Services Generation and Adaptation

Transcription

1 SIXTH FRAMEWORK PROGRAMME Integrated Multi-layer Optimization in broadband DVB-S.2 SAtellite Networks FP Deliverable D8-F Services Generation and Adaptation Contractual Date of Delivery to the CEC M24 Actual Date of Delivery to the CEC Author(s) OPT Participant(s) OPT, DEM Workpackage WP3 Dissemination Level Public Nature Report /Prototype Version 2.0 Total number of pages 36 Page 1 of 36

2 Table of Contents 1. INTRODUCTION BROADCAST SERVICES IN IMOSAN PROJECT GENERAL SYSTEM ARCHITECTURE MPEG2 REAL TIME ENCODER H.264 REAL TIME ENCODING MODULE H.264 REAL TIME TRANSCODER REAL TIME DTA AND TRANSRATER MODULE SERVICE ADAPTATION SERVICES GENERATION AND ADAPTATION CONTROL INTERFACE SCHEMA ELEMENTS DEVICE SECTION SOURCEPARAMS SECTION TRANSPORT STREAM PARAMETERS VIDEOPARAMS SECTION AUDIO PARAMETERS PROCESSINGPARAMS SECTION TARGETPARAMS SECTION SERVICECONTROL SECTION OPTIBASE TEST SETUP MPEG2 HD ENCODER SAMPLE SERVICE ADAPTATION SERVICES GENERATION AND ADAPTATION PLATFORM CONCLUSIONS ABBREVIATIONS ANNEX 1. CONFIGURATION SAMPLE (ANALOG IO) ANNEX 1. CONFIGURATION + START COMMAND SAMPLE (ANALOG IO) ANNEX 1. BITRATE CHANGE ON THE FLY COMMAND Page 2 of 36

3 1. Introduction With its rich support for multimedia content creation, adaptation and distribution, and its implementation of the demonstration platform, the IMOSAN architecture provides an excellent platform for delivering end-to-end high quality content to the area where only satellite connection based solution can be economically justified. During recent years, there has been an ever increasing demand for such a robust content delivery solutions for satellite links. The IMOSAN project proposes an integrated management solution which covers the entire audio-visual service distribution chain allowing optimal service adaptation in order to deliver the highest quality TV and interactive services. This deliverable is intended to describe the Services Generation and Adaptation platform architecture, interfaces between the platform modules and Satellite Resource Management System (SRMS), control protocols that provide the functionality for achieving the goals described above. 2. Broadcast Services in IMOSAN project 2.1 General IMOSAN broadcast services are intended to provide high quality TV content over satellite using state of the art compression techniques with addition of adaptive on-the-fly bandwidth management to optimize spectrum usage. The integrated Broadcast TV service generation platform is able to support all major audio and video formats used in DVB-S2. Specially designed common platform interface provides a great flexibility and scalability and allows effortless integration into IMOSAN architecture. Broadcast services generation platform in IMOSAN project provides real-time MPEG2 encoding serivces in standard (SD) and high (HD) definitions, H.264 DTA in SD and HD formats as well as MPEG2 transrating and MPEG2/H.264 encoding and transcoding services. These modules can be configured and controlled both manually (using specially developed test applications) and by SRMS subsystem. Services generation and adaptation platform design to support a scalable architecture and can be based either on the standard 1U CPCI platform or carrier grade high availability platform depending on the deployment scenario. Page 3 of 36

4 2.2 System architecture Figure 1. Broadcast services system architecture. Services generation and adaptation platform comprises the following building blocks: 1. H.264 real time encoder. 2. MPEG2 SD/HD encoder. 3. MPEG2 SD/HD DTA and transrater (SD only). 4. MPEG2 / H.264 transcoder. Page 4 of 36

