From youtubemusicdownloader:
Free YouTube downloader. Both video and audio are supported.
Optimized for speed. Support all available YouTube music quality and
format: 44KHz Stereo H.264 AAC, 44KHz Stereo MP3, 44KHz Mono MP3, 22KHz
Mono MP3, 22KHz Mono 3GP, 8KHz Stereo 3GP
Support all available
YouTube Video quality and format: Full HD (1080P), HD, HQ, NQ, 3GP.
Automatically try to find the available video/music with the highest
quality. Get the video title and use it as the file name.
What's
new in this version: Version 5.0 updated for recent YouTube layout
change; improved youtube downloading speed with multiple threads; fixed
several bugs in converters; optimized MP3/audio/video analysis.
