Just three steps to enjoy making DVD movies from popular videos on Youtube and your favorite photos.

Step One
First, you must download the videos in .flv format on Youtube and convert them to other video formats such as avi, wmv, mp4, etc. There is a great website which can download .flv files and convert them to other video formats automatically. It is free for everyone. There is the website: http://vixy.net/flv_converter You only need to paste the URL of .flv files and choose the output format. Then just click Start to get the videos on Youtube.

Step Two
Then, you can use DVD Slideshow Builder which is very powerful and very popular now. It's very easy to create a customized DVD slide show with photos and videos, and you can add music, transitions, and motion effects and make beautiful DVD menus. You can get the software directly from here: http://support.wondershare.com/stat/?action=down&id=4&sid=8

Step Three
Install the software and use it to create DVD movies with Youtube videos and photos. It is very easy to use. The interface with straight six-step process effortlessly guide you through the 1) Import, 2) Effect, 3) Music, 4) Menu , 5)Preview and 6)Burn steps. A specific tutorial is here:
http://www.photo-to-dvd.com/forum/viewtopic.php?t=1452