YTD Video Downloader

 The free version of YTD Video Download only allows downloading to the MP4 video format, so the additional conversion functionality for changing the file to WMV, AVI, or MP3 is welcome, but why not just convert the download on the fly? Converting video files worked acceptably well, although I did crash the app once converting a Download Video Preview from MP4 to MP3. The conversion completed, but the program become unresponsive and I had to force quit. I experienced other occasional brief program hangs when downloading large videos from foreign sites.