(Mac OS) How to download YouTube videos, upload videos to YouTube, play .FLV files

YouTube is the leader in online video sharing websites and the premier destination for you to watch and share original videos worldwide through a Web experience. YouTube allows people to easily upload and share video clips and across the Internet through websites, mobile devices, blogs, and email. In order to help people easily use YouTube site and YouTube videos, here is a good all-around collection of YouTube How-Tos.

• How to download YouTube videos for FREE with website and free tools
  Most of us go to YouTube website to watch YouTube videos. But have you thought about downloading videos from YouTube and watch them on your computers? The following are ways to download YouTube video on Mac:
  1. Download YouTube Video using web-site
  2. Download YouTube video with Firefox plug-in
     Youtube now supports High-Definition Quality video. Do you think about downloading HD Youtube to localhost? Firefox HD Youtube Downloader Plug-in and Free HD YouTube Downloader are available.
  3. Download YouTube Video using freeware software
  4. Download YouTube video with Safari on Mac
     Most of us like to watch YouTube, right? (Hope so). And it's surprisingly simple and easy to download YouTube videos with Safari. Follow next three steps.
     Open YouTube -> Open Safari -> Rename the downloaded file
• How to play YouTube video with free FLV player for Mac OS
  This is a very convenient way to play the downloaded YouTube videos (or the local FLV files), but the limitation is you could play only one FLV movie each time. If you want to add more than one file, you could use this Free FLV Player for Mac OS, And its playlist allows you choose the one you want to play among the added video files.
  
• How to upload video to YouTube website
  YouTube website allows people to upload videos including WMV, MPEG4, MOV, AVI and MPEG. You may also convert videos to these formats before uploading to YouTube.