Audio Video Transport A. Leung Internet-Draft S. Futemma Intended status: Standards Track E. Itakura Expires: October 26, 2008 Sony Apr 24, 2008 Payload Format for JPEG 2000 Video: Extensions for Scalability and Main Header Recovery draft-ietf-avt-rtp-jpeg2000-beam-10 Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on October 26, 2008. Copyright Notice Copyright (C) The IETF Trust (2008). Leung, et al. Expires October 26, 2008 [Page 1] Internet-Draft JPEG 2000 RTP EX Apr 2008 Abstract This memo describes extended uses for payload header in RFC document: "RTP Payload Format for JPEG 2000 Video Streams." For better support of JPEG 2000 features such as scalability and main header recovery. This memo must be accompanied with a complete implementation of "RTP Payload Format for JPEG 2000 Video Streams." That document is a complete description of the payload header and signaling, this document only describes additional processing for the payload header. There is an additional media type and SDP marker signaling for implementations of this document. Leung, et al. Expires October 26, 2008 [Page 2] Internet-Draft JPEG 2000 RTP EX Apr 2008 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1. Description of the Mechanisms . . . . . . . . . . . . . . 4 1.1.1. Main Header Compensation . . . . . . . . . . . . . . . 4 1.1.2. Priority Table . . . . . . . . . . . . . . . . . . . . 4 1.2. Motivations for Priority Field coding . . . . . . . . . . 5 1.2.1. Scenario: Just enough resolution . . . . . . . . . . . 5 1.2.2. Scenario: Multiple clients, single source . . . . . . 5 1.3. Conventions Used in This Document . . . . . . . . . . . . 5 2. Payload Format Enhanced Processing . . . . . . . . . . . . . . 6 2.1. Enhanced Processing Markers . . . . . . . . . . . . . . . 6 3. Priority Mapping Table . . . . . . . . . . . . . . . . . . . . 8 3.1. Packet Number Based Ordering . . . . . . . . . . . . . . . 8 3.2. Progression Based Ordering . . . . . . . . . . . . . . . . 8 3.3. Layer Based Ordering . . . . . . . . . . . . . . . . . . . 10 3.4. Resolution Based Ordering . . . . . . . . . . . . . . . . 10 3.5. Component Based Ordering . . . . . . . . . . . . . . . . . 10 4. JPEG 2000 Main Header Compensation Scheme . . . . . . . . . . 12 4.1. Sender Processing . . . . . . . . . . . . . . . . . . . . 12 4.2. Receiver Processing . . . . . . . . . . . . . . . . . . . 12 5. Media Type Registration . . . . . . . . . . . . . . . . . . . 14 6. SDP Parameters . . . . . . . . . . . . . . . . . . . . . . . . 15 6.1. Mapping of the optional parameters to SDP . . . . . . . . 15 6.2. Usage with the SDP Offer/Answer Model . . . . . . . . . . 15 6.2.1. Examples . . . . . . . . . . . . . . . . . . . . . . . 16 7. IANA Consideration . . . . . . . . . . . . . . . . . . . . . . 19 8. Security Consideration . . . . . . . . . . . . . . . . . . . . 20 9. Congestion Control . . . . . . . . . . . . . . . . . . . . . . 21 10. Normative References . . . . . . . . . . . . . . . . . . . . . 22 Appendix A. Sample Headers in Detail . . . . . . . . . . . . . . 23 A.1. Sample 1: Progressive image with single tile, 3500 bytes (i.e. thumbnail) . . . . . . . . . . . . . . . . . . 23 A.2. Smaple 2: Image with 4 tiles . . . . . . . . . . . . . . . 25 A.3. Sample 3: Packing multiple tiles in single payload, fragmented header. No header compensation, progressive image . . . . . . . . . . . . . . . . . . . . . . . . . . 26 A.4. Sample 4: Interlace image, single tile . . . . . . . . . . 28 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 32 Intellectual Property and Copyright Statements . . . . . . . . . . 33 Leung, et al. Expires October 26, 2008 [Page 3] Internet-Draft JPEG 2000 RTP EX Apr 2008 1. Introduction This document is an extension of: "RTP Payload Format for JPEG 2000 Video Streams" [1]. These are additional mechanisms which can be used with certain parts of the header in [1] to support JPEG 2000 features such as: scalability and a main header compensation method. These mechanisms are described in detail in this document. These are optional extensions to RFC XXXY [1].which one may use to make better use of JPEG 2000 features. These extensions are not required for any implementations of RFC XXXY[1]. 