MULTICODER™ MC-SCREEN User Guide V1.1
Contents
1. nN 10 FIGURE 8 MPEG VIDEO aaraa a 11 FIGURE 9 H264 VIDEO SETTING 5 co DERE eR 11 FIGURE 10 AUDIO SETTINGS Dr ante aala a 13 FIGURE 11 MULTIPLEXER 14 FIGURE 12 TRANSMIT SETTINGS 404 4004040000 0000 15 FIGURE 18 STATUS INFO BAR Dr eve eee d cte sg ores cepa bera Quaere Do evade ex need eps DER 16 21 an eyevis qroup company IV List of tables TABLE 1 VIDEO ENCODER SETTINGS DESCRIPTION 12 TABLE 2 TRANSMIT SETTINGS 15 TABLE 3 PROFILE AND LEVEL COMBINATIONS OF 2 0 2 17 TABLE 4 AVAILABLE PICTURE TYPES AND CHROMA FORMATS OF THE 2 17 TABLE 5 MAXIMUM VIDEO BITRATES OF MPEG 2 6 1 6 17 TABLE 6 MPEG 2 AVAILABLE FRAMERATES BY USING THE MAIN PROFILE WITH DIFFERENT LEVELS 18 TABLE 7 SUPPORTED CRITERIA OF H 264 PROFILES 0 4 2 nnne nens 18 TABEE 8 RESTRICTIONS OF2. Start Apply Save Status Info Graph status NOTINITIALIZED Multiplexer time 0 day s 00 00 00 000 Encoder status Destination Session name Stream type video Framerate Output bitrate Horizontal size Vertical size 0 fps O kbit s sec Stream type audio CPU Memory 13 MultiCoder MC SCREEN V4 4 62 lt gt TERACUE User Guide V1 1 an eyevis qroup company 2 1 3 6 Multiplexer Tab Settings On this page you can set the Enable padding option to yes or no The yes option means that the stream packets will filled up thus keep the bitrate at a constant level At the Video PID and Audio PID you can set them to a custom number Source Insertion Video encoder Audio encodes Multiplexer Enable padding Yes Video PID 001 Audio PID Sat Status Info Graph status NOTINITIALIZED Multiplexer time 0 day s 00 00 00 000 Encoder status Framerate O fps Output bitrate 0 kbit s sec Horizontal size Destination Session name Stream type video Vertical size CPU Memory Stream type audio Figure 11 Multiplexer settings 14 2 1 3 7 9 TERACUE an eyevis qroup company Transmit Tab Settings On this page you can set and specify where the stream shall be streamed File Preset Help Transmit Dest IP 239 252 20 10
3. l Information about the manual This document is designed to help users setup configure and work with the MC SCREEN If you received this publication as a PDF then it s a good idea to print it out for future reference It is best to use this user guide directly in front of your computer by doing so you try out everything at once st Important features are marked by this sign 9 TERACUE an eyevis qroup company ll Content 1 OVERVIEW c 5 2 MC SCREEN USER 6 2 1 ACCESSING AND CONFIGURING 5 0000 0 000 00 00000 6 2 1 1 Pilolelle io aN irioD Em 6 2 1 2 Watchdog of MC SCREEN 2 2 15 000 0000000000 000000600 itane 7 2 1 3 MC SCHREEN Configuration 7 2 1 3 1 Apply Save 8 2 1 3 2 Source 5 2 9 2 1 3 3 Insertion Tab Settings een rete Der 10 2 1 3 4 Video encoder Tab 11 2 1 3 5 Audio encoder Tab 2 13 2 1 3 6 Multiplexer Tab 0 2
4. 264 LEVELS nag n Rene deae 19 TABLE 9 AVAILABLE AUDIO BITRATES AND SAMPLE RATES OF MPEG 1 AND MPEG 2 AUDIO 20 22
5. 352 480 v Y MP LL 320x240 M v y y 352x240 352x288 A Table 6 MPEG 2 Available framerates by using Main Profile with different levels 3 2 264 guidelines H 264 also known as MPEG 4 part 10 supports profiles and levels too The profiles support different encoding criteria and the levels restrict the encoding parameters See the Table 7 and the Table 8 Baseline Profile Main Profile High Profile and P Slices 4 JS 4 B Slices vA SI SP Slices Multiple Reference Frames A vA vA In Loop Deblocking Filter vA vA vA CAVLC Entropy Coding A CABAC Entropy Coding WA WA Flexible Macroblock Ordering FMO JS Arbitrary Slice Ordering ASO vA Redundant Slices RS vA x Data Partitioning Interlaced Coding PicAFF MBAFF 4 2 0 Chroma Format A vA 4 4 2 2 Chroma Format 4 4 4 Chroma Format 8 Bit Sample Depth vA S 7 9 and 10 Bit Sample Depth 11 and 12 Bit Sample Depth 8x8 vs 4x4 Transform Adaptivity lt Quantization Scaling Matrices v4 Separate Cb and Cr QP control Monochrome Video Format Residual Color Transform Predictive Lossless Coding Table 7 Supported criteria of H 264 profiles 18
