Par2, how does it work? File Sharing FAQ | DSLReports.com, ISP Information

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What is Usenet?
What do I need to be able to download posts from Usenet?
Do I have to pay to download from Usenet
I see the term Retention mentioned
How to search the posts made to Usenet?
What are some newsgroups to start checking?
I have downloaded all the posts for one file now what.
How do I use newsreaders for downloading binaries?
Simple guide to using Newsgroups
Par2, how does it work?
Recommended newsgroup clients?
What are some Usenet providers?
Looking for newsgroup search engines?

Par2, how does it work?

Okay, here's the deal.

In Newsleecher, you have a file with a certain number of parts.

Here is a shot of Quickpar

As you can see, there are 1,145 blocks total in all of the files.

There are 120 "recovery" blocks available in all of the pars. (In the file name of the .par2, the number after the + indicates how many recovery blocks there are.)

So, as it's been for me when downloading from usenet, I'll end up with a file that has 1 missing part, that'll equate (usually) to 1-3 blocks needed. If I have 3 incomplete files each needing 3 blocks, only 1 par2 file with say 15 "recovery" blocks is needed to fix those files.

got feedback?

I have mastered downloading Par2 - I have hit the create button and all is ok - so how do I view the movie/files? Chris

2008-04-24 02:17:43 (cutaussieguy )

talk about stating the obvious... how the hell do the algorithmns work

2009-06-07 17:22:31

by drew edited by removed
last modified: 2004-07-16 00:48:04

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Par2, how does it work?