YouTube is a very popular video sharing website,which has ever become a must visited website everyday for fun, news, or whatever, etc. So, what's going to be, if iPhone+YouTube? What will it be if play the YouTube videos on your iPhone? Is it possible to play YouTube on your iPhone? Well, it seems there is no way, as YouTube videos are all Flash videos, while iPhone plays only the MP4 video. In this way, the best way is to turn to some small conversion tools to convert the Flash videos to MP4 videos. Moyea SWF to Video Converter is such a tool in need.It also can convert swf to avi,mp4,flv etc. The following is a tutorial about how to convert youtube video to MP4 with it right away. Download SWF to Video converter at swfkits.com, install and start it. 1. Input. Import your YouTube video URL: Click "V>From URL", copy and paste the URL in the box, and click "OK" to confirm. Tip: Please do not paste the address in your Address bar into the box, as sometimes the address doesn't take effects. Open Youtube.com and play your video, find "Embed" on the right pane, copy all the code, and paste it to a text book. In the book, find src= "......", past the content in the quotation marks into the box is OK. See the result: Click the "Play" button to have a preview. May sometimes there is freeze and buffering, which is depending on the wire speed, when it is low, there will be freeze. Click "Export" to continue. 2. Export. In "Style", select "iPhone Movie (*.mp4)" In "ExportTo", select your destination folder. Keep other items as the default. 3. Convert. Click "Convert", "Play and capture", and then "Finish" to start the conversion. Note:Because the SWF file from URL would be greatly influenced by internet speed, it is strongly recommended to click "Play Movie" to fully play the movie once before capturing.