| [[Special:myLanguage/Kdenlive/Manual/Transitions/VideoQuality Measurement|Video Quality Measurement]] || Transition || - || This performs the PSNR and SSIm video quality measurements by comparing the B frames to the refernce fram A. It outputs the numbers to stdout in space-delimited format for easy use by another tool. The bottom half of the B frame is placed below the top haf of the A frame for visual comparison. (vqm)