From nobody Thu May 16 15:58:41 2019 Return-Path: X-Original-To: payload@ietf.org Delivered-To: payload@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 2B355120100; Thu, 16 May 2019 15:58:33 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: payload@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.96.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: payload@ietf.org Message-ID: <155804751310.19776.11486551777953162610@ietfa.amsl.com> Date: Thu, 16 May 2019 15:58:33 -0700 Archived-At: Subject: [payload] I-D Action: draft-ietf-payload-flexible-fec-scheme-20.txt X-BeenThere: payload@ietf.org X-Mailman-Version: 2.1.29 List-Id: Audio/Video Transport Payloads working group discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 May 2019 22:58:33 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Payloads WG of the IETF. Title : RTP Payload Format for Flexible Forward Error Correction (FEC) Authors : Mo Zanaty Varun Singh Ali Begen Giridhar Mandyam Filename : draft-ietf-payload-flexible-fec-scheme-20.txt Pages : 41 Date : 2019-05-16 Abstract: This document defines new RTP payload formats for the Forward Error Correction (FEC) packets that are generated by the non-interleaved and interleaved parity codes from source media encapsulated in RTP. These parity codes are systematic codes (Flexible FEC, or "FLEX FEC"), where a number of FEC repair packets are generated from a set of source packets from one or more source RTP streams. These FEC repair packets are sent in a redundancy RTP stream separate from the source RTP stream(s) that carries the source packets. RTP source packets that were lost in transmission can be reconstructed using the source and repair packets that were received. The non-interleaved and interleaved parity codes which are defined in this specification offer a good protection against random and bursty packet losses, respectively, at a cost of complexity. The RTP payload formats that are defined in this document address scalability issues experienced with the earlier specifications, and offer several improvements. Due to these changes, the new payload formats are not backward compatible with earlier specifications, but endpoints that do not implement this specification can still work by simply ignoring the FEC repair packets. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-payload-flexible-fec-scheme/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-payload-flexible-fec-scheme-20 https://datatracker.ietf.org/doc/html/draft-ietf-payload-flexible-fec-scheme-20 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-payload-flexible-fec-scheme-20 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Thu May 16 16:00:20 2019 Return-Path: X-Original-To: payload@ietfa.amsl.com Delivered-To: payload@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 42409120221 for ; Thu, 16 May 2019 16:00:19 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.299 X-Spam-Level: X-Spam-Status: No, score=-4.299 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=qti.qualcomm.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eFlItQPW_o_5 for ; Thu, 16 May 2019 16:00:16 -0700 (PDT) Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) (using TLSv1.2 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3CE4C120100 for ; Thu, 16 May 2019 16:00:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qti.qualcomm.com; i=@qti.qualcomm.com; q=dns/txt; s=qcdkim; t=1558047616; x=1589583616; h=from:to:subject:date:message-id:mime-version; bh=F/ZFvCUW5pgKmBTG59KrPGEkVHDkpi1Sb/29rWaZpuc=; b=ihkWg2FVH4H52NlulMQlh1CPQO6Szoxp1RoWFIrxSeFh5y0bVZaulDbV XvWmFPDcijo28y0OxepaW61RDWldMDVvzZDUzvUkAXgU5o4oWiyVoH1h3 6ci+2eOmDyMOAPWzluctFMM02yXtAx8jLE164wJAUs3A/wKz+YWIhpN+/ 0=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 16 May 2019 16:00:14 -0700 X-IronPort-AV: E=McAfee;i="5900,7806,9259"; a="255766986" Received: from nasanexm01d.na.qualcomm.com ([10.85.0.84]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/AES256-SHA; 16 May 2019 16:00:14 -0700 Received: from NASANEXM01C.na.qualcomm.com (10.85.0.83) by NASANEXM01D.na.qualcomm.com (10.85.0.84) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 16 May 2019 16:00:14 -0700 Received: from NASANEXM01C.na.qualcomm.com ([10.85.0.83]) by NASANEXM01C.na.qualcomm.com ([10.85.0.83]) with mapi id 15.00.1395.000; Thu, 16 May 2019 