5 2.3 MPEG2 real time encoder. MPEG2 real time encoder provides IMOSAN platform with legacy SD and HD compression services from analog and digital video and audio sources. Uncompressed sources fed into the encoder, digitized by A/D block (when analog), preprocessed by special Preprocessor block and encoded by the encoder module according to the parameters defined by SRMS subsystem. Encoded elementary streams (ES) are then packetised by adding a packet header to the compressed data. (PES) is defined by MPEG communication protocol. Audio and Video PES then multiplexed by TS Mux module into standard MPEG2 Transport stream which is specified in MPEG-2 Part 1, Systems (ISO/IEC standard ). UDP streamer block with specially designed smoothing mechanism transmits the MPEG2 TS over IP (unicast or multicast) towards IMOSAN system multiplexer. Figure 2. Encoder Block diagram. MPEG2 SD encoder specification. 1 Video Interfaces Digital SDI Analog Composite, S-Video 2 Video formats PAL/NTSC 3 Audio Interfaces Digital AES EBU, Embedded SDI Analog Unballanced Audio 4 Video compression formats MPEG1/2 Page 5 of 36

6 5 Bitrates MBit/s 6 Audio compression formats MPEG1 Layer 2, Dolby Stereo. 7 Bitrates Kbit/s 8 Sampling frequency 32, 44.1, 48 khz 9 Stream format Transport Table 1. MPEG2 SD encoder. MPEG2 HD encoder specification. 1 Video Interfaces Digital HD SDI 2 Video formats PAL/NTSC 3 Audio Interfaces Digital AES EBU, Embedded SDI 2 Video compression formats MPEG2 3 Video Resolutions 1080ix1920/1440/1280@60i,59.94i,50i,24p,23.98p 720x1280@60p,59.94p,50p 4 Bitrates MBit/s 5 Audio compression formats MPEG1 Layer 2, Dolby Stereo. 6 Bitrates Kbit/s 7 Sampling frequency 32, 44.1, 48 khz 8 Stream format Transport Table 2. HD real time encoder. 2.4 H.264 real time encoding module. H.264 real time encoding module has similar to the MPEG2 module architecture. Encoding blocks of this module are capable of encoding state of the art H.264 (AVC) video and MPEG1 L2 and AAC Page 6 of 36

7 audio. Video bitrate and corresponding overall program bandwidth may be controlled dynamically by SRMS. H.264 SD encoder specification. 1 Video Interfaces Digital SDI Analog Composite, S-Video 2 Video formats PAL/NTSC 3 Audio Interfaces Digital AES EBU, Embedded SDI Analog Unbalanced Audio 2 Video compression formats H Video Resolutions CIF Half D1 Full D1 4 Bitrates 256K to 2.0 Mbps 5 Audio compression formats MPEG1 Layer 2, AAC. 6 Bitrates Kbit/s 7 Sampling frequency 32, 44.1, 48 khz 8 Stream format Transport Table 3. H.264 Encoder specification. 2.5 H.264 real time transcoder. H.264 (AVC) real time transcoder will be used for video content generation services with limited bandwidth scenarios providing high video quality using moderate bandwidth. Legacy MPEG2 signal will be transcoded into H.264 format in real time. As depicted in Figure 3, signal received over ASI interface from satellite or any other source of MPEG2 Transport stream over ASI is fed into TS Demux block of the transcoder. Here Video and Audio PIDs as well as special service information from different tables are extracted. Transcoder may be configured to demux specific program from the MPTS source stream and reencode it into H.264 format. Information about source video and audio parameters is detected and may be obtained later by request from the control module. Compressed video is decoded and processed in digital domain. Page 7 of 36

