How to download YouTube videos using Safari or Firefox ... 2011年12月27日 - For example, it's fairly easy to download MPEG-4-encoded content and play those videos on your Mac and iOS devices because MPEG-4 is ...
30 Incredible Safari Extensions Available Now | Mac ... 作者:Joshua Johnson - 2010年6月29日 - “User CSS is a Safari 5 extension that will easily enable you to override ... As the name suggests, it lets you download YouTube videos.