16:00:14 -0700 From: Giridhar Mandyam To: "payload@ietf.org" Thread-Topic: Update on FLEX FEC (ver -20) Thread-Index: AdUMOv1jYucN4ke2QaCIqhf4rzQy8w== Date: Thu, 16 May 2019 23:00:13 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.80.80.8] Content-Type: multipart/alternative; boundary="_000_bb89c761fe0c4e738043689300b9e082NASANEXM01Cnaqualcommco_" MIME-Version: 1.0 Archived-At: Subject: [payload] Update on FLEX FEC (ver -20) X-BeenThere: payload@ietf.org X-Mailman-Version: 2.1.29 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id B13711200EA; Mon, 20 May 2019 15:30:28 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: The IESG To: "IETF-Announce" X-Test-IDTracker: no X-IETF-IDTracker: 6.96.0 Auto-Submitted: auto-generated Precedence: bulk Cc: The IESG , adam@nostrum.com, payload-chairs@ietf.org, payload@ietf.org, roni.even@mail01.huawei.com, Roni Even , draft-ietf-payload-flexible-fec-scheme@ietf.org, rfc-editor@rfc-editor.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Message-ID: <155839142871.12899.8754970252332698448.idtracker@ietfa.amsl.com> Date: Mon, 20 May 2019 15:30:28 -0700 Archived-At: Subject: [payload] Protocol Action: 'RTP Payload Format for Flexible Forward Error Correction (FEC)' to Proposed Standard (draft-ietf-payload-flexible-fec-scheme-20.txt) X-BeenThere: payload@ietf.org X-Mailman-Version: 2.1.29 List-Id: Audio/Video Transport Payloads working group discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 May 2019 22:30:29 -0000 The IESG has approved the following document: - 'RTP Payload Format for Flexible Forward Error Correction (FEC)' (draft-ietf-payload-flexible-fec-scheme-20.txt) as Proposed Standard This document is the product of the Audio/Video Transport Payloads Working Group. The IESG contact persons are Adam Roach, Alexey Melnikov and Barry Leiba. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-payload-flexible-fec-scheme/ Technical Summary: This document defines new RTP payload formats for the Forward Error Correction (FEC) packets that are generated by the non-interleaved and interleaved parity codes from source media encapsulated in RTP. These parity codes are systematic codes, where a number of FEC repair packets are generated from a set of source packets from one or more source RTP streams. These FEC repair packets are sent in a redundancy RTP stream separate from the source RTP stream(s) that carries the source packets. RTP source packets that were lost in transmission can be reconstructed using the source and repair packets that were received. The non-interleaved and interleaved parity codes which are defined in this specification offer a good protection against random and bursty packet losses, respectively, at a cost of decent complexity. Working Group Summary: The document was discussed in the meetings, and on the mailing list. The open issues were addressed and there are no open issues; there was consensus on the content of the document. Document Quality: The payload was developed by members from different vendors and is part of the RTCWEB deliveries. Magnus Westerlund and Steve Botzko did a thorough review of the document. A request for a media type review was sent to ietf-types and media-types mailing lists. Personnel: Roni Even is the Document Shepherd. The responsible AD is Ben Campbell. From nobody Sat May 25 22:48:26 2019 Return-Path: X-Original-To: payload@ietf.org Delivered-To: payload@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id BE9BE120048; Sat, 25 May 2019 22:48:24 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IETF Meeting Session Request Tool To: Cc: ron.even.tlv@gmail.com, barryleiba@computer.org, payload-chairs@ietf.org, payload@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.97.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <155884970477.9854.2003489352154033413.idtracker@ietfa.amsl.com> Date: Sat, 25 May 2019 22:48:24 -0700 Archived-At: Subject: [payload] payload - Not having a session at IETF 105 X-BeenThere: payload@ietf.org X-Mailman-Version: 2.1.29 List-Id: Audio/Video Transport Payloads working group discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 May 2019 05:48:25 -0000 Roni Even, a chair of the payload working group, indicated that the payload working group does not plan to hold a session at IETF 105. This message was generated and sent by the IETF Meeting Session Request Tool. From nobody Tue May 28 04:50:57 2019 Return-Path: X-Original-To: payload@ietfa.amsl.com Delivered-To: payload@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 426C912013F for ; Tue, 28 May 2019 04:50:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.199 X-Spam-Level: X-Spam-Status: No, score=-4.199 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9l_FbyvGyYxJ for ; Tue, 28 May 2019 04:50:53 -0700 (PDT) Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B946712013C for ; Tue, 28 May 2019 04:50:52 -0700 (PDT) Received: from lhreml709-cah.