8 H.264 Video encoder configured by SRMS subsystem encodes video, while audio is either reencoded into different format (or same format but with different parameters) or passed through. Encoded elementary streams (ES) then pocketsized by adding a packet header to the compressed data. Audo and Video PES then multiplexed by TS Mux module into MPEG2 Transport stream UDP streamer block with specially designed smoothing mechanism transmits the MPEG2 TS over IP (unicast or multicast) towards IMOSAN system multiplexer. The overall SPTS bandwidth may be dynamically controlled by SRMS (by changing video bitrate on-the-fly ). Figure 3. Transcoder Block diagram. 2.6 Real time DTA and transrater module. DVB demultiplexer will be used to extract the selected program from standard satellite broadcast. The specific program received over ASI interface remultiplexed without altering its format and sent over IP (unicast or multicast). Real time DTA module may recast MPE2 SD/HD and H.264 SD/HD content. Transrater. Based on the DVB Demultiplexer, transrater will be used for MPEG2 SD rate shaping of TV programs. Only video bitrate of the program will be controlled. One Transrater module will be able to handle up to 6 different video programs. Transrater module will support only MPEG2 video. Page 8 of 36

9 MPEG2 SD / HD DTA (digital turn around) Figure 4. DTA / Transrater module block diagram. 2.7 Service Adaptation. Video Services Adaptation functionality greatly improves satellite bandwidth utilization. IMOSAN provides the following service modules: Adaptive transcoding modules, for on-the-fly adaptation of video services, according to the commands from SRMS. Adaptive transrating module for-on-the fly adaptation of bit rate of a service (video format not affected). Both modules comprise specially developed dynamic rate control mechanism with low latency response. When adaptation decision has been taken, SRMS issues corresponding command to the adaptive transcoding/transrating module and the resulting stream changes its video bitrate (and overall stream bandwidth) accordingly. Page 9 of 36

10 2.8 Services generation and adaptation control interface. The Adaptation Platfom control interface based on the SOAP protocol. As the adaptation platform comprises various equipment, MGWWebService module is used for SRMS (or other control application) communication. Figure 5. Service generation and adaptation platform. MGWWebService Web Service interface contains 3 methods for Platform configuration. GetServices ConfigServices Command Returns current system configuration. Configures platform configuration. Command interface. Table 4. Web Service interface. Web service interface essentially moves to/from the platform the xml data, as described below. Page 10 of 36

11 The proposed control interface provides configuration, control and monitoring mechanism for media handling services. Various services generation and adaptation devices located in one platform or many different network nodes may be controlled by one or many applications. Figure 6. Service generation and adaptation schema. Each service is identified by unique ServiceId. Services Device capabilities are determined by particular HW architecture and configuration. In order to operate the service platform, it s components should be properly configured: SourceParams - define which physical interface should receive the signal. ProcessingParams - define what operation should be performed on the stream. TargetParams - define the network target for the output. Page 11 of 36

12 2.9 Schema elements. Service Id. Unique service identifier of the MGW Services. ServiceId is created by adding _X to the service IP, where X is a channel number. For example, ServiceId _1 will be assigned to the first service located on the machine with IP, _2 to the second service based on the same machine. Service Type. Currently Broadcast Service Generation platform can provide the following services: Service Description Encoding Encoding analog or digital video / audio uncompressed signals into different formats, files & streaming. Transcoding Transcoding compressed video/audio into different formats with various parameters changes. Transrating Bit rate reduction (Rate shaping) in compressed video. No format changes. DTA MPTS demultiplexing. MPTS->SPTS. Table 5. MediaGateway Services types Device section. Specific hardware configuration of platform is represented by Device section of the schema. Device is one or more (chain of devices) pieces of interconnected equipment that provide specific Service generation and adaptation functionality. Page 12 of 36

13 Figure 7. Device section diagram. Device section specifies the capabilities of the module, its network interface and other information SourceParams section. This section is intended for accessing the detected source information and configuration of the physical interfaces and pre-processing modules. When received from the Service generation platform, it contains the stream info, when passed to the platform, it should contain configuration parameters. Page 13 of 36

14 Figure 8. SourceParams diagram. Platform modules receive an original content from different sources: ASI_in IP_in Live File One of these interfaces should be selected and configured in order to allow the source stream receiving. When properly configured and initialized, the platform detects and extracts various information from the source material and stores it internally. Page 14 of 36