1.1. Description of the Mechanisms 1.1.1. Main Header Compensation JPEG 2000 has a scalable coding scheme which allows for decompressing truncated or partial data streams but only when the main header is present. If the header is lost, the data is useless. With JPEG 2000 video coding, coding parameters between frames will rarely change and previous headers may be used in newly received data which the header have been lost. Compensation of the main header that has been lost is very simple with this procedure. In the case of JPEG 2000 video, it is very common that encode parameters will not vary greatly between successive frames. Even if the RTP packet including the main header of a frame has been dropped, decoding may be performed by using the main header of a prior frame. 1.1.2. Priority Table JPEG 2000 codestream has rich functionality built into it so decoders can easily handle scalable delivery or progressive transmission. Progressive transmission allows images to be reconstructed with increasing pixel accuracy or spatial resolution. This feature allows the reconstruction of images with different resolutions and pixel accuracy, for different target devices. A single image source can provide a codestream that is easily processed for smaller image display devices. JPEG 2000 packets contain all compressed image data from a specific: layer, component, resolution level, and/or precinct. The order in which these JPEG 2000 packets are found in the codestream is called: the progression order. The ordering of the JPEG 2000 packets can progress along four axes: layer, component, resolution and precinct (or position). Leung, et al. Expires October 26, 2008 [Page 4] Internet-Draft JPEG 2000 RTP EX Apr 2008 Providing a priority field to indicate the importance of data contained in a given RTP packet can aid in usage of JPEG 2000 progressive and scalable functions. 1.2. Motivations for Priority Field coding JPEG 2000 coding scheme allows one to reorder the codestream in many ways. Even when the coding scheme is determined and arranged by the encoder, a decoder can still re-arrange the code stream on the fly to suit decode parameters such as: re-arranging from resolution progressive to quality progressive. Using the priority field coding, the decoder gains insight into the codestream without access to the full codestream and exposes features of JPEG 2000 to a higher level. A few of the scenarios are presented below the authors have thought of to utilize this field. The priority field allows more information about the image to be sent without more signaling between sender and receivers to leverage JPEG 2000 capabilities. 1.2.1. Scenario: Just enough resolution The scenario is when rapid scene access is more important than higher quality. By using the priority field, the receiver can decode for its own quality level. If the sender cannot determine the receiver's resolution, the receiver can select which parts of the codestream to decode/load by using the priority field. 1.2.2. Scenario: Multiple clients, single source In a multicast environment, there are clients with better visual capability than others (i.e. TV conference vs. Mobile). The respective clients can use the priority field to determine which packets are vital for their own visual presentation. The sender will have to do work on the priority field to optimally serve all the clients while only managing a single visual stream. 1.3. Conventions Used in This Document The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC2119. [2]. RFC-Editor Note: The RFC Editor is requested to replace all occurences of RFC XXXY with the RFC number draft-ietf-avt-rtp-jpeg2000 receives. At that time, please remove this note. Leung, et al. Expires October 26, 2008 [Page 5] Internet-Draft JPEG 2000 RTP EX Apr 2008 2. Payload Format Enhanced Processing 2.1. Enhanced Processing Markers This section of the document describes additional usage in the values of mh_id and priority fields and interpretation which differ from RFC XXXY [1]. Implementions of this document should follow RFC XXXY [1] first then add additional header processing as described in this document. Implementations following this document are expected to interoperate with implementations of [1] and this document as well. The RTP payload header format for JPEG 2000 video stream is as follows: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |tp |MHF|mh_id|T| priority | tile number | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |reserved | fragment offset | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 1: RTP payload header format for JPEG 2000 mh_id (Main Header Identification) : 3 bits Main header identification value. This is