[Mp4-tech] Mpeg-4 live Webcast

[Jechiam Gural]

Hello,
I' am investigating some details on Mpeg-4 live casting through a CDN.
Does anyone have experience in Live Mpeg-4 events with companies such as 
Akamai or Speedera.
Any useful information with respect to reliable Mpeg-4 (ISMA) encoders and 
servers required for multi hours Web events in Mpeg-4, for example 
Mepegable, Envivio, QT Broadcaster in
combination with a Helix, Envivio or Darwin server   ?
Technical pointers and tips on specific setups for Live Mpeg-4 are appreciated.
BTW: any ideas / time estimations when H264 will become widely available as 
codec in the running Mpeg-4 encoders / decoding devices and what the 
improvement is in terms of quality versus bitrate compared to H263, 
specifically in the lower bitrate part, i.e. 34 to 200 kbps range.
Regards,
Gural