One of the frustrating things about being a RISC OS user, is its lack of support for commonly-used video formats, other than its own dedicated Replay system.
A few attempts have been made to remedy this situation, but, until recently, they have come to nothing.
In the mid-1990s, Innovative Media Solutions produced a range of Acorn readers for PC-format, educational CDs, such as Microsoft
Dinosaurs and Dorling Kindersley's
The Way Things Work. These readers included dedicated versions of ARMovie, which could convert the CD’s AVI files to Replay format on the fly.
Unfortunately, the work that IMS had done, did not result in the release of a souped-up version of Replay, which could play all Quicktime and AVI movies, despite the fact that RISCOS Ltd

seem to have done some work in this area about five years ago.
But now, with the release of the open-source applications, Murnong and FFMpeg, by Chris Martin, things have started to take a turn for the better.
Although RISC OS still does not have a proper media player, which can play all the common video formats, we
do now have the next best thing - an application that can capture a YouTube video stream as it arrives, and convert it to an MPEG file, which can be played using KinoAmp.