quicktime compression

MyISAM using prefix compression to reduce the size of the index, so that more indexes can be put into memory, the default is to compress only the string, but the parameter configuration can also be used to compress integers,myisam the method for compressing each index block is to completely save the first value in the index block, then compare the other values to the first value to get the same number of bytes (length) and the rest of the different s

Tags: Zip tarOne, zip compressionInstall Zip and unzip firstYum Install-y Zip/unzipzip 1.txt.zip 1.txtCompressed file 1.txt, compressed filename is called 1.txt.zip zip -r 123.zip 123/Compressed folder 123/specified name 123.zip unzip 1.txt.zipThe zip file does not delete the source file and will prompt you to overwrite the existing file when extracting it.Unzip the 123.zip file into the/root/456/directory unzip -l 123.zipView a list of files in compressed file 123.zipIi. Tar Packaging toolsTh

= BitmapFactory.decodeFile(Environment .getExternalStorageDirectory().getAbsolutePath() "/DCIM/Camera/test.jpg"); Log.i("wechat""压缩前图片的大小" + (bit.getByteCount10241024) "M宽度为" + bit.getWidth"高度为" + bit.getHeight());The log that came out is:Will get the bitmap to compress, the following begins to say, bitmap several compression ways.1. Quality compressionBytearrayoutputstream BAOs = new Bytearrayoutpu

Two methods for enabling gzip compression in PHP and two methods for phpgzip compression. Two methods for enabling gzip compression in PHP: phpgzip compression for two types of web pages, after enabling gzip compression, the size can be reduced by 20% ~ 90%, which can save a

Linux compression and decompression commands, linux compression and decompression . TarUnpack: tar xvf FileName.tarPackage: tar cvf FileName.tar DirName(Note: tar is packed, not compressed !)---------------. GzDecompress 1: gunzip FileName.gzDecompress 2: gzip-d FileName.gzCompression: gzip FileName .Tar.gz and. tgzDecompress: tar zxvf FileName.tar.gzCompression: tar zcvf FileName.tar.gz DirName------------

Linux shell compression and decompression commands, shell compression and decompression . TarUnpack: tar xvf FileName.tarPackage: tar cvf FileName.tar DirName(Note: tar is packed, not compressed !)---------------. GzDecompress 1: gunzip FileName.gzDecompress 2: gzip-d FileName.gzCompression: gzip FileName.Tar.gz and. tgzDecompress: tar zxvf FileName.tar.gzCompression: tar zcvf FileName.tar.gz DirName-------

Anatomy of SQL Server 13th integers storage format in row compression and page compression (translated)http://improve.dk/the-anatomy-of-row-amp-page-compressed-integers/When resolving orcamdf support for row compression, the view has encountered some challenges when parsing integers.Unlike normal uncompressed integer storage, these are variable lengths-meaning th

at the maximum compression rate Zopfli output file than zlib small 3% to 8%,google think Zopfli represents the most advanced deflate compatible compression algorithm, it is written in C language, Easy to transplant. But Zopfli's flaw is that the CPU processing time required is 2 to 3 data levels higher than zlib, so it is more suitable for applications that compress multiple transmissions at a time, such as

After I start compressing ob_start ( #039; ob_gzhandler #039;), I write the content of ob_get_contents to the file, but the content in the file is plain text, the string data is not compressed. Does it mean that this compression process is executed when the S end sends data to the c end? That is, to press the data... after enabling compression ob_start ('ob _ gzhandler'), I write the content of ob_get_cont

The king of the latest compression ratio for xz CompressionThere may be many strangers to this compression tool in xz Z, but you know that xz Z is a default compression tool for most Linux systems.There have been few features in Tibet before, so there is almost nothing to mention.I saw this compression format when down

Use grunt to lossless image compression, grunt Lossless Image Compression As a front-end engineer or web Development Engineer, pictures are something you cannot ignore. No book on optimization won't mention picture optimization. In pagespeed, the first thing to do is to prompt you to optimize your images. I have tried many times before to process png images. You can view previous blogs: optimizing the histo

Image compression and cache efficient loading to avoid oom summary, image compression oom Efficient loading of large images Check the maximum available memory for each application: int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024); Log.d("TAG", "Max memory is " + maxMemory + "KB"); The BitmapFactory class provides multiple parsing methods (decodeByteArray, decodeFile, decodeResource, etc.)

I. Common compression commands　In Linux, the zip file has the following extension:Gz:gzip compressionBZ2:BZIP2 compression.Tar.:tar program packaged data, no compressionTar.gz:tar is packaged and compressed by gzip.Tar.bz2:tar packaged and compressed by bzip2(Note that the extensions in Linux are not related to file attributes, just to keep us in mind.)BZIP2 is better than gzip compression, these two

:[Marco.chan@linuxhobby backup]$ lsSkype_backup[Marco.chan@linuxhobby backup]$ tar -czvp-f skype_backup. Tar. GZ skype_backupThe middle packing compression output process omits ...Skype_backup/marco.chan.skype/chat512.dbbSkype_backup/marco.chan.skype/user4096.dbbSkype_backup/marco.chan.skype/chatmsg256.dbbSkype_backup/shared.xmlSkype_backup/shared.lck[Marco.chan@linuxhobby backup]$ lsSkype_backup. tar. GZ skype_backup Because the "-V" parameter is

Gzip compression is a common HTTP compression algorithm that can compress html,javascript,css and even dynamic file Php,dll. This reduces the amount of data transferred between the server and the browser, thus submitting the site access speed and increasing the burden on some servers.A Environmental requirementsHere we are using Windows Server 2003 and IIS6, IIS7 the default to open gzip, just simple config

As mentioned earlier, the suffix name in Linux has no special meaning, it is generally used as the identity of different file types. The following is a description of the suffix associated with packaging and compression:*.z:compress Program zip file*.gz:gzip Program zip file*.BZ2:BZIP2 Compressed Files*.tar:tar packaged, uncompressed*.tar.gz:tar packaged, Gzip compressed*.tar.bz2:tar packaged, bzip2 compressedFiles that are typically packaged or compr

The cause of the problem: Responsible for the company's Development platform research and development, consider the protection of intellectual property, must consider the Java encryption technology and JS script encryption technology. In the current Java encryption is easy to crack the case, or the first to get JS encryption and compression, on the one hand can improve the performance of the page load, on the other hand also hope that the results of h

Linux Study Notes (7) common Linux commands: compression and decompression commands, learning notes compression and decompression(1) gzip The gzip command is used to compress files. The original English meaning is GNU zip. The path is/bin/gzip. The syntax format is as follows: Gzip [file] The file format is .gz. For example, copy the services file under the/etc directory to the/tmp directory and compress it

Notes for AngularJs compression and AngularJs CompressionAngularJS uses the parameter name of the controller constructor to infer the dependent service name. Therefore, if you want to compress the Controller's JS Code, all its parameters will be compressed at the same time. At this time, the dependency injection system cannot correctly identify the service.Assume that the name of our Controller is BookCtrl, and the code before

Decompress the 7Zip special compression algorithm file and the 7zip Compression Algorithm in the Java project.1. Problem DescriptionJava Web backend downloads a zip file compressed by a special algorithm. Because java itself cannot be used to decompress the file, you must use 7Zip to decompress the file. Therefore, this article mentioned the problem of calling external 7zip exe on the java web backend to de