used for JPEG 2000 main header recovery. The initial value of mh_id MUST be 1 at the beginning of the session. The same mh_id value is used as long as the coding parameters described in the main header remains unchanged between frames. The mh_id value MUST be incremented by 1 every time a new main header is transmitted. Once the mh_id value becomes greater than 7, it SHOULD roll over to 1. When mh_id is 0, it has special usage for the receiver. This special usage is described in Section 4.2 of this document. Senders should follow Section 4.1 of this document for proper mh_id assignment and usage. Leung, et al. Expires October 26, 2008 [Page 6] Internet-Draft JPEG 2000 RTP EX Apr 2008 priority : 8 bits The priority field indicates the importance of the JPEG 2000 packet included in the payload. Typically, a higher priority is set in the packets containing JPEG 2000 packets containing the lower sub-bands. Special values of priority: 0: This is reserved for payload which contain a header (main or tile part header.) This is considered the most important. 1 to 255: These values decrease in importance as the values increase. (i.e. 1 is more important than 2, etc.) Applying priority values should correlate directly to JPEG 2000 codestream in importance. The lower the priority value is the higher the importance. A priority value of 0 is the highest importance and 255 is the lowest importance. We define the priority value 0 as a special priority value for the headers (the main header or tile-part header). If any headers (the main header or tile-part header) are packed into the RTP payload, the sender MUST set the priority value to 0. Assignment of the values are described in Section 3 Leung, et al. Expires October 26, 2008 [Page 7] Internet-Draft JPEG 2000 RTP EX Apr 2008 3. Priority Mapping Table For the progression order, the priority value for each JPEG 2000 packet is given by the priority mapping table. This document specify several commonly-used priority mapping tables, pre-defined priority mapping tables: packet number based (default), progression-based, layer-based, resolution-based, position-based, and component-based. Packet number priority mapping is REQUIRED to be supported by clients implementing this specification. Other priority mapping tables (progression, layer, resolution, and component based) are OPTIONAL to implementations of this specification. Rules that all implementations of this specification MUST follow in all priority modes: o When there is a header in the packet with a JPEG 2000 packet, the sender MUST set the payload packet priority value to 0. o When there are multiple JPEG 2000 packets in the same RTP payload packet, the sender MUST set the payload packet priority value to the lowest JPEG 2000 packet. (i.e. if JPEG 2000 packets with priority: 5,6,7 are packed into a single payload, the priority value will be 5.) 3.1. Packet Number Based Ordering Packet number based ordering assigns the payload packet priority value from the "JPEG 2000 packet value". (note: JPEG 2000 codestreams are stored in units of packets and each packet has a value .) This method is the default method for assigning priority value. All implementations of this specification MUST support this method. If the JPEG 2000 codestream packet value is greater than 255, the sender MUST set the payload priority value to 255. 3.2. Progression Based Ordering The sender will assign the payload packet priority value only based on layer, resolution, and component ordering of the codestream. The ordering can assign the different priority values in the same layer or the resolution level, which cannot do in the layer based ordering or resolution based ordering. The difference from the packet number based ordering is that it does Leung, et al. Expires October 26, 2008 [Page 8] Internet-Draft JPEG 2000 RTP EX Apr 2008 not assign the value in the position level, which saves the priority values usage. The position based priority signaling is not so important because a receiver could recognize the position by checking the tile number field. Therefore, the ordering would be useful. For example: If the codestream is ordered in LRCP (Layer, Resolution, Component, Position) with 1 layer, 2 resolutions, 3 components, and 2 positions, an example would have packet numbering as so: All the packets in: layer.........0 resolution....0 component.....0 position......0 or 1 then the packet priority value : 1 All the packets in: layer.........0 