You can upload videos from your iOS device directly from the YouTube app. Make sure you have the latest version of the YouTube iOS app installed. Follow the steps below:
Sign in to YouTube.
Open the Guide in the upper left corner of the screen and navigate to My Channel (or directly touch the Upload icon on the guide.)
Touch the Upload icon at the top of the screen
Select the video you want to upload from your Camera roll and touch the confirmation button.
Adjust the title, description, tags and privacy settings of your video.
Touch the Upload icon .
Tip: Go to Settings > Uploads to modify the type of connection used to upload videos. Use this setting to restrict uploads to Wi-Fi only.
