MacX Video Converter Pro is an excellent all-in-one toolkit that works as an HD video converter, video editor, screen recorder, and slideshow maker. It lets you convert 4K HD/SD videos to MP4, AVI, MPEG, FLV, MOV, WMV, MKV, MP3, etc., for playback on QuickTime, iPhone, iPad, or Android flawlessly, and for editing with iMovie and Final Cut Pro. This easy-to-use video converter gives you complete control over all videos recorded with an HD camcorder or downloaded from the Internet at 83x speed and with high video quality.
Note: The download from MacUpdate lacks the YouTube-download functionality. Please visit the developer's Web site to download the full version if YouTube access is important to you.