I can't view H.264 or MPEG4 video streams

Hope someone can help me

I'm using the latest version of Lion on my MacBook Air, all my applications are up to date. I've installed the following plugins; Flip4Mac, Java Applet, Quick time Plugin 7.7.1, Shockwave Flash, Silverlight Plugin, ClicktoPlugin, and Perian.

I'm trying to see a feed from a TrenNet IP Camera with Safari. The camera encodes in H.264, MPEG4 or JPG; I can only see the JPG feed on my MabBookAir. I can see the H.264 feed on my iPhone4s and I can see all of the feeds on my Windows 8 computer. When I doubleclick on the viewports for the H.264 and MPEG4 all I get is a very large frozen QuickTime logo.

I have the same situtation when trying to view H.264 and MPEG4 using Firefox

Thanks