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From: drek <none@none.invalid>
Newsgroups: alt.binaries.documentaries
Subject: Re: Chalk_Dust_Trig Video - Confused ->> Ribble<< - please read!
Date: Wed, 23 Jul 2014 18:46:45 -0700
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On Sun, 20 Jul 2014 20:28:25 -0500, Rely <Rely@now.com> wrote:
>I have no idea what help to offer and I've always heard the a sfv is really nothing but a text file.
True enough but it's what is recorded in that text file that makes it
valuable. Simple File Verification is a quick and fairly reliable way
to check a file for corruption errors.
In order to create the .sfv it first runs a CRC computation on the
file(s) and records that value. Running this check again after
downloading something helps ensure that nothing was damaged.
One advantage, obviously, is you can discover in moments if the file
was damaged rather than having to watch an entire video to find out.
>Either way, I have no idea how to generate one.
This is the one I use and it's been around for years. There are
versions to run on all WinX through Vista. It's free, no gimmicks, and
you can integrate it into the shell (let's you right-click and make an
.sfv). The .sfv files themselves are tiny, only ~200 bytes for a 700Mb
video.
http://www.QuickSFV.org
Even if one isn't supplied by the poster it's useful to have one for
your own use so you can check your own files for errors without having
to rewatch every video over again.
Regards,
A short explanation on Wiki
http://en.wikipedia.org/wiki/Simple_file_verification
The nosebleed details
http://en.wikipedia.org/wiki/Cyclic_redundancy_check
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