Eltima Software’s VideoDuke 1.0 is a new app for video downloading on a Mac with only a URL at hand.
It can download video files from a variety of websites directly to a user's hard drive. The app also offers downloading of streaming videos. VideoDuke can download videos embedded via HTML5 and those streamed over RTMP.
VideoDuke require macOS 10.10 or higher. It costs $19.95 for a personal license and $39.95 for a family pack (three Macs). A demo is available for download.