For the shot of Rushy last night I used a 5 year old Kodak DX6490 camera. It's 4 megapixel but it has a schneider lens which is more important than the megapixels.
I use Vimeo instead of Youtube because they don't compress the videos as much. Also YouTube is stripping the audio from videos now so I've binned them because of that.
The camera exports the video in .mov quicktime format but it wouldn't upload direct to the site so I brought it into imovie on the mac and then exported it again.
For the Sibirsky trip I used a Canon HF100 which is a proper HD camcorder.
what browser are you using? What operating system? In what way can you not see the videos? Do you get a message saying the video is unavailable or does it just not appear? Do you have flash installed? Again which version?