precomp-cpp
mcm
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precomp-cpp | mcm | |
---|---|---|
14 | 5 | |
383 | 100 | |
- | - | |
0.0 | 0.0 | |
about 1 month ago | over 6 years ago | |
C | C++ | |
Apache License 2.0 | GNU General Public License v3.0 only |
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precomp-cpp
- Any suggestion for compressing a large batch of photos and videos into a single zip?
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Putting 5,998,794 books on IPFS
You can also have a look at this packer. It compresses PDF and EPUB 2-3 times smaller than 7z at maximum settings, at half the speed. I keep all my books in it and never had a problem.
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AWS switch from gzip to zstd – about 30% reduction in compressed S3 storage
There are tools like preflate [1] or precomp [2] that guarantees a bitwise identical reconstruction, of course modulo bugs.
[1] https://github.com/deus-libri/preflate
[2] https://github.com/schnaader/precomp-cpp/ (which internally makes use of preflate)
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Is there any research as to what's the best way to compress each file type?
Precomp http://schnaader.info/precomp.php is a program which will seek compressed parts and decompress those parts in order to compress with another algorithm. This greatly improve compression ratio with the other algorithm.
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Attempting to re-create / replicate an archive made years ago with an unknown application, which is no longer complete on a file-sharing network
https://github.com/schnaader/precomp-cpp Maybe some tools posted in https://encode.su/threads/1399-reflate-a-new-universal-deflate-recompressor Maybe something has to be developed specifically for your task.
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7-Zip 21.0 alpha introduces native Linux support
While we are at it, there is precomp, specifically created to compress files that are internally a zip archive themselves (odt, docx, pdf, epub, etc. etc.).
- Help me out with some compression tips
mcm
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In need of crazy compression
mcm 0.83 : https://github.com/mathieuchartier/mcm/tree/v0.83
- Is there any research as to what's the best way to compress each file type?
- Don't Use RAR
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Help me out with some compression tips
A good trade-off is mcm : it uses SSE2 and MMX. It is not as good as zpaq, but it is better than LZMA2 (7zip) and really faster than zpaq. https://github.com/mathieuchartier/mcm
What are some alternatives?
PDF-Writer - High performance library for creating, modiyfing and parsing PDF files in C++
p7zip - A new p7zip fork with additional codecs and improvements (forked from https://sourceforge.net/projects/sevenzip/ AND https://sourceforge.net/projects/p7zip/).
clawPDF - Open Source Virtual (Network) Printer for Windows that allows you to create PDFs, OCR text, and print images, with advanced features usually available only in enterprise solutions.
xdelta - open-source binary diff, delta/differential compression tools, VCDIFF/RFC 3284 delta compression
libharu - libharu - free PDF library
fast-lzma2 - Fast LZMA2 Library
pixz - Parallel, indexed xz compressor
notepadqq - A simple, general-purpose editor for Linux
qpdf-rs - Rust bindings for QPDF C++ library
flameshot - Powerful yet simple to use screenshot software :desktop_computer: :camera_flash:
srep - Source for srep from the FreeArc project. This is not my code, I am merely uploading it for preservation purposes.
par2cmdline - Official repo for par2cmdline and libpar2