15 The following information may be detected: Transport stream parameters. EPG. Video elementary stream parameters. Audio elementary streams parameters Live source Live source in the context of Services generation platform is an uncompressed signal that comes form sources live VTR, camera etc. Page 15 of 36

16 Audio Figure 9. Audio source. Page 16 of 36

17 Video Figure 10. Video source Transport stream parameters. When ASI or IP interface is selected and there is a corresponding source connected to this interface, the transcoder module will detect the transport stream parameters and store them into internal database. Page 17 of 36

18 Figure 11. TransportStream section VideoParams section. After specific program in the MPTS (or SPTS) is selected and Service generation platform (transcoder module) is initialized, video parameters are detected and stored internally. Page 18 of 36

19 Figure 12. VideoParams section. Video Coding. Video Processor may be configured to one of the following formats: Video Codecs 1 Mpeg2MP@ML 2 Mpeg2SP@ML 3 Mpeg2_422 4 H264MP Table 6. Video Codecs. Video Resolutions. Page 19 of 36

20 Video Processor may be configured to one of the following resolutions: MPEG2 SD NTSC PAL HD1 320x x x x576 2/3D1 480x x576 3/4D1 528x x x x576 FD1 640x x x x x x576 Table 7. Video Processor Resolutions. MPEG2 HD 1080ix1920/1440/ x i,59.94i,50i,24p,23.98p 60p, 59.94p, 50p Table 8. HD Video Processor Resolutions. H.264 NTSC PAL HD1 320x x576 2/3D1 480x x576 3/4D1 528x x x x x x576 FD1 720x x576 Table 9. Video Processor Resolutions. Page 20 of 36

21 Video Frame Rate. Defines how many pictures one second of video contains. In American TV system NTSC the framerate is 29.97fps and in European PAL system the framerate is 25fps. Color System. Frame Rate 1 FR_SMOOTH_MOTION 2 FR_MIDDLE 3 FR_BEST_QUALITY 4 FR_MAX_FRAME_RATE 5 FPS_1 6 FPS_2 7 FPS_3 8 FPS_4 9 FPS_5 10 FPS_ FPS_25 13 FPS_26 14 FPS_27 15 FPS_28 16 FPS_29 17 FPS_30 Table 10. Frame Rate Values. Encoding modules supports the following color systems: GOP Color System PAL NTSC Table 11. Color System. GOP is considered as ClosedGOP when all the frames in the current GOP can be decoded without previous GOPs. Page 21 of 36

22 Inverse telecine As movies are normally shot using 24.00fps frameate and American TV system, NTSC uses framerate of 29.97fps, movie framerates need to be changed in order to get them play smoothly on TV. This process, where studios add additional frames to the picture in order to increase the framerate, is called telecine. Process where various video editing tools reverse this process is called inverse telecine. In Encoding module (only with digital IO) there is a possibility to remove redundant information from the stream and save some bandwidth (3/2 pull down). In Transcoding service this information also may be retained Audio Parameters. After specific program in the MPTS or SPTS is selected and the corresponding module is initialized, audio parameters are detected and stored internally. Figure 13. AudioParams section. Audio Coding Formats Audio processor may be configured to one of the following coding formats: Coding Formats 1 PCM 2 MPEG1 Layer 2 3 MPEG1 Layer 3 4 Dolby Stereo 8 AAC LC Table 12. Audio coding formats. Page 22 of 36

23 Audio Sample Rate Audio processor may be configured to one of the following sample rates: Audio Sample Rate Table 13. Audio Sampling Rate. 1. Audio Sample Rate can only be configured for Encoding services. 2. There is a tight relationship between audio codec implementation, bit rate and sample rate, so not all of the above sample rates are applicable in all cases ProcessingParams section. This section contains the configuration parameters for the encoders and transcoders. As there are many parameters inside, it is possible to config only some of them. In this case default parameters will be set up by the platform. Page 23 of 36

