Subject: [AVT] draft-ietf-avt-mpeg4-simple-03.txt

From: [email-masked]
Date: Tue, 18 Jun 2002 17:29:48 +0200

Dear all,

A new draft for transport of MPEG-4 streams, draft-ietf-avt-mpeg4-simple-03.txt, has been uploaded. All received comments are incorporated; MPEG considers the draft ready for promotion to RFC.

The changes in summary:

a) two new fields introduced to accommodate transport of MPEG-4 system streams, RAP-flag and Stream-state; the first one is obvious and the second one carries state information on MPEG System streams. See new sections 2.7 and 2.8, as well as the
descriptions of the new fields on page 12.

b) two new optional parameters to configure the two fields of a): RandomAccessIndication and StreamStateIndication (page 24/25).

c) signalling that no configuration information is available for IPMP, OD, CR and MPEG-J streams by a quoted empty hexadecimal octet string, instead of a decimal value of one or zero; see page 23.

d) option to provide the AudioSpecificConfig() for Structured Audio by out of band means; out of band configuration data is signalled by a quoted empty hexadecimal octet string (page 23).

e) removal of erroneous RTP rule in A.1.1. and add more explanatory text, as well as a slightly more complicated example to A.1.1.

f) removal in introduction of paragraph on SL.

g) remove paragraph in subsection "alignment with RFC 3016" about usage of RFC3016 versus RFC#simple, and add new paragraph to introduction saying "while RFC#simple can transport any MPEG-4 stream, more dedicated formats may exist, such as RFC3016.

h) extension of the example of the generic mode (BIFS) in 3.3.2 with using the new fields of a).

i) removal of requirement that ObjectType / StreamType shall not signal MPEG-7/non-MPEG-4 streams on page 20/24; instead warn that RFC#simple may not be capable to carry non-MPEG-4 streams.

j) Adding some text that (referenced) solutions exist for more reliable delivery in section 5.

k) Several editorial changes.

As always, comments are very welcome

Best regards,

Jan

(See attached file: draft-ietf-avt-mpeg4-simple-03.zip)

Jan van der Meer
Philips Digital Networks - MP4Net
Prof Holstlaan 4
Building WDB-1
P.O. Box 80002
5600 JB Eindhoven
The Netherlands
Phone +31 402 735 774
Fax +31 402 735 545