[Mp4-tech] software Mpeg-4 encoding

[Jechiam Gural]

Hello,
Is there anybody on the list who would recommend a software vendor that 
provides the "best" price-quality ratio  for live encoding ISO/ISMA of 
Mpeg-4 which will work with Darwin, Kasenna or Helix server?
Will standard players such as QT 6.04, Realone etc playback MPEG-4 with 
H264 codec?
Is there any experience when it comes to getting WMP 9 (with envivio 
plugin) playing back a live MPEG-4 stream.
Thanks,
Gural