24 Figure 14. ProcessingParams section TargetParams Section. This section contains configuration parameters for the platform streamers protocols, network interfaces, target params, etc. Page 24 of 36

25 Figure 15. TargetParams section ServiceControl section. This section is intended for the platform control and monitoring. Page 25 of 36

26 Figure 16. ServiceControl section. Command RESET INIT CLEAR_COMMAND_QUEUE START STOP APPLY PAUSE GET_STATUS BIT Description Reset Hardware Initialize service session. Clear internal command queue Start service. Stop service. Apply parameters change on the fly. Pause session. Get service status. Built in test Table 14. Service commands Optibase Test setup. In order to help partners with the control interface development and integration, Optibase has setup the test platform and made it accessible over the Internet. Currently, MPEG2 SD/HD encoder with Page 26 of 36

27 digital (SDI) source is available at the Encoder has Web Service interface for parameters configuration and status/detected info retrieval. Figure 17. Optibase test platform. The platform may be accessed online for integration purposes using any SOAP client. As an example, as depicted in Figure 17, the MPEG2 SD/HD encoder has been accessed using Microsoft Internet explorer. Page 27 of 36

28 Figure 18. OptibaseTest Platform in the IE. There is also Test Application supplied (written in C#) which allows full control of the platform. Test application is capable of presenting the configuration stored as an XML file and communicating with the MGWWebService. Page 28 of 36

29 Figure 19. Test Application MPEG2 HD encoder sample. The below xml file represents the actual response of MPEG2 encoder located at the test platform. <?xml version="1.0" encoding="utf-8"?> <MGW_SERVICES xsi:schemalocation=" xmlns=" xmlns:xsi=" xmlns:epg=" <Service> <ServiceId> _1</ServiceId> <ServiceType>Encoding</ServiceType> <Device> <Board> <BoardId>0</BoardId> <BoardInfo> <BoardName>MovieMaker HD : Bus 0x02 Index 0x00</BoardName> Page 29 of 36

30 </BoardInfo> </Board> </Device> <SourceParams> <Live> <Video> <VideoType>SDI</VideoType> <ColorSystem>1080_59_94i</ColorSystem> </Video> <Audio> <AES3> <Interface>1</Interface> <AudioInterfaceType>UnBalanced</AudioInterfaceType> </AES3> </Audio> </Live> </SourceParams> <ProcessingParams> <InterfaceNo>1</InterfaceNo> <ElementaryStream> <Type>Video</Type> <VideoParams> <VideoBitRate> </VideoBitRate> <FrameRate>FR_MAX_FRAME_RATE</FrameRate> <VideoResolution HorizontalSize="1920" VerticalSize="1080"/> </VideoParams> </ElementaryStream> <ElementaryStream> <Type>Audio</Type> <AudioParams> <AudioCoding>MPEG1 Layer 2</AudioCoding> <AudioMode>Stereo</AudioMode> <SampleRate>48000</SampleRate> <AudioBitrate>224000</AudioBitrate> </AudioParams> </ElementaryStream> </ProcessingParams> <TargetParams> <StreamingProtocol_IP> <IP_Out> <IP> </IP> <Port>11111</Port> <PacketSize>1316</PacketSize> <TTL>127</TTL> </IP_Out> </StreamingProtocol_IP> </TargetParams> </Service> </MGW_SERVICES> Page 30 of 36

