program needed

freakboy · Post by **freakboy** » Fri Sep 10, 2004 2:25 pm

Im desperately looking for a program, that compares downloaded file on your pc with the one you downloaded from, and fixes it, if it has errors.
"for example: you download corrupted 700mb rar, then tell the program to check differences and then it sends missing data to you so you wont need to redownload again."
I found a link of such program ages ago, but right now i dont remember the name of it and dont have the link.

Post by **loki1985** » Fri Sep 10, 2004 2:31 pm

the problem is: to compare, the program must re-download all data. this won't save you anything, neither bandwith nor space.

another thing i seen is a tool wich lets you connect to some other guy running the tool and having the original file.
but i think that is not what you meant, right?

freakboy · Post by **freakboy** » Fri Sep 10, 2004 3:02 pm

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (loki1985 @ Sep 10 2004, 02:31 PM)</td></tr><tr><td id='QUOTE'> the problem is: to compare, the program must re-download all data. this won't save you anything, [/quote]
why not? in torrent you download stuff in pieces, 200kb or smth, and if one piece gets corrupted you just redownload a small piece, not all the 1.5 gb file. so i want something simmilar, imagine a program that temporary divides a huge file, and checks checksums of it, and if it appears to be corrupted it just redownloads a piece.

Post by **dead-meat** » Fri Sep 10, 2004 3:06 pm

Hm,.. I think a patchmaker would do the job as well. But then one person had to have both the corrupted and the normal rar file.

That's why I split anything into parts with 15mb +/- and make a sfv file to look i a file is corrpted.. which actually never happened over p911 (insiders, you know what I mean

)

greetz
dead-meat

freakboy · Post by **freakboy** » Fri Sep 10, 2004 3:37 pm

the example of it would be flashget's and dap's [and simmilar programs] that checks if zip is transfered without errors and then redownloads not pieces, but files in it if theyre corrupted, so it would be cool to have a program that supports not only zips, but rars and isos too, but crc cecking would be more accurate i think.
so if anyone finds a program that does that pliz let us/me know

Post by **InsaneFury** » Sat Sep 11, 2004 4:17 pm

you could get the peep who has the original file make a .par recovery file, which you can then use in case the downloaded file doesn't pass the sfv checker...

freakboy · Post by **freakboy** » Sat Sep 11, 2004 6:28 pm

yep, but if i ask the buddy to upp the files 4 me, i ussually ask him to rar eveything in 15MB pieces, so par is not needed, because i just redownload one part from 40.
but if the file is 700 rar and is upped somewhere in space, and you dont know if its corrupted or it got corrupted durring the download procedure then the fixer is very needed.

Post by **loki1985** » Mon Sep 13, 2004 9:08 am

@freakboy:
you got me wrong. since the tool would need to check the crc, it first must calculate the crc. this is done by reading the whole file. for this it DEFINITELY would need to download the whole file. so that brings you nowhere!

freakboy · Post by **freakboy** » Mon Sep 13, 2004 11:41 am

i mean the program divides 700mb file into 700 pieces and every piece has its own sfv file you got from veryfying the file on the server.

Post by **loki1985** » Mon Sep 13, 2004 11:48 am

then this must be enabled on server-side. and i never heard of this...

freakboy · Post by **freakboy** » Mon Sep 13, 2004 3:39 pm

such or simmilar program exsist, but i cant remember the name of it.

Post by **loki1985** » Tue Sep 14, 2004 11:12 am

take a look at this: <a href='http://filerepair.sourceforge.net/' target='_blank'>http://filerepair.sourceforge.net/</a>

with this it should be possible without needing to re-download the whole file. BUT: the guy having the original must have the tool, too, and run it as a server...

maybe that helps....

freakboy · Post by **freakboy** » Tue Sep 14, 2004 1:47 pm

cool, thanks !
gonna try this one.
heres a direct link:
<a href='http://ovh.dl.sourceforge.net/sourceforge/filerepair/filerepair-1.3.7.zip' target='_blank'>http://ovh.dl.sourceforge.net/sourceforge/...epair-1.3.7.zip</a>
sad that both sides have to have it, but its better than nothing.

newmouse · Post by **newmouse** » Tue Sep 14, 2004 7:22 pm

My way of dealing with the "big file with errors some where in it" prob.
I st 1st identify where the error(s) are...using the 'Test' command in Winrar, Winzip or whatever.
Maybe start to install the thing and note where the install fails..assuming
the installer works from begining towards end of file.

NOW

get up a good Hex edit prog that can deal with big file editing..
I use "HEXEDIT" which lives here <a href='http://www.expertcomsoft.com/' target='_blank'>http://www.expertcomsoft.com/</a>.
Cut the file up at the point just before the error use this 1st good bit
with the Resume feature of your download manager to get the next little bit added free of error ....Now edit the orginal 2nd bit of the file on the end having cut off the bad bit.
I once corrected 4 seperate errors in a 180MB RIP of GTA3 in this way
A lot of work but better than re-downloading on my then 33kb line.

U no sume time I tink it Might be easlyer to go to shop and buy the thing
....but thats not really the point is it??