The specific string "retail incl keymaker" often found alongside version 4.7.7.307 points to a specific subculture of the internet: the "warez" or software piracy scene. A "keymaker" (or keygen) is a program designed to bypass software licensing by generating valid registration codes.
This version was notable for balancing ease of use with professional-grade control over video output. Its primary features included: tmpgenc xpress 477307 retail incl keymaker
Here's why:
He dragged his problematic source file into the timeline. TMPGEnc XPress handled the file with a grace his other software lacked. It recognized the VBR audio, it indexed the keyframes instantly. He set the output format to MPEG-2, standard DVD specifications. He tweaked the bitrate settings, maxing out the quality settings—High Quality, Motion Search Precision: Highest Quality (Very Slow). The specific string "retail incl keymaker" often found