip集与集之间的容量会相差甚远(100M左右),是否其中掺杂了TVrip的;
(5)除了凭眼睛主观地测定,还有什么更为客观的方法可以测定视频的质量.
实在抱歉,我不会说什么好话,请不要误会我没有诚意.
h2o2shadow@2006-12-10 05:47
(1)同是DVDrip的RMVB与AVI或MKV有何区别;
编码不同
(2)同是TVrip的RMVB与AVI或MKV有何区别;
同上
(3)TVrip的AVI或MKV与DVDrip的RMVB相比,哪个质量较好;
看内嵌功力和滤镜应用
(4)为什么有时候同一部动画的DVDrip集与集之间的容量会相差甚远(100M左右),是否其中掺杂了TVrip的;
1pass 或是CQ压的, 当然大小差异大.
(5)除了凭眼睛主观地测定,还有什么更为客观的方法可以测定视频的质量.
实在抱歉,我不会说什么好话,请不要误会我没有诚意.
用gspot去看质量, 其实我也是目测派
暗影翔@2006-12-10 23:03
好东西就要看mkv，或者DVD。
其余的么，rmvb。
不败的魔术师@2006-12-10 23:38
樓上的...
MKV怎麽和DVD並列了 概念不同把...
GOD_HIKARU MK2@2006-12-11 00:00
= =
好吧。有爱的话直接买DVD看吧 那个绝对好
至于DVDRIP的话就要看压得那个人了。
wolfsoft@2006-12-11 12:30
楼上说错了.有米的应该去烧锅,直接看HDTV的说......
欲多舔光 @2006-12-11 15:34
锅美:o
shinjico@2006-12-11 15:47
惊....锅可以收到HDTV?? 那种数据流量微波通讯怎么也不够的吧....
feelingmtg@2006-12-11 17:37
引用
最初由 shinjico 发布
惊....锅可以收到HDTV?? 那种数据流量微波通讯怎么也不够的吧....
shinjico错了
锅可以收
《电视制作技术》上有讲
还可以找某期的《数码xxxxx》（微型计算机附属杂志）
上面有详细的安锅教程
话说锅可能实现在大陆最便宜方便的HDTV观赏装置
FalconIA@2006-12-12 11:34
话说与卫星通讯除了锅还有其他什么东西吗?
wolfsoft@2006-12-12 12:57
引用
最初由 shinjico 发布
惊....锅可以收到HDTV?? 那种数据流量微波通讯怎么也不够的吧....
土了吧嘿嘿，锅可比CABLE牛B啊
On a satellite, we have a number of so-called transponders. Those are circuits that receive the signal from the earth, modulate, amplify and re-transmit it back to the earth. There are about 20 - 30 transponders on a single satellite, and each has a bandwidth between 27 and 72 MHz (most transponders use 36 MHz, which offers about 38 Mbit/s). A TV channel occupies only a fraction of this bandwidth (how much?) and bitrate (many DVB channels use a lower bitrate than DVD, so the average is below 5 MBit/s), which allows for a number of channels on a single transponder. Most satellites also carry digital radio, which of course uses a lot less bandwidth. The signal sent back to earth using QPSK modulation. This means, a single transmitted symbol contains two bits, and every symbol has the same amplitued and is 90° apart from the next.
On a cable network, the available channel bandwidth is smaller (8 MHz), and the modulation scheme used is 64QAM. As one symbol can have 64 values rather than only 4 as in DVB-S, more information can be transported per symbol, which leads to the same available bitrate per channel (38MBit/s). 64QAM is more complex to decode and more error-prone, but since the signal quality is better than when receiving from a satellite (keep in mind that the distance from the satellite to your dish is huge), you're still likely to get a less distorted signal.
nicholas30@2006-12-12 13:40
狼叔那2段文章沒看仔細...
最後的結論是cable的訊號質量比衛星要好
wolfsoft@2006-12-12 16:58
我只是回复他“数据流量”的质疑。信号质量跟数据流量是两码事。带宽是硬指标。当然如果DVB-S也用64QAM也是可以，但显然没意义嘿
shinjico@2006-12-12 17:12
OTL 偶要去贿赂广电局..... 唉，物业不给安咋办........
老啊哥@2006-12-12 17:16
引用
最初由 wolfsoft 发布
楼上说错了.有米的应该去烧锅,直接看HDTV的说......
[/han] 地面卫星接收站的数据量肯定够...
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