resolution....0 component.....1 position......0 or 1 then the packet priority value : 2 All the packets in: layer.........0 resolution....0 component.....2 position......0 or 1 then the packet priority value : 3 All the packets in: layer.........0 resolution....1 component.....0 position......0 or 1 then the packet priority value : 4 Leung, et al. Expires October 26, 2008 [Page 9] Internet-Draft JPEG 2000 RTP EX Apr 2008 All the packets in: layer.........0 resolution....1 component.....1 position......0 or 1 then the packet priority value : 5 3.3. Layer Based Ordering Layer-based priority mapping table simplifies the default mapping to just matching JPEG 2000 packets together from the same layer. For example: All the packets in layer 0 : packet priority value : 1 All the packets in layer 1 : packet priority value : 2 All the packets in layer 2 : packet priority value : 3 ... All the packets in layer n : packet priority value : n+1 All the packets in layer 255 : packet priority value : 255 3.4. Resolution Based Ordering Resolution-based priority mapping table is similar to the layer based order but for JPEG 2000 packets of the same resolution For example: All the packets in resolution 0 : packet priority value : 1 All the packets in resolution 1 : packet priority value : 2 All the packets in resolution 2 : packet priority value : 3 ... All the packets in resolution n : packet priority value : n+1 All the packets in resolution 255 : packet priority value : 255 3.5. Component Based Ordering Component-based priority mapping table is mapping together JPEG 2000 components of the same component For example: All the packets in component 0 : packet priority value : 1 All the packets in component 1 : packet priority value : 2 All the packets in component 2 : packet priority value : 3 ... Leung, et al. Expires October 26, 2008 [Page 10] Internet-Draft JPEG 2000 RTP EX Apr 2008 All the packets in component n : packet priority value : n+1 All the packets in component 255 : packet priority value : 255 Leung, et al. Expires October 26, 2008 [Page 11] Internet-Draft JPEG 2000 RTP EX Apr 2008 4. JPEG 2000 Main Header Compensation Scheme The mh_id field of the payload header is used to indicate whether the encoding parameters of the main header are the same as the encoding parameters of the previous frame. The same value is set in mh_id of the RTP packet in the same frame. The mh_id and encode parameters are not associated with each other as 1:1 but they are used to indicate whether the encode parameters of the previous frame are the same or not in the event of a lost header. The mh_id field value SHOULD be saved from previous frames to be used to recover the current frame's main header. If the mh_id of the current frame has the same value as the mh_id value of the previous frame, the previous frame's main header MAY be used to decode the current frame, in case of a lost header in the current frame. The sender MUST increment mh_id when parameters in the header change and send a new main header accordingly. The receiver MAY use the mh_id and MAY retain the header for such compensation. 4.1. Sender Processing The sender MUST transmit RTP packets with the same mh_id value if the encoder parameters of the current frame are the same as the previous frame. The encoding parameters are the fixed information marker segment (SIZ marker) and functional marker segments (COD, COC, RGN, QCD, QCC, and POC) specified in JPEG 2000 Part 1 Annex A [3]. An initial value of mh_id MUST be selected randomly between 1 and 7 for security reasons. If the encode parameters changes, the sender transmitting RTP packets MUST increment the mh_id value by one, but when mh_id value becomes greater than 7, a sender MUST set mh_id value back to 1. 4.2. Receiver Processing When the receiver receives the main header completely, the RTP sequence number, the mh_id and main header should be saved. Only the last main header that was received completely SHOULD be saved. When the mh_id value is 0, the receiver SHOULD NOT save the header. When the main header is not received, the receiver may compare the current payload header's mh_id value with the previous saved mh_id value. If the values match, decoding may be performed by using the previously saved main header. Leung, et al. Expires October 26, 2008 [Page 12] Internet-Draft JPEG 2000 RTP EX Apr 2008 If the mh_id field is set to 0, the receiver MUST NOT save the main header and MUST NOT compensate for