SDP中Video属性fmtp的含义,比如a=fmtp:34 QCIF=1;CIF=1SDP syntax for H.263 optionsH.263 bitstream supports many picture sizes and different frame rates.
<br />SDP syntax for H.263 optionsSTATUS OF THIS MEMO This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups