[Live-devel] Downloading streaming only not seekable streams with no loss

[pepamoixiiovino at terra.es]

I want to download streaming only not seekable streams like the HD version of:
http://www.apple.com/quicktime/qtv/wwdc10/index.html
with absolutely no loss.
I think doing a multipass download saving each packet until all of them are saved could download entirely all the stream.
Is there a way to fully download streaming only non seekable streams?
Are there any plans or other tool able to do that?