lost headers. If the mh_id value changes, receivers SHOULD save the current header and save the new mh_id value. The old saved header should be deleted from storage. Leung, et al. Expires October 26, 2008 [Page 13] Internet-Draft JPEG 2000 RTP EX Apr 2008 5. Media Type Registration This document extends the associated media type from RFC XXXY[1]. Here are additional optional parameters. Additional optional parameters: mhc : Main Header Compensation. this option is used when sender and/or receiver is utilizing the Main Header compensation technique as specified in this document. Acceptable values when using the Main Header compensation technique is "1", otherwise, it should be "0". This is a list of options to be included when the sender or receiver is utilizing the Priority Table option as specified in this document. pt : Priority Table. this option is followed by a comma-separated list of predefined priority table definitions to be used by sender or receiver. The option appearing front most in the option line is the most important and next are of decreasing importance. Acceptable values: progression : this table follows the progression ordering of the codestream. layer : this table follows the layer ordering of the codestream. resolution : this table follows the resolution ordering of the codestream. component : this table follows the component ordering of the codestream. default : this table follows the ordering of the codestream. Leung, et al. Expires October 26, 2008 [Page 14] Internet-Draft JPEG 2000 RTP EX Apr 2008 6. SDP Parameters 6.1. Mapping of the optional parameters to SDP The new optional parameters mhc and pt, if presented, MUST be included in the "a=fmtp" line of SDP. These parameters are expressed as a media type string, in the form of a semicolon separated list of parameter=value pairs. 6.2. Usage with the SDP Offer/Answer Model In addition to SDP Offer/Answer section in RFC XXXY [1]: When offering JPEG 2000 over RTP using SDP in an Offer/Answer model [4], the following rules and limitations apply: o All parameters MUST have an acceptable value for that parameter. o All parameters MUST correspond to the parameters of the payload. o If the optional parameter "mhc" is used, it MUST appear in the offer with value "1", and if accepted, it SHOULD appear in the answer. o If the optional parameter "pt" is used, it MUST appear in the offer containing a complete comma-separated list indicating which priority table definitions the sender supprots. If accepted, it SHOULD appear in the answer containing a single priority table definition selected from the offer. o If the optional parameter "mhc" is used, it MUST appear in the offer with value "1", and if accepted, it MUST appear in the answer. If the optional parameter "pt" is used, it MUST appear in the offer containing a complete comma-separated list indicating which priority table definitions the sender supports. If accepted, it MUST appear in the answer containing a single priority table definition selected from the offer. o In a multicast environment: * Senders should send out one option for priority-table- definition for everyone in the group. * Even if a single client in the group does not support the extensions outlined in this document, senders MAY use these mechanisms. A receiver which doesn't support the mechanisms would safely ignore the values.in mh_id and priority field. Leung, et al. Expires October 26, 2008 [Page 15] Internet-Draft JPEG 2000 RTP EX Apr 2008 6.2.1. Examples Offer/Answer example exchanges are provided. 6.2.1.1. Example 1 Alice offers Main Header Compensation functionality, YCbCr 422 color space, interlace image with 720-pixel width and 480-pixel height and several priority-table options (default, progression, layer, resolution, component) as below: v=0 o=alice 2890844526 2890844526 IN IP4 host.example s= c=IN IP4 host.example t=0 0 m=video 49170 RTP/AVP 98 a=rtpmap:98 jpeg2000/90000 a=fmtp:98 mhc=1; sampling=YCbCr-4:2:2; interlace=1; pt=default,progression,layer,resolution, component; width=720;height=480 Bob accepts Main Header Compensation functionality, YCbCr-4:2:2 color space, interlace image, default mapping table and replies: v=0 o=bob 2890844730 2890844731 IN IP4 host.example s= c=IN IP4 host.example t=0 0 m=video 49920 RTP/AVP 98 a=rtpmap:98 jpeg2000/90000 a=fmtp:98 mhc=1; sampling=YCbCr-4:2:2;interlace=1; pt=default;width=720;height=480 6.2.1.2. Example 2 Alice offers Main Header Compensation, YCbCr 