Hi, For the b= qualifier look in
http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sdp-new-25.txt and http://www.ietf.org/rfc/rfc3890.txt The current H.261 draft is http://www.ietf.org/internet-drafts/draft-ietf-avt-rfc2032-bis-11.txt Roni Even -----Original Message----- From: Erez Morabia [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 17, 2006 10:34 AM To: Even, Roni; [email protected] Subject: RE: [Sip-implementors] Asymmetric media format Hi, I have looked into RFC 4317 (SDP Offer/Answer Examples), but I could not find example related to this issue. I know that some vendors do use the MaxBR field. Where can I find the payload specification? Thanks, Erez -----Original Message----- From: Even, Roni [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 17, 2006 9:51 AM To: Erez Morabia; [email protected] Subject: RE: [Sip-implementors] Asymmetric media format Hi, I think it is OK. The problem I see is with the MaxBR field. I am not aware that it is in the payload specification. You should use b=AS:440 or b=TIAS:440000 for each m line Roni Even -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Erez Morabia Sent: Tuesday, January 17, 2006 8:23 AM To: [email protected] Subject: [Sip-implementors] Asymmetric media format Hi, Suppose I want to announce different format parameters for the receive direction and for the transmit direction. For example, Receive : QCIF, 110Kbps, 15fps Transmit: CIF, 440Kbps, 30fps Is there a way for doing it? The only thing I can think of is: m=video 6794 RTP/AVP 31 a=rtpmap:31 H261/90000 a=fmtp:31 CIF=1/MaxBR=4400 a=sendonly m=video 6794 RTP/AVP 31 a=rtpmap:31 H261/90000 a=fmtp:31 QCIF=2/MaxBR=1100 a=recvonly Thanks, Erez _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