31 After encoder configuration the following command should be sent in order to activate the streaming. <Service> <ServiceId> _1</ServiceId> <nsmgw_sc:servicecontrol xmlns:nsmgw_sc=" <ServiceId> _1</ServiceId> <nsmgw_sc:command> <CommandCode>START</CommandCode> </nsmgw_sc:command> </nsmgw_sc:servicecontrol> </Service> To retrieve the status of the unit the following command should be sent: <Service> <ServiceId> _1</ServiceId> <nsmgw_sc:servicecontrol xmlns:nsmgw_sc=" <ServiceId> _1</ServiceId> <nsmgw_sc:command> <CommandCode>GET_STATUS</CommandCode> </nsmgw_sc:command> </nsmgw_sc:servicecontrol> </Service> Current status will be returned in the CurrentStatus field: <Service> <ServiceId> _1</ServiceId> <nsmgw_sc:servicecontrol xmlns:nsmgw_sc=" <ServiceId> _1</ServiceId> <nsmgw_sc:command> <CurrentStatus>Playing</ CurrentStatus > </nsmgw_sc:command> </nsmgw_sc:servicecontrol> </Service> 2.20 Service adaptation. Specially designed adaptation mechanism allows dynamic bitrate change on-the-fly. Currently, only H.264 encoder/transcoder supports this functionality. In order to change the bitrate, new bitrate should be sent to the encoder/transcoder followed by the APPLY command. <?xml version="1.0" encoding="utf-8"?> Page 31 of 36

32 <MGW_SERVICES xsi:schemalocation=" xmlns=" xmlns:xsi=" xmlns:epg=" <Service> <ServiceId> _1</ServiceId> <ProcessingParams> <InterfaceNo>1</InterfaceNo> <ElementaryStream> <Type>Video</Type> <VideoParams> <VideoBitRate> </VideoBitRate> </VideoParams> </ElementaryStream> </ProcessingParams> < nsmgw_sc:servicecontrol Version="1.44" xmlns=" < nsmgw_sc:command> <CommandCode>APPLY</CommandCode> </ nsmgw_sc:command> </ nsmgw_sc:servicecontrol> </Service> </MGW_SERVICES> As depicted in the Figure 20, upon receiving the new bitrate value followed by APPLY command, the service adaptation platform will immediately execute a bitrate change command, providing on the fly adaptation of the broadcast service. Figure 20. Bitrate change on the fly demonstration Services generation and adaptation platform. A low density configuration platform has been selected in order to suit the needs for initial development and integration and significantly reduce cost. It may be seamlessly replaced with more capable platform (with more service modules per chassis) in the real deployment. The platform is based on off the shelf 1U height, 19" chassis compliant with standard racks. Page 32 of 36

33 Figure 21. 1U low density platform. 3. Conclusions. In order to provide a solution for service adaptation in IMOSAN project, the Service Adaptation Platform has been designed and implemented as part of WP3. The Service adaptation platform provides a comprehensive set of broadcast re-purposing tools for content and metadata creation and adaptation. Using IMOSAN Service Adaptation platform, the operator who deploys it will have a tool for high quality video and audio content production, distribution and adaptation under the SRMS management subsystem control. The D8F deliverable describes the Services Generation and Adaptation architecture, modules specifications and internal protocols and structures, the interfaces with the SRMS and a sample configuration. 4. Abbreviations ABBREVIATION MPEG SOAP DTA SD HD CPCI ASI PES ES GOP PAT PMT PCR SPTS MPTS SRMS DESCRIPTION Motion / Moving Pictures Expert Group Simple Object Access Protocol Digital turn around Standard definition High definition Compact PCI Asynchronous serial interface Packetized Elementary Stream Elementary Stream Group of pictures Program Association Table Program Map Tables Program Clock Reference Single Program Transport Stream Multiple Program Transport Stream Satellite Resource Management System Page 33 of 36