420 color space, progressive image with 320-pixel width and 240-pixel height and layer priority-table options as below: v=0 o=alice 2890844526 2890844526 IN IP4 host.example s= c=IN IP4 host.example t=0 0 m=video 49170 RTP/AVP 98 a=rtpmap:98 jpeg2000/90000 Leung, et al. Expires October 26, 2008 [Page 16] Internet-Draft JPEG 2000 RTP EX Apr 2008 a=fmtp:98 mhc=1; sampling=YCbCr-4:2:0; pt=layer;width=320;height=240 Bob does not accept Main Header Compensation functionality but accepts YCbCr-4:2:0 color space,layer based priority mapping and replies: v=0 o=bob 2890844730 2890844731 IN IP4 host.example s= c=IN IP4 host.example t=0 0 m=video 49920 RTP/AVP 98 a=rtpmap:98 jpeg2000/90000 a=fmtp:98 mhc=0; sampling=YCbCr-4:2:0; pt=layer;width=320;height=240 6.2.1.3. Example 3 Alice offers 27 MHz timestamp, Main Header Compensation, YCbCr 420 color space, progressive image with 320-pixel width and 240-pixel height and layer priority-table options as below: v=0 o=alice 2890844526 2890844526 IN IP4 host.example s= c=IN IP4 host.example t=0 0 m=video 49170 RTP/AVP 98 99 a=rtpmap:98 jpeg2000/27000000 a=rtpmap:99 jpeg2000/90000 a=fmtp:98 mhc=1; sampling=YCbCr-4:2:0; pt=layer;width=320;height=240 a=fmtp:99 mhc=1; sampling=YCbCr-4:2:0; pt=layer;width=320;height=240 Bob can accept payload type with 27 MHz timestamp, and does not accept Main Header Compensation functionality but accepts YCbCr-4:2:0 color space,layer based priority mapping and replies: v=0 o=bob 2890844730 2890844731 IN IP4 host.example s= c=IN IP4 host.example t=0 0 m=video 49920 RTP/AVP 98 a=rtpmap:98 jpeg2000/27000000 a=fmtp:98 mhc=0; sampling=YCbCr-4:2:0; Leung, et al. Expires October 26, 2008 [Page 17] Internet-Draft JPEG 2000 RTP EX Apr 2008 pt=layer;width=320;height=240 Leung, et al. Expires October 26, 2008 [Page 18] Internet-Draft JPEG 2000 RTP EX Apr 2008 7. IANA Consideration This document extends the associated media type from XXXY [1]. Additional parameters are specified in Section 5 of this document. Leung, et al. Expires October 26, 2008 [Page 19] Internet-Draft JPEG 2000 RTP EX Apr 2008 8. Security Consideration Please refer to section 6 of RFC XXXY [1] for Security Considerations regarding this RTP format. The security issues regarding enhanced mechanisms presented in this document are discussed in the section. The mh_id field can identify a maximum of 7 different main headers. If severe packet loss (either random or intentionally introduced by an attacker) causes 6 successive updates to the main header to be lost, the decoder will attempt decompression using an incorrect main header. Care should be taken to prevent implementation bugs with potential security consequences." Leung, et al. Expires October 26, 2008 [Page 20] Internet-Draft JPEG 2000 RTP EX Apr 2008 9. Congestion Control Please refer to section 7 of RFC XXXY [1] for Congestion Control regarding this RTP format. Leung, et al. Expires October 26, 2008 [Page 21] Internet-Draft JPEG 2000 RTP EX Apr 2008 10. Normative References [1] Futemma, "RTP Payload Format for JPEG 2000 Video Streams", RFC XXXY, April 2007. [2] Bradner, "Key words for use in RFCs to Indicate Requirement Levels", RFC 2119, March 1997. [3] ISO/IEC JTC1/SC29, ISO/IEC 15444-1 | ITU-T Rec. T.800, "Information Technology - JPEG 2000 Image Coding System - Part 1: Core Coding System", December 2000. [4] Rosenberg and Schulzrinne, "An Offer/Answer Model with Session Description Protocol (SDP)", RFC 3264, June 2002. Leung, et al. Expires October 26, 2008 [Page 22] Internet-Draft JPEG 2000 RTP EX Apr 2008 Appendix A. Sample Headers in Detail The following figures are sample RTP headers demonstrating values that should appear in the RTP header. The packet priority is Packet Number Based Priority. For reference, the payload header as follows 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |tp |MHF|mh_id|T| priority | tile number | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |reserved | fragment offset | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 2: JPEG200 payload header A.1. Sample 1: Progressive image with single tile, 3500 bytes (i.e. thumbnail) First Packet: This packet will have the whole main header. 