We have updated Power CD+G to Video Karaoke Converter and Power CD+G to MP4 Karaoke Converter to version 2.1.11 with optimized algorithm for background video rendering. As a result new version should smoothly convert videos with HD/1080p backgrounds.
Starting from version 2.1.10 Power CD+G to Video Karaoke Converter and Power CD+G to MP4 Karaoke Converter can use MP4 and MKV files as video backgrounds. This works in addition to still backgrounds. AVI video files had already been supported.