Richer internet experiences with SIP/SDP?

Recently I have been taking a look at SIP.

When I thought more about the voice and video encoding negotiations primarily, I began to wonder about uses for this kind of negotiation a richer web browsing experience.

I have regularily come across web-sites offering a link to some content, only to find myself brought not to the content, but to another page where I then have to select which format I would like to get that content in ? Think of having clicked a link to some audio or video content, only to find yourself at yet another page where you have to select which encoding your computer or browser has support for (aac, mp3, m4a, mpeg, flash, quicktime, wma, wmv, etc.) . Then, if you are lucky and chose correctly, you will get to see the video or hear the audio.

Even when just looking for a document one can encounter a similiar situation, which format would you like a document in(text, ms-word, pdf, html, ps, etc.).

I’m not suggesting SIP itself is the answer, but I thought that a browsing experience with SIP/SDP-like capabilities could solve this manual step nicely.

Click a link to some content, or just to a web site with various content at it, and the web browser and web server transparently negotiate which methods to use to send to content to you, based perhaps on the capabilities of your system, or the bandwidth available or some preferred format defaults in the browser setup, or whatever.

Perhaps with Flash becoming so popular for video and audio content, PDF for text and static image content, and renderers for both coming to more and more client devices, this idea is somewhat diluted…???

Also, perhaps this has already been otherwise addressed in the web world ? Now that I have thought about it, I find it hard to believe that it has not been.

Yet I still find many sites with many choices available for selection of some audio, video or document content for download…

Comments?