210 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 3 | 1 |1| 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF4F FF51 002F 0000 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 3: Header Sample 1-1 (First Packet) Leung, et al. Expires October 26, 2008 [Page 23] Internet-Draft JPEG 2000 RTP EX Apr 2008 Second Packet: This packet will have a tile header and the first tile part LLband 1500 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 1 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 210 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0000 0000 2DB3 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 4: Header Sample 1-2 (Second Packet) Third Packet: This packet will have the next part in the tile, no tile header 1500 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 2 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 1710 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |E841 4526 4556 9850 C2EA .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 5: Header Sample 1-3 (Third Packet) Fourth Packet: Last packet for the image 290 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 3 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 3210 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |A55D 8B73 3B25 25C7 B9EB .... 2FBE B153| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 6: Header Sample 1-4 (Fourth Packet) Leung, et al. Expires October 26, 2008 [Page 24] Internet-Draft JPEG 2000 RTP EX Apr 2008 A.2. Smaple 2: Image with 4 tiles First Packet: This packet will have the whole main header. 210 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 3 | 1 |1| 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF4F FF51 002F 0000 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 7: Header Sample 2-1 (First Packet) Second Packet: This packet will have a first tile part (tile 0) 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 1 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 210 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0000 0000 0578 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 8: Header Sample 2-2 (Second Packet) Third Packet: This packet will have a second tile part (tile 1) 1423 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 1 | 1 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 1610 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0001 0000 058F 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 9: Header Sample 2-3 (Third Packet) Leung, et al. Expires October 26, 2008 [Page 25] Internet-Draft JPEG 2000 RTP EX Apr 2008 Fourth Packet: This packet will have a third tile part (tile 2) 1355 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 1 | 2 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 3033 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0002 0000 054B 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 10: Header Sample 2-4 (4th Packet) Fifth Packet: This packet will have a fourth tile part (tile 3) 1290 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 1 |0| 1 | 3 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 4388 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0003 0000 050A 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 11: Header Sample 2-5 (5th Packet) A.3. Sample 3: Packing multiple tiles in single payload, fragmented header. No header compensation, progressive image First Packet: This packet will have the first part of the main header. 110 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 1 | 0 |1| 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF4F FF51 002F 0000 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Leung, et al. Expires October 26, 2008 [Page 26] Internet-Draft JPEG 2000 RTP EX Apr 2008 Figure 12: Header Sample 3-1 (First Packet) Second Packet: This packet has the second part of the main header. 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 2 | 0 |1| 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 110 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF64 00FF .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 13: Header Sample 3-2 (Second Packet) Third Packet: This packet has two tiles, tile 0 and tile 1 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 0 |1| 1 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 1510 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0000 0000 02BC 0001 FF93 ... | // . // |FF90 000A 0001 0000 02BC 0001 FF93 ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 14: Header Sample 3-3 (Third Packet) Leung, et al. Expires October 26, 2008 [Page 27] Internet-Draft JPEG 2000 RTP EX Apr 2008 Fourth Packet: This packet has one tile, tile 2 1395 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | 0 |0| 1 | 2 