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Poor compression ratio using default compression method #291

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narinishi opened this issue Jan 27, 2023 · 1 comment
Closed

Poor compression ratio using default compression method #291

narinishi opened this issue Jan 27, 2023 · 1 comment

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@narinishi
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When compressing ~80MB of PDFs using the default compression method, "LZMA2 [std]", and compression level set to "Level 9 (Maximum)", the resultant archive is ~60MB and the entries show as being compressed with "ZSTD", whereas vanilla 7-Zip yields a ~45mb archive with entries showing "LZMA2" as the compression method.

Oddly, selecting "LZMA2, Fast [std]" as the compression method causes the entries to be compressed using "LZMA2" and yields a similarly sized archive to vanilla 7-Zip.
@mcmilk
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mcmilk commented Jan 30, 2023

Yes, I have to change some code here... sth. is wrong with LZMA2 - I will release a fixed version soon.

@mcmilk mcmilk mentioned this issue Jan 30, 2023
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@mcmilk mcmilk closed this as completed Feb 12, 2023
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@mcmilk @narinishi