Items needed for SDP compatibility

Instead of macros, named tracks. Needed for low-level information.
Information in tracks is accumulated:

<track name="foo" bandwidth=3838>

<track name="foo" abstract="A video track (may be HTML?)">

** Session

abstract= (may be covered by 'comment')

creator="John Doe"
copyright=
copy=yes|no
PublicationDate
Keywords="comma separated keywords that describe session/track"
Description=URI
email="" contact information for responsible party
phone="" 
transport=see RTSP 'transport' header.
bandwidth=see RTSP 'bandwidth' header.


Scheduling

use ftp://ftp.ietf.org/internet-drafts/draft-ietf-calsch-ical-00.txt 

Duration:

e.g., PT15M for 15 minutes, P6W for six weeks

DTEND:
DAYLIGHT:
EXDATE:
EXRULE:

Also need hourly repetition (for news, etc.)

H<interval> [<duration>]


** Track/Stream

. RTP payload type mapping: ptmap="96/L8/8000 97/L16/8000"

. packetization time

. direction=recvonly|half|full|sendonly

. conference=broadcast|meeting|moderated

. framerate=

. quality=0..10

. key="" keytype=clear|base64|uri|prompt

c=* (connection information - optional if included at session-level)
b=* (bandwidth information)
k=* (encryption key)