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id F177A5B720EC9E63D65F for ; Tue, 28 May 2019 12:50:50 +0100 (IST) Received: from DGGEMM406-HUB.china.huawei.com (10.3.20.214) by lhreml709-cah.china.huawei.com (10.201.108.32) with Microsoft SMTP Server (TLS) id 14.3.408.0; Tue, 28 May 2019 12:50:50 +0100 Received: from DGGEMM526-MBX.china.huawei.com ([169.254.8.39]) by DGGEMM406-HUB.china.huawei.com ([10.3.20.214]) with mapi id 14.03.0439.000; Tue, 28 May 2019 19:50:47 +0800 From: "Roni Even (A)" To: James Sandford , "payload@ietf.org" Thread-Topic: draft-ietf-payload-rtp-ttml-01 Thread-Index: AdT7VlQ3BCOEJKYgROOsDFQqQ3MOpQZ7z7jQ Date: Tue, 28 May 2019 11:50:47 +0000 Message-ID: <6E58094ECC8D8344914996DAD28F1CCD18D29EF3@dggemm526-mbx.china.huawei.com> References: <734752AF0E88364D983373FE5CEFED5759511DFA@bgb01xud1001> In-Reply-To: <734752AF0E88364D983373FE5CEFED5759511DFA@bgb01xud1001> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.200.202.107] Content-Type: multipart/alternative; boundary="_000_6E58094ECC8D8344914996DAD28F1CCD18D29EF3dggemm526mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [payload] draft-ietf-payload-rtp-ttml-01 X-BeenThere: payload@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Audio/Video Transport Payloads working group discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 May 2019 11:50:56 -0000 --_000_6E58094ECC8D8344914996DAD28F1CCD18D29EF3dggemm526mbxchi_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, I reviewed the document and have some comments 1. change Intended status to Standards Track 2. Section three can use some description maybe add text from TTML2 providi= ng short description and reference the TTML2 for further information 3. In section 4.2.1.2 the sentence "The epoch E relative to which computed= TTML media times are offset MUST be set to the RTP Timestamp in the heade= r of the RTP packet in which the TTML document instance is carried" is wri= tten in passive language can you rephrase it. 4. In section 4.2.1.2 "When processing a sequence of TTML documents each de= livered in the same RTP stream" how is it related to the first sentence in= 4.2.1.1 5. In section 4.2.1.2.1.3 I suggest moving the note after the first sentenc= e as a new sentence "short codes for TTML profiles are registered at [TTML= -MTPR]" 6. Section 4.2.1.2.2 why is there a need for specific information about ebu= -tt live. Also maybe in the first sentence add the short form of the profil= e "EBU-TT Live (Etl1) is" 7. in section 6 should be RFC8085[RFC8085] and not RFC8085[RFC8083] also th= e reference to RFC8085 is missing in the reference list. 8. The acknowledgment section do not have to be an Appendix, can stay in th= e same place as a section Roni Even From: payload [mailto:payload-bounces@ietf.org] On Behalf Of James Sandford Sent: Thursday, April 25, 2019 2:03 PM To: payload@ietf.org Subject: [payload] draft-ietf-payload-rtp-ttml-01 Please find the latest version of draft-ietf-payload-rtp-ttml at: https://datatracker.ietf.org/doc/draft-ietf-payload-rtp-ttml/ https://www.ietf.org/id/draft-ietf-payload-rtp-ttml-01.txt Changes are: - Clarification to wording of when processing of a document may be stopped - Completion of RFC Editior Considerations section - Completion of Acknowledgements section - Minor improvement to formatting in RTP Header Usage section Any comments/suggestions appreciated. Regards, James =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D James Sandford R&D Engineer BBC Research and Development 5th Floor Dock House MediaCityUK Salford M50 2LH Tel: 030304 (09549) Web: http://www.bbc.co.uk/rd ________________________________ --_000_6E58094ECC8D8344914996DAD28F1CCD18D29EF3dggemm526mbxchi_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

