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SDP
Generic URI
ABNF Notation
Session Description
Addressing
generic rules
"a=" SDP Attributes
SDP attributes defined in
RFC 5576 – Source-Specific Media Attributes
RFC 5576
–
Section 4
–
Section 10
— see also:
IANA
a=
ssrc
a=
ssrc‑group
a=
cname
a=
previous‑ssrc
attribute
=/
ssrc‑attr
/
ssrc‑group‑attr
/
cname‑attr
/
previous‑ssrc‑attr
ssrc-attr
=
"
ssrc:
"
ssrc-id
SP
attribute
; see
Section 4.1
and
Figure 4 of RFC 5576
ssrc-group-attr
=
"
ssrc-group:
"
semantics
*(
SP
ssrc‑id
)
; see
Section 4.2
and
Figure 5 of RFC 5576
semantics
=
"
FEC
" /
; see RFC 5576
"
FID
" /
; see RFC 5576
"
FEC-FR
" /
; see
RFC 5956
–
Section 4.3
"
DUP
" /
; see
RFC 7104
–
Section 3.2
token
cname-attr
=
"
cname:
"
cname
; see
Section 6.1
and
Figure 6 of RFC 5576
previous-ssrc-attr
=
"
previous‑ssrc:
"
ssrc‑id
*(
SP
ssrc‑id
)
; see
Section 6.2
and
Figure 7 of RFC 5576
cname
=
byte-string
; following the syntax conventions for CNAME as defined in
RFC 3550
–
Section 6.5.1
; with guidelines in
RFC 7022
ssrc-id
=
integer