precomp-cpp
mcm
| precomp-cpp | mcm | |
|---|---|---|
| 14 | 5 | |
| 391 | 105 | |
| - | - | |
| 0.0 | 0.0 | |
| 3 months ago | over 6 years ago | |
| C | C++ | |
| Apache License 2.0 | GNU General Public License v3.0 only |
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precomp-cpp
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Does epub compress well?
You should look at Precomp - an apparently abandoned, but awesomely working arhiver that is dedicated to compressing those ZIP-based formats, and compresses them twice-thrice as small as LZMA2 can.
- Any suggestion for compressing a large batch of photos and videos into a single zip?
- Compression for Documents
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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.
- .bin compression
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libgen currently adds around 1,300 books a day
There is an opensource archiver called precomp that is designed specifically for e-documents and compresses them 2-3 times smaller than 7z in ultra mode. It works, and I keep my e-books in it. However, it seems nobody else does, and development has stopped due to lack of interest.
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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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Which compression method for archiving OS ISOs?
You may use "precomp" in order to seek and uncompress those parts. Then you can use a better compression algorithm : http://schnaader.info/precomp.php
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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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How can I perfectly recreate a PNG losslessly compressed to JXL?
This may be of help. (a255854 and d649919)
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
- Is 7zip with lzma2 the best tradeoff between compression speed and decompression speed?
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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++
fast-lzma2 - Fast LZMA2 Library
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.
srep - Source for srep from the FreeArc project. This is not my code, I am merely uploading it for preservation purposes.
p7zip - A new p7zip fork with additional codecs and improvements (forked from https://sourceforge.net/projects/sevenzip/ AND https://sourceforge.net/projects/p7zip/).
reedsolomon - Reed-Solomon Erasure Coding in Go
xdelta - open-source binary diff, delta/differential compression tools, VCDIFF/RFC 3284 delta compression
bzip3 - A better and stronger spiritual successor to BZip2.
qpdf-rs - Rust bindings for QPDF C++ library
par2cmdline - Official repo for par2cmdline and libpar2
libharu - libharu - free PDF library
flac - Free Lossless Audio Codec