SEATTLE, December 9, 2002 — RealNetworks®, Inc. (Nasdaq: RNWK) today announced the Helix™ DNA Producer source code is now available to software developers through the Helix Community at www.helixcommunity.org. Helix DNA Producer is the core source code of RealNetworks' Helix Producer, which thousands of content creators already use to create RealAudio and RealVideo content. RealNetworks also announced that more than 5,000 software developers have registered in the Helix Community since the initial launch of the community in July.
[...]
As with the Helix DNA Client, the free Helix DNA Producer source code will allow developers to build applications that support any file format from any operating system platform. Application developers will also be able to readily access code to integrate RealAudio®, RealVideo® and Ogg Vorbis output, and to expand the outputs to any number of media formats - such as Windows Media, QuickTime, MPEG-1, MPEG-2, MP3 and MPEG-4.

Source: Real Networks.

How long do people think it will be before we see opensource (or at least just not RealOne) players for RealVideo (don't really care about Real Audio)?

I don´t know if it´s open-source, but it´s a quite good player, also it´s from real:
No ads, no banners, no pictures, no register, no installer, no automatic start at system-startup, plays local and streaming files and only 60KB big (without dlls) for win32 and linux:
helixplay (it doesn´t even have a icon)
It´s in the developer-binary-package, to get it you have to register at helixcommutiy and accept the licences. It´s the best player of Real I´ve seen. But you shouldn´t start full screen, I get a black screen and cannot do anything.