Scraper can't find a game?

If you've scraped one of your systems and there have been games not found by the scraper (Hash Not Found), check whether the game is on thegamesdb.net. If it is, then the best way to get these games added to the database is to run the scraper again, adding the flag:

-missing file

If you're using RetroPie and would have hundreds of games to scrape again, either move those that you know are missing to a separate folder to scrape and/or use the following command to speed things up:

cd /ROM DIRECTORY
/opt/retropie/supplementary/scraper/scraper -thumb_only -missing file.csv -workers 4 -append

If you are not using RetroPie or if you have decided to install the scraper manually, then the command will be slightly different:

cd /ROM DIRECTORY
scraper -thumb_only -missing file.csv -workers 4 -append 

Example for Scraping the N64 folder using the above command:

cd /home/pi/RetroPie/roms/n64
/opt/retropie/supplementary/scraper/scraper -thumb_only -missing file.csv -workers 4 -append

What this does is download only the thumbnail (if not already done so when you last scraped), uses all 4 cores, skips things in the previous run, and most importantly creates a file containing the hashes of the 'missing' games. This file will be called file.csv and should be in the same directory as your roms. Once you have this file, open it up and add a column for the ID in thegamesdb and fill this in. Then upload it to your favorite file-sharing website and post the link in this Issue (20) .