To download videos and audio from YouTube channel you must have internet connection in your mobile or PC, so that you can download and install vidmate video downloader application. Vidmate allows you to convert videos from YouTube channel while downloading you will get options to convert it file format like Mp3, Mp4 in HD.
First of all you need to download this app from official site and run it.
Copy YouTube URL and paste it to the box below download links.
Chose the file format MP4, HD, M4V, 3GP, WMV, FLV, MO, MP3, WEBM.
Click the download button to start downloading.
After completing download open the download folder and watch the audio, video or movies.