34 5. ANNEX 1. Configuration sample (Analog IO) <MGW_SERVICES xsi:schemalocation=" xmlns=" xmlns:xsi=" xmlns:epg=" <Service Version="1.55"> <ServiceId> _1</ServiceId> <SourceParams> <Live> <Video> <VideoType>Composite</VideoType> <ColorSystem>PAL</ColorSystem> </Video> <Audio> <SampleRate>48000</SampleRate> <Analog> <Interface>1</Interface> <AudioInterfaceType>UnBalanced</AudioInterfaceType> </Analog> </Audio> </Live> </SourceParams> <ProcessingParams> <InterfaceNo>1</InterfaceNo> <TransportStream> <Program> <ElementaryStreams> <ElementaryStream> <Type>Video</Type> <VideoParams> <VideoBitRate> </VideoBitRate> <VideoResolution HorizontalSize="720" VerticalSize="576"/> </VideoParams> </ElementaryStream> </ElementaryStreams> <ElementaryStreams> <ElementaryStream> <Type>Audio</Type> <AudioParams> <AudioCoding>MPEG1 Layer 2</AudioCoding> <AudioMode>Stereo</AudioMode> <SampleRate>48000</SampleRate> <AudioBitrate>128000</AudioBitrate> </AudioParams> </ElementaryStream> </ElementaryStreams> </Program> </TransportStream> </ProcessingParams> <TargetParams> <StreamingProtocol_IP> <IP_Out> <NetInterfaceIndex>1</NetInterfaceIndex> <IP> </IP> <Port>11111</Port> <PacketSize>1316</PacketSize> Page 34 of 36

35 <TTL>10</TTL> </IP_Out> </StreamingProtocol_IP> </TargetParams> </Service> </MGW_SERVICES> 6. ANNEX 1. Configuration + Start command sample (Analog IO) <MGW_SERVICES xsi:schemalocation=" xmlns=" xmlns:xsi=" xmlns:epg=" <Service Version="1.55"> <ServiceId> _1</ServiceId> <SourceParams> <Live> <Video> <VideoType>Composite</VideoType> <ColorSystem>PAL</ColorSystem> </Video> <Audio> <SampleRate>48000</SampleRate> <Analog> <Interface>1</Interface> <AudioInterfaceType>UnBalanced</AudioInterfaceType> </Analog> </Audio> </Live> </SourceParams> <ProcessingParams> <InterfaceNo>1</InterfaceNo> <TransportStream> <Program> <ElementaryStreams> <ElementaryStream> <Type>Video</Type> <VideoParams> <VideoBitRate> </VideoBitRate> <VideoResolution HorizontalSize="720" VerticalSize="576"/> </VideoParams> </ElementaryStream> </ElementaryStreams> <ElementaryStreams> <ElementaryStream> <Type>Audio</Type> <AudioParams> <AudioCoding>MPEG1 Layer 2</AudioCoding> <AudioMode>Stereo</AudioMode> <SampleRate>48000</SampleRate> <AudioBitrate>128000</AudioBitrate> </AudioParams> </ElementaryStream> </ElementaryStreams> </Program> </TransportStream> </ProcessingParams> <TargetParams> <StreamingProtocol_IP> Page 35 of 36

36 <IP_Out> <NetInterfaceIndex>1</NetInterfaceIndex> <IP> </IP> <Port>11111</Port> <PacketSize>1316</PacketSize> <TTL>10</TTL> </IP_Out> </StreamingProtocol_IP> </TargetParams> <ServiceControl Version="1.44" xmlns=" <Command> <CommandCode>START</CommandCode> </Command> </ServiceControl> </Service> </MGW_SERVICES> 7. ANNEX 1. Bitrate change on the fly command. <MGW_SERVICES xsi:schemalocation=" xmlns=" xmlns:xsi=" xmlns:epg=" <Service Version="1.55"> <ServiceId> _1</ServiceId> <ProcessingParams> <InterfaceNo>1</InterfaceNo> <TransportStream> <Program> <ElementaryStreams> <ElementaryStream> <Type>Video</Type> <VideoParams> <VideoBitRate> </VideoBitRate> </VideoParams> </ElementaryStream> </ElementaryStreams> </Program> </TransportStream> </ProcessingParams> <ServiceControl Version="1.44" xmlns=" <ServiceId> _1</ServiceId> <Command> <CommandCode>APPLY</CommandCode> </Command> </ServiceControl> </Service> </MGW_SERVICES> Page 36 of 36