Re: SessionDependency in H.245

I have a question about a new field in H.245: SessionDependency INTEGER (1..255) OPTIONAL

What is it used for? Does it hold a SessionId value? Does anybody have (or remember the # of ) the related TD about it?

Thank you, Orit Levin

Orit,

I believe this field is used for the layered codec model with H.263+.

This is from AVC-1125:

"The sessionDependency field is set by the MC to indicate when a session is dependent on another session for meaningful decoding of the its data."

I believe sessionDependency identifies the session which has the base layer or enhancement layer for the video (if this is a video session).

Hope this helps.

Corey

corey@fvc.com Tel: +1.408.567.7214 Fax: +1.408.988.7077