对于USB外置刻录机/光驱，远程桌面无法正常识别(例如提示找不到此格式的光盘)，需要启用以下设置才能使用：
1.打开组策略管理器
2.计算机配置->管理模板->系统->可移动存储访问->所有可移动存储: 允许在远程会话中直接访问->已启用。
1.打开组策略管理器
2.计算机配置->管理模板->系统->可移动存储访问->所有可移动存储: 允许在远程会话中直接访问->已启用。
引用:
1. Sample Aspect Ratio
* What is it?
The Sample Aspect Ratio (SAR) (sometimes called Pixel Aspect Ratio or just
Pel Aspect Ratio) is defined as the ratio of the width of the sample to the
height of the sample. While pixels on a computer monitor generally are
"square" meaning that their SAR is 1:1, digitized video usually has rather
odd SARs. Playback of material with a particular SAR on a system with
a different SAR will result in a stretched/squashed image. A correction is
necessary that relies on the knowledge of both SARs.
* How do I use it?
You can derive the SAR of an image from the width, height and the
display aspect ratio (DAR) of the image as follows:
SAR_x DAR_x * height
-------- = --------------------
SAR_y DAR_y * width
for example:
width x height = 704x576, DAR = 4:3 ==> SAR = 2304:2112 or 12:11
Please note that if your material is a digitized analog signal, you should
not use this equation to calculate the SAR.
* Should I use this option?
In one word: yes. Most decoders/ media players nowadays support automatic
correction of aspect ratios, and there are just few exceptions. You should
even use it, if the SAR of your material is 1:1, as the default of x264 is
"SAR not defined".
1. Sample Aspect Ratio
* What is it?
The Sample Aspect Ratio (SAR) (sometimes called Pixel Aspect Ratio or just
Pel Aspect Ratio) is defined as the ratio of the width of the sample to the
height of the sample. While pixels on a computer monitor generally are
"square" meaning that their SAR is 1:1, digitized video usually has rather
odd SARs. Playback of material with a particular SAR on a system with
a different SAR will result in a stretched/squashed image. A correction is
necessary that relies on the knowledge of both SARs.
* How do I use it?
You can derive the SAR of an image from the width, height and the
display aspect ratio (DAR) of the image as follows:
SAR_x DAR_x * height
-------- = --------------------
SAR_y DAR_y * width
for example:
width x height = 704x576, DAR = 4:3 ==> SAR = 2304:2112 or 12:11
Please note that if your material is a digitized analog signal, you should
not use this equation to calculate the SAR.
* Should I use this option?
In one word: yes. Most decoders/ media players nowadays support automatic
correction of aspect ratios, and there are just few exceptions. You should
even use it, if the SAR of your material is 1:1, as the default of x264 is
"SAR not defined".
首先科普下何为DVDRIP，所谓DVDRIP，就是以DVD为片源，通过各种编码压制后，便于播放存储的文件。很多时候你在网上下载到的DVDISO镜像文件，你还要蛋疼的装各种虚拟光驱软件载入播放，非常的不便，DVDRIP就应运而生了。现在主流的编码都是x264，封装格式大多是MKV及MP4。DVDRIP的目标是尽量还原片源的质量，并且在容量上缩小体积，而且有良好的通用性。
可是DVD是给电视看的，跟电脑上的分辨率有很大差异，你可能会说我电脑播DVDISO一切正常，那是因为处理分辨率的问题都给播放器处理了，但如果要自己DVDRIP，播放器可不会帮你的，因此需要对视频的分辨率比例进行手动修正来适应电脑，这就是本文主要说的东西。
这里谈及的DVD片源都是NTSC制式。现在的主流基本都是1280x720、1920x1080等16:9的分辨率，因此这里就不说有关4:3的了，有兴趣的朋友可以移步这里。
先说说一个重要的概念，AE（Aspect Error），可以理解为屏幕比误差值，任何东西都不是完美的，DVDRIP也是，修正的过程，无论如何都会出现损耗误差（如果电视电脑标准一样就好了），这就是AE，越接近0，也就越“完美”，AE计算非常高深，这里也就不谈了。
可是DVD是给电视看的，跟电脑上的分辨率有很大差异，你可能会说我电脑播DVDISO一切正常，那是因为处理分辨率的问题都给播放器处理了，但如果要自己DVDRIP，播放器可不会帮你的，因此需要对视频的分辨率比例进行手动修正来适应电脑，这就是本文主要说的东西。
这里谈及的DVD片源都是NTSC制式。现在的主流基本都是1280x720、1920x1080等16:9的分辨率，因此这里就不说有关4:3的了，有兴趣的朋友可以移步这里。
先说说一个重要的概念，AE（Aspect Error），可以理解为屏幕比误差值，任何东西都不是完美的，DVDRIP也是，修正的过程，无论如何都会出现损耗误差（如果电视电脑标准一样就好了），这就是AE，越接近0，也就越“完美”，AE计算非常高深，这里也就不谈了。
如果出现提示无法打开设备 (88890020)，把缓冲设置到500毫秒或以下就可以用了。
