4K Video Downloader is a video and audio downloader for YouTube, Vimeo, Facebook, Dailymotion, Metacafe, and other video-sharing services. It features video quality up to 4k resolution, FLV, MP4, and MKV support, extraction of audio to the MP3 format, and a "Smart Mode" for fast downloads.
Elmedia Player is media player for Mac. It is also an advanced player of Flash movies and video. It supports playback of multiple popular formats in the free version and can download online videos from multiple Web sites in the Pro version, including streaming videos (over RTMP) and videos embedded via HTML5. Elmedia Player features a built-in Web browser, so you can browse through a Web site and watch online media without leaving the application. Elmedia Player can manage media files with its convenient media library, usual and smart playlists, and more.