There's actually several topics on this but here's my take on it.

Scan the cover and crop & resize to no greater than 500x700.  There's the argument that having a scan that is multiple thousand pixels in either direction presents you with a sharper and better image but in what case would you actually see it anywhere near that size?

Once you have your image sized to 500x700, perform a sharpen on it if you had to reduce the image down.  Most photos are a little blurry after shrinking and a sharpen compensates.

When you save your JPeg image, save it at the highest compression ratio or somewhere close to it.  If you plan on contributing your scan, save it at the highest possable and examine the file size.  If the file size is 200,000 bytes (not 200k) or larger, drop the compression ratio by 1 and try again.  Typically, a compression ratio of 3-5 (1 being best) works for the front cover and 7-9 works for the back cover.

After you get the image in the 500x700x200,000 byte window, replace the cover in the image directory instead of going through DVDP.  Then contribute.

After the image is scanned in, DPI is meaningless, and applies only as a print term. The larger the DPI, the smaller the printed image, and vice versa.

Images that are to be contributed should always be resized to 500 pixels wide by 700 pixels tall (which ever puts the other below that threshold, usually it's 700 pixels tall), with a DPI of 72, the standard screen resolution spec. DVD Profiler will automatically resize any contributed image to a maximum of either 500 pixels wide or 700 pixels tall, which ever keeps the other below threshold.

For scanning, keep in mind that every scanner has an "optical resolution." Scanning at any DPI higher than that spec is nothing more than a resize done by the scanner software; the exact same thing as resizing in Adobe Photoshop.

There is no practical reason to scan DVD Covers higher than 300 DPI. Again, before importing them into DVD Profiler, they should be resized to a maximum of either 500 pixels wide and 700 pixels tall (whichever puts the other below threshold). As a standard, the DPI should be 72, but it is meaningless for images primarily used on screen. (It can be anything, it will only affect print size.)

How to scan reflective covers?

Quoting Vega:

Quote:
I tried searching for them and couldn't come up with any one thread that listed ideas.

Try google instead, they know something about searching & finding

<your search word> site:invelos.com

e.g. http://www.google.com/search?q=transformers+scan+site%3Ainvelos.com

Quoting Firefly:

Quote:
Can someone clarify a question about this quote from the Contribution Rules?

HD DVD and Blu-Ray discs in either HD Slim or HD Keep Case type cases without slip covers should be scanned without the HD banner.

It seems like all the HD or Blu movie cover scans I have in my database have this attached? I guess I was assuming that Profiler added this to the image. However, recently when I scanned Condemned, the 'automatic' HD banner wasn't added, so I added it myself and then someone rejected my contribution. Can someone shed light on how this is supposed to work? Thanks.

Because it only adds the banner to those profiles without slip covers, and as both HD profiles for The Condemned have the slip cover box ticked, it won't show.

Any suggestions on reducing the moiring effect that seems to sometimes occur when scanning??

Quoting falcon2099:

Quote:
Any suggestions on reducing the moiring effect that seems to sometimes occur when scanning??

Most scanners have the ability to 'descreen' the image that they are scanning. That usually takes care of moire. I also turn off the unsharp mask that most scanners have on by default. I have found I get much cleaner images this way.