It is quite simple to upload a 1080p HD video on YouTube. Using the Camtasia Studio software, you convert the video to the 1080p HD format. While the video is being converted, you can create your YouTube account or log in, since you need an account to upload videos. Then after the video is completed you upload to YouTube, by logging in and clicking on "Upload Video". When uploaded you enable the HD function to the video. And don´t forget the keywords, or your video will be uploaded but won´t appear in the search and won´t be seen. Remember to send the link to who you want to watch.