web的视频世界,有两个概念非常容易搞混淆,即:视频文件的格式,比如.mp4,.flv,.ogv等等,以及视频本身的格式,就是指的codec算法名称,比如h.264,mpeg-4等. http://websitehelpers.com/video/…

14.8 InnoDB File-Format Management 14.8.1 Enabling File Formats 14.8.2 Verifying File Format Compatibility 14.8.3 Identifying the File Format in Use 14.8.4 Modifying the File Format 随着InnoDB的发展, data files 格式 不兼容以前的InnoDB 版本有时候需要支持新的功能. 为了帮助管理通用型在升级和…

随着InnoDB存储引擎的发展,新的页数据结构有时用来支持新的功能特性.比如前面提到的InnoDB Plugin,提供了新的页数据结构来支持表压缩功能,完全溢出的(Off page)大变长字符类型字段的存储.这些新的页数据结构和之前版本的页并不兼容.因此从InnoDB Plugin版本开始,InnoDB存储引擎通过Named File Formats机制来解决不同版本下页结构兼容性的问题. InnoDB Plugin将之前版本的文件格式(file format)定义为Antelope,将这个版本…

I recently worked on a project to create a “virtual appliance” for one of our customers. They have an server application that they would like to distribute to their customers along with some new devices, and a virtual appliance is a good way to do th…

常见的3D引擎有:Unreal.Quake.Lithtech.OGRE.Nebula.Irrlicht.Truevision3D... 其中开源免费的有:OGRE.irrlicht.fly3d.NeoEngine.revolution3d. Nebula2.Genesis3d等. OGRE 在免费.开源的引擎中评价最高,一个原因是作为一个图形渲染引擎,它支持的图形特性最多,所以渲染质量也不错:另一个原因是设计模式的清晰:另外,速度也不错. OGRE 将专注于向一个纯粹的.然而富于协作和扩展性的图…

.formats (Show Number Formats) .formats命令在当前线程和进程的上下文中计算表达式或符号,并以多种数字格式显示它. .formats expression 参数: expression指定要计算的表达式. 环境: 模式 用户模式下,内核模式 目标 实时. 崩溃转储 平台 全部 计算的表达式以十六进制.十进制.八进制和二进制格式以及单精度和双精度浮点格式显示.当字节对应于标准的ascii字符时,也会显示ascii字符格式.如果表达式在允许的范围内,则它也被解释为…

From OpenSceneGraph-3.0 onwards we have new native file formats based on generic serializers that are extensible and support forward/backward compatibility, there is a .osgt ascii text file format, .osgx xml format and .osgb binary format. The extens…

Read / Write Excel file in Java using Apache POI 2014-04-18 BY DINESH LEAVE A COMMENT About a year or two ago I was working with finance team where they wanted to pull the credit card transactions for all the customer using various combinations. Ex –…

FILE SIGNATURES TABLE 16 December 2017 This table of file signatures (aka "magic numbers") is a continuing work-in-progress. I had found little information on this in a single place, with the exception of the table in Forensic Computing: A Pract…

Accessing Files and Directories Before you can open a file, you first have to locate it in the file system. The system frameworks provide many routines for obtaining references to many well-known directories, such as the Library directory and its con…