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2. RAR (file format) - Wikipedia

   en.wikipedia.org/wiki/RAR_(file_format)

   1.5 – changes are not known. 2.0 – released with WinRAR 2.0 and Rar for MS-DOS 2.0; features the following changes: Multimedia compression for true color bitmap images and uncompressed audio. Up to 1 MB compression dictionary. Introduces archives data recovery protection record. 2.9 [note 1] – released in WinRAR version 3.00. Feature ...

3. Brotli - Wikipedia

   en.wikipedia.org/wiki/Brotli

   Brotli's new file format allows its authors to improve upon Deflate by several algorithmic and format-level improvements: the use of context models for literals and copy distances, describing copy distances through past distances, use of move-to-front queue in entropy code selection, joint-entropy coding of literal and copy lengths, the use of graph algorithms in block splitting, and a larger ...

4. zstd - Wikipedia

   en.wikipedia.org/wiki/Zstd

   Zstd at its maximum compression level gives a compression ratio close to lzma, lzham, and ppmx, and performs better [vague] than lza or bzip2. [ improper synthesis? ] [ 8 ] [ 9 ] Zstandard reaches the current Pareto frontier , as it decompresses faster than any other currently available algorithm with similar or better compression ratio.

5. Data compression ratio - Wikipedia

   en.wikipedia.org/wiki/Data_compression_ratio

   Download as PDF; Printable version; In other projects ... storage size of a file from 10 MB to 2 MB yields a space saving of 1 - 2/10 = 0.8, often notated as a ...

6. Audio coding format - Wikipedia

   en.wikipedia.org/wiki/Audio_coding_format

   An audio coding format [1] (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files). Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus.

7. Virtual memory compression - Wikipedia

   en.wikipedia.org/wiki/Virtual_memory_compression

   Virtual memory compression (also referred to as RAM compression and memory compression) is a memory management technique that utilizes data compression to reduce the size or number of paging requests to and from the auxiliary storage. [1] In a virtual memory compression system, pages to be paged out of virtual memory are compressed and stored ...