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 2910 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0002 0000 0573 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 15: Header Sample 3-4 (4th Packet) A.4. Sample 4: Interlace image, single tile The codestream of each image is ordered in LRCP (Layer, Resolution, Component, Position) with 1 layer, 3 resolutions, 3 components and 1 position. First packet: This packet will have the whole main header for the odd field 210 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 1 | 3 | 1 |1| 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF4F FF51 002F 0000 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 16: Header Sample 4-1 (First Packet) Leung, et al. Expires October 26, 2008 [Page 28] Internet-Draft JPEG 2000 RTP EX Apr 2008 Second packet: This packet will have the first part of the odd field's tile where three jp2-packets are included. 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 1 | 0 | 1 |1| 1 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 210 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0000 0000 0578 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 17: Header Sample 4-2 (Second Packet) Third packet: This packet will have the second part of the odd field's tile 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 1 | 0 | 1 |1| 4 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 1610 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |7F04 E708 27D9 D11D 22CB ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 18: Header Sample 4-3 (Third Packet) Fourth packet: This packet will have the third part of the odd field's tile 1300 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 1 | 0 | 1 |1| 7 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 3010 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |98BD EC9B 2826 DC62 D4AB ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 19: Header Sample 4 (4th Packet) Leung, et al. Expires October 26, 2008 [Page 29] Internet-Draft JPEG 2000 RTP EX Apr 2008 Fifth packet: This packet will have the whole main header for the even field 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 2 | 3 | 1 |1| 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF4F FF51 002F 0000 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 20: Header Sample 4 (5th Packet) Sixth packet: This packet will have the first part of the odd field's tile 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 2 | 0 | 1 |1| 1 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 1610 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |FF90 000A 0000 0000 0578 0001 FF93 .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 21: Header Sample 4 (6th Packet) Seventh packet: This packet will have the second part of the odd field's tile 1400 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 2 | 0 | 1 |1| 4 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 3010 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |626C 42F0 166B 6BD0 F8E1 ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 22: Header Sample 4 (7th Packet) Leung, et al. Expires October 26, 2008 [Page 30] Internet-Draft JPEG 2000 RTP EX Apr 2008 Eighth packet: This packet will have the third part of the odd field's tile 1300 bytes 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 2 | 0 | 1 |1| 7 | 0 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | 0 | 4410 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |8114 41D5 18AB 4A1B ... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 23: Header Sample 4 (8th Packet) Leung, et al. Expires October 26, 2008 [Page 31] Internet-Draft JPEG 2000 RTP EX Apr 2008 Authors' Addresses Andrew Leung Sony Corporation 1-7-1 Konan Minato-ku Tokyo 108-0075 Japan Phone: +81 3 6748-2111 Email: andrew @ ualberta . net URI: http://www.sony.net/ Satoshi Futemma Sony Corporation 1-7-1 Konan Minato-ku Tokyo 108-0075 Japan Phone: +81 3 6748-2111 Email: satosi-f @ sm . sony . co . jp URI: http://www.sony.net/ Eisaburo Itakura Sony Corporation 1-7-1 Konan Minato-ku Tokyo 108-0075 Japan Phone: +81 3 6748-2111 Email: itakura @ sm . sony . co . jp URI: http://www.sony.net/ Leung, et al. Expires October 26, 2008 [Page 32] Internet-Draft JPEG 2000 RTP EX Apr 2008 Full Copyright Statement Copyright (C) The IETF Trust (2008). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Acknowledgment Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). Leung, et al. Expires October 26, 2008 [Page 33]