6. Table 3 Profile and level combinations of MPEG 2 Picture type LP I Chroma format 4 2 0 4 2 0 4 2 0 or 4 2 0 or 4 2 2 4 2 2 Table 4 Available picture types and chroma formats of the MPEG 2 profiles Profile Main Profile 4 2 2 Profile High Profile High Level 80 Mbps 300 Mbps 100 Mbps High 1440 Level 60 Mbps 80 Mbps Main Level 15 Mbps 15 Mbps 50 Mbps 20 Mbps Low Level 4 Mbps Table 5 Maximum video bitrates of MPEG 2 profiles levels The profiles and levels have also the following abbreviations Profiles Simple Profile gt SP Main Profile 2 MP 4 2 2 Profile gt 422 High Profile 2 HP Levels High Level 2 HL High 1440 Level gt H144L Main Level gt ML Low Level gt LL The usage of a specific profile with a specific level will be shown with a sign For example MP ML means that you use the Main Profile with the Main Level 17 lt TERACUE an eyevis qroup company Framerates in fps 4 Progressiv Interlaced 23 97 25 29 97 30 50 59 94 25 29 97 30 MP HL 1920x1088 x y VI Y 1 MP H144L 1280x720 Y Y 1440x1088 Y yY v Y v MP ML 704x480 Y JS S JS v 720x480 704x576 Y VS 720x576 640x480 y y 1 fi 1 544x576 VAR Sf 544 480 AR A M v v y v 352x576 VAR
7. lt TERACUE an eyevis qroup company Table 8 includes the following abbreviations for the word macro block and for the word motion vector macro block motion vector gt MB gt MV Max Max Bit Max MV s rate for Max Level Do Frame Baseline ate for Frame Reference Bee MB s sec size in High rate in consecutive and Main Resolution Frames MB s Profile Profile MB s 1 1485 99 64 bps 80 kbps 176x144 15 4 1 1 3000 396 192 kbps 240 176x144 30 9 kbps 320x240 10 3 352x288 7 5 3 1 2 6000 396 384 kbps 480 352x288 15 6 kbps 1 3 11880 396 768 kbps 960 352x288 30 6 kbps 2 11880 396 2 Mbps 2 5 352x288 30 6 Mbps 2 1 19800 792 4 Mbps 5 Mbps 352x480 30 6 x 352x576 25 2 2 20250 1620 4 Mbps 5 Mbps 720x480 15 5 720x576 12 5 3 40500 1620 10 Mbps 12 5 720x480 30 5 32 Mbps 720x576 25 3 1 108000 3600 14 Mbps 17 5 1280x720 30 5 16 Mbps 3 2 216000 5120 20 Mbps 25 1280x720 60 4 16 Mbps 4 245760 8192 20 Mbps 25 1920x1088 30 4 16 Mbps 1280x720 60 4 1 245760 8192 50 Mbps 62 5 1920x1088 30 4 16 Mbps 1280x720 60 4 2 491520 8192 50 Mbps 62 5 1920x1088 60 4 16 Mbps 5 589824 22080 135 Mbps 168 75 2048x1024 72 5 16 Mbps 5 1 983040 36864 240 Mbps 300 2048x1024 120 5 16 Mbps 4096x2048 30 Table 8 Restrictions of H 264 levels 19 4 Audio encoding guidelines S TERACUE an
8. 1 3 1 Save Button X9S TERACUE an eyevis qroup company At all pages you have two options to save the settings The first one is to click on the Apply button see at Figure 5 In this case the settings will be set temporarily so if you restart the application these settings will be lost and the saved settings are loaded and shown The other option is to save settings permanently via the Save button As this way the settings will keep also after restart Source Insertion Video encoder Audio encoder Multiplexer Transmit Transmit Dest IP 239 252 1 100 Dest Port 4444 Protocol UDP 2 wer Status Info Encoder status PLAYING Framerate Destination 239 252 1 100 4444 Output bitrate Session name MultiCoder Horizontal size Stream type video H 264 Vertical size Stream type audio AAC CPU Memory Adapter 192 168 0 24 SAP MultiCoder Graph status SUCCEEDED Multiplexer time SAPInfo Teracue AG streami 0 day s 00 00 00 000 8 fps 0 kbit s sec 720 px 576 px 29 91 Figure 5 Save or Apply button MultiCoder MC SCREEN V4 4 62 lt gt TERACUE User Guide V1 1 an eyevis group company 2 1 3 2 Source Tab Settings As first step you must specify which screen area shall be streamed You can select the full screen mode Fullscreen check box or define a rectangle screen are
9. 240000 0 0 nennen 14 2 1 3 7 Transmit Tab 15 2 1 3 8 Start Stop Encoding Process and the Status Info 16 3 VIDEO ENCODING 17 3 1 MPEG 2 VIDEO GUIDELINES 2 222 iae ea cute ect euet eet eee cte eger tein rece nere 17 3 2 264 GUIDEPINES vue e ovn oe ut ecran c Ru 18 4 AUDIO ENCODING GUIDELINES 20 4 1 MPEG 1 AND MPEG 2 AUDIO GUIDELINES eese 20 9 TERACUE an eyevis qroup company 1 Overview MultiCoder is the product family name of a variety of live stream encoder and transcoder engines which are introduces below MC SCREEN MC SCREEN encodes any local desktop and screen applications such as PowerPoint Excel Word Websites including embedded video etc MC SCREEN supports HD resolution for detailed reproduction of text figures and fine details It enables exclusive software encoding for usually installed PC s and laptops without grabber card MC VGA DVI MC VGA DVI encodes external desktop and screen signals such as PowerPoint Excel Word Websites including embedded video etc with VGA DVI input MC VