Here you can see some sites which help you to convert youtube videos.
No software is needed .
Go to youtube. Select the video you want to convert. Copy the URL of that video. Goto any one the sites given.
There you can see a place to paste the URL. Paste it. Then select the format that you want to convert.Then convert and enjoy.Links to 2 sites are given.
1:Media converter
2:ixconverter
