YouTube is a video-sharing website on which users can upload, share, and view videos. It is a great resource. Since March 2008, YouTube HD Videos have been available in a range of quality levels, with the higher quality levels offering improved picture definition. In November 2008 720p HD support was added. And in November 2009, 1080p HD support was added. Thus users are allowed to upload and enjoy the HD video on YouTube.com. Learn to Convert YouTube to iPad..

Since the announcement of new iPhone 4 is coming, lots of speculations is going around on the new iPhone 4, in HD! The new iPhone 4 is going to be loaded with awesome new features including HD video playback. So is that possible for watching YouTube HD video on new iPhone 4? How to convert YouTube HD video to iPhone 4?
Download YouTube HD video and convert it to iPhone 4 by using WinX HD Video Converter deluxe, it is especially designed for YouTube fans, offering a stunning solution to download website video (including HD video) like YouTube and convert the video to iPhone 4. This professional program makes watching YouTube HD video on iPhone 4 more easily.
How to convert YouTube HD video to iPhone 4?
For converting YouTube HD video to iPhone 4, the first thing you should do is to free download WinX HD Video Converter Deluxe and find out the HD video website URL you want to convert.

Step 1: Click "Add URL" button and enter website video URL into the following dialog box.
Step 2: Click "to Apple" button in Output Format area to choose an output category. Then Click "to iPhone" button to select a specific output format under the category.
Step 3: Click "Browse" button in output setting area and select a destination folder in the dialog box.
Step 4: After you finish the above settings, you could click "Start" button. You are enabled to view the whole conversion progress from the progress bar at the bottom of the dialog box.
Step 5: When the conversion is completed, just transfer the created files to iPhone 4, after that you can enjoy the YouTube HD video on iPhone 4 at anytime and anywhere.
WinX HD Video Converter is a perfect multi-functional combination of website video downloader and HD video converter. You can download and convert website video like YouTube video to AVI, MP4, MPEG, FLV, MOV, M2TS, MTS, TS, MKV, VOB, 3GP etc., or play back the YouTube HD video to portable devices like YouTube video to iPhone(including iPhone 4), iPad, iPod, Apple TV, PS3, PSP, X-box, Zune, PDA, Blackberry, Nokia, Android, Zen, etc.

Related Software
WinX DVD Ripper Platinum: Rip and Convert DVD to iPhone4, iPhone 3GS, iPhone3G.
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WinX HD Video Converter Deluxe : built in hundreds of A/V codecs and equipped with DVD Burner, Website Video Downloader function. As all-in-one HD Video Converter software, it helps you transcode among HD video formats like convert AVCHD M2TS to MKV, convert Blu-ray to MKV, MKV to MP4, etc. Moreover, it is embed with numerous profile settings for Apple, Sony, Microsoft portable devices as well as iOS, Android, Symbian mobile Phones. Convert MKV to iPhone, convert MKV to iPad are good examples.
Related Source
How to Convert Videos to HD YouTube: A Good Approach to Convert Video to HD YouTube.
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How to Convert DVD to iPhone 4: Convert Protected DVD to iPhone4 by DVD to iPhone4 Converter.
How to Convert MOV to iPhone 4 on Mac: MOV to iPhone 4 Video Converter on Mac.
Convert MKV to iPhone 4 on Mac Leopard: Convert MKV to MPEG4 to Play MKV on iPhone 4 Mac Leopard.