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From: Ribble <Ribble@AgentZilch.con>
Newsgroups: alt.binaries.documentaries
Subject: Re: REQ; Undeground Britain S01E01; Can't find it anywhere; TIA
Date: Sat, 08 Nov 2014 22:16:57 -0500
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On Sun, 09 Nov 2014 01:03:05 GMT, Sadsack <Sads@ck.com> wrote:
>did it work for you ??
File = 504mb consisting of 13 rar's
Each rar = 40mb consisting of 26 chunks
Each chunk = 40mb/26chunks = 1.5mb/chunk
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File = 504mb consisting of 32761 blocks
Each block = 15388 bytes/block
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Each chunk = (40,000,000bytes/26chunks) / (15388bytes/block) = 47
blocks/chunk
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1 error kills 1 chunk, kills 47 blocks, kills 1.5mb
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Ideally, 1 error should kill 1 block, suggesting that there are 47
times too many blocks for a desired rar size = 40mb, or block size
should be about 723236 bytes/block.
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40mb rar may be a bit large. 20mb rar = blocksize 723236bytes/2 =
361618 bytes/block.
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Anyway, 15388 bytes/block is too small, which makes each error too
costly, makes the par2 file too large, and makes each additional
"vol0000+0001.par2" too large. Suggest making each rar 20mb and
blocksize 361618 bytes.
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Otherwise the post is fine and is downloading fine, and is far better
than any first post (including mine) that I have seen.
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Thanks for posting!
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