The Newsgroup NZB Downloader
SFV File Checker
SFV files are used to make sure that files are downloaded without damage. Power users
usually use PAR files, but there are still a lot of people who use SFV's.
If your NZB file contains an SFV file, open the "SFV File Checker" when the downloading
is done. Use the "Select SFV File" button to open the SFV. SuperNZB will then read the CRC-32 checksums out of the
file, and list them next to each filename. It will then open each file and calculate its own CRC-32 checksum for each
file and list them next to the checksums from the SFV. The two should match.
If the checksums do not match for a file, you can try downloading the file again. If they still don't match, then
it is likely that the data is bad on the server. In that case, all you can do is ask the poster to post it again, and
maybe convince him to learn how to make PAR files.
Even with a bad CRC-32 checksum, it is possible that the file will be perfectly usable. For example, a video file
might have a spot of damage that only shows up as a small blur for a second - something you may not even be able to
spot. A bad checksum means the file is not identical; it doesn't give you any indication how extensive the damage is.
If SuperNZB can't find the files based on the filenames listed in the SFV, it will put "No File" in the second
column of the list. However, you can still get it to work by dragging the file from your Downloads folder and
dropping it onto the matching line in the list.