Apple iPhone 4 lets you record HD videos of 720p, and if you wish to share them, then here is a way to upload HD videos to YouTube from iPhone. Now, you need not connect your iPhone to your computer, transfer them onto your hard disk and then upload them on YouTube.
Here is a step by step guide to upload HD videos to YouTube from iPhone:
STEP 1: To start with, open the Photos app on your iPhone. There navigate it to the album where you have saved the HD video which you are willing to upload.
STEP 2: Now just tap on the video which you want to YouTube.
STEP 3: On just tap on the video and then tap on the option labeled as Send which could be spotted at the lower left corner of the menu.
STEP 4: Now tap on the button labeled as Send To YouTube.
STEP 5: Enter your YouTube credentials.
STEP 6: Once you are logged in, simply tap on the Publish button.
That is it! You have successfully uploaded HD videos to YouTube from iPhone. You can directly upload your HD videos, straight from your iPhone.