I reviewed the document a= nd have some comments

 <= /p> 

1. change I=
ntended status to Standards Track  
 
2. Section three can use some description may=
be add text from TTML2 providing  short descriptio=
n and reference the TTML2 for further information 
 
3. In section 4.2.1.2  the sentence “The epoch=
 E relative to which computed TTML media times are offset  MUST be set=
 to the RTP Timestamp in the header of the RTP packet in  which the TT=
ML document instance is carried” is written in passive language can y=
ou rephrase it.
 
4. In section 4.2.1.2 “When processing a sequence o=
f TTML documents each delivered in the  same RTP stream” how is =
it related to the first sentence in 4.2.1.1
 
5. In section 4.2.1.2.1.3 I suggest moving the note after=
 the first sentence as a new sentence “short codes for TTML profiles =
are registered at  [TTML-MTPR]”
 
6. Section 4.2.1.2.2 why is there a need for specific inf=
ormation about ebu-tt live. Also maybe in the first sentence add the short =
form of the profile “EBU-TT Live (Etl1) is”

 


7. in section 6 should be RFC8085[RFC8085] and not RFC808=
5[RFC8083] also the reference to RFC8085 is missing in the reference list.<=
o:p>


 


8. The acknowledgment section do not have to be an Append=
ix, can stay in the same place as a section


 


Roni Even


 


 


 <=
/p>

 <=
/p>





From: payload =
[mailto:payload-bounces@ietf.org]
On Behalf Of James Sandford

Sent: Thursday, April 25, 2019 2:03 PM

To: payload@ietf.org

Subject: [payload] draft-ietf-payload-rtp-ttml-01<=
/p>





 




Please find the latest versi=
on of draft-ietf-payload-rtp-ttml at:







 






Changes are:






- Clarification to wording o=
f when processing of a document may be stopped






- Completion of RFC Editior =
Considerations section






- Completion of Acknowledgem=
ents section






- Minor improvement to forma=
tting in RTP Header Usage section






 






Any comments/suggestions app=
reciated.






 






Regards,





James








 








    &nbs=
p;          


=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

James Sandford

R&D Engineer



BBC Research and Development

5th Floor

Dock House

MediaCityUK

Salford

M50 2LH



Tel: 030304 (09549)

Web: http://www.bbc.co.uk/rd
--_000_6E58094ECC8D8344914996DAD28F1CCD18D29EF3dggemm526mbxchi_-- From nobody Wed May 29 01:53:29 2019 Return-Path: X-Original-To: payload@ietfa.amsl.com Delivered-To: payload@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E868912004A for ; Wed, 29 May 2019 01:53:27 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Wqwawz5DH4uq for ; Wed, 29 May 2019 01:53:25 -0700 (PDT) Received: from mailwdc.intopix.com (mailwdc.intopix.com [212.166.5.108]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 98D1A1200F6 for ; Wed, 29 May 2019 01:53:24 -0700 (PDT) Received: from IPX-MAIL.Intopix.com ([172.30.30.1]) by IPX-MAIL.Intopix.com ([172.30.30.1]) with mapi id 14.03.0352.000; Wed, 29 May 2019 10:53:19 +0200 From: Antonin Descampe To: "payload@ietf.org" Thread-Topic: EOC marker in RTP transport of JPEG XS Thread-Index: AQHVFfv1S6KmDk+y202+wpqXAbGF6g== Date: Wed, 29 May 2019 08:53:17 +0000 Message-ID: <4AD3844B-D37B-4D9B-A08B-5C1AC567C40B@intopix.com> Accept-Language: fr-FR, fr-BE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.128.0.172] x-tm-as-product-ver: SMEX-11.7.0.1024-8.200.1013-24644.005 x-tm-as-result: No--4.850600-0.000000-31 x-tm-as-user-approved-sender: Yes x-tm-as-user-blocked-sender: No Content-Type: multipart/alternative; boundary="_000_4AD3844BD37B4D9BA08B5C1AC567C40Bintopixcom_" MIME-Version: 1.0 Archived-At: Subject: [payload] EOC marker in RTP transport of JPEG XS X-BeenThere: payload@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Audio/Video Transport Payloads working group discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 May 2019 08:53:28 -0000 --_000_4AD3844BD37B4D9BA08B5C1AC567C40Bintopixcom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear all, In the current version of the ID of RTP payload format for ISO/IEC 21122 (J= PEG XS) https://datatracker.ietf.org/doc/draft-ietf-payload-rtp-jpegxs/ the EOC marker (end of codestream, 2 bytes long) is transported in its own = RTP packet, which leads to a suboptimal situation when padding is enabled, = as a complete RTP packet is used for transporting only 2 bytes of metadata. Two solutions are envisioned to solve this issue: 1/ Include the EOC marker in the previous packet (the one containing entrop= y coded data from the last slice). 2/ Simply drop the EOC marker and mark the packet containing data from the = last slice as the last packet of the frame. We advocate for the second solution as it avoids mixing entropy-coded data = and metadata within the same RTP packet, but it also has the drawback to re= quire to regenerate an EOC marker at decoding side if a fully compliant JPE= G XS codestream is needed. Any opinion/advice on this ? Any other comment on the current version of the RTP payload format is also = welcome. FYI, the current version is a much simpler version than the previo= us one and is now in a pretty mature stage. Kind regards, Antonin Descampe -- Antonin Descampe - Ph.D. Compression technologist IntoPIX s.a. +32 10 23 84 70 (Office) a.descampe@intopix.com CONFIDENTIALITY NOTICE: Unless otherwise explicitly or implictly stated, th= is email message and any of its attachments are the property of intoPIX SA = and are strictly confidential. If you are an unintended recipient, please notify the sender immediately. --_000_4AD3844BD37B4D9BA08B5C1AC567C40Bintopixcom_ Content-Type: text/html; charset="us-ascii" Content-ID: <762BA00F3D3AA040AC91970504B7DE97@Intopix.com> Content-Transfer-Encoding: quoted-printable Dear all,

In the current version of the ID of RTP payload format for = ISO/IEC 21122 (JPEG XS) 

https://datatracker.ietf.org/doc/draft-ietf-pay= load-rtp-jpegxs/

the EOC marker (end of codestream, 2 bytes long) is transpo= rted in its own RTP packet, which leads to a suboptimal situation when padd= ing is enabled, as a complete RTP packet is used for transporting only 2 by= tes of metadata.

Two solutions are envisioned to solve this issue:
1/ Include the EOC marker in the previous packet (the one c= ontaining entropy coded data from the last slice).
2/ Simply drop the EOC marker and mark the packet containin= g data from the last slice as the last packet of the frame.

We advocate for the second solution as it avoids mixing ent= ropy-coded data and metadata within the same RTP packet, but it also has th= e drawback to require to regenerate an EOC marker at decoding side if a ful= ly compliant JPEG XS codestream is needed.

Any opinion/advice on this ?

Any other comment on the current version of the RTP payload= format is also welcome. FYI, the current version is a much simpler version= than the previous one and is now in a pretty mature stage.

Kind regards,

Antonin Descampe


--
Antonin Descampe - Ph.D.
Compression technologist 

IntoPIX s.a.
+32 10 23 84 70 (Office)
a.desc= ampe@intopix.com

CONFIDENTIALITY NOTICE: Unless otherwise explicitly or implictly state= d, this email message and any of its attachments are the property of i= ntoPIX SA and are strictly confidential.
If you are an unintended recipient, please notify the sender immediately.

--_000_4AD3844BD37B4D9BA08B5C1AC567C40Bintopixcom_--