This can be used later by RDT to get the flags from the RTP packet and
use that for the RealMedia packet (such as whether this RTP packet
represents a keyframe or not). For discussion, see "[PATCH] Realmedia
/ RTSP (RDT)".



git-svn-id: file:///var/local/repositories/ffmpeg/trunk@11557 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b