Save the video with ClipConverter.cc and frame step it an a video editing application. I also understand that Youtube new HTML5 feature allows slowed down speed.
With this program: SC Free Video Decompiler 6.3 You can find it on download.com. Its a FREE program and works well, I use it; but... theres a catch. As your downloading it requires you to download...
um i am not sure you understand how youtube works... just search for freeze frame and it will be there if its on there but some companies are more lenient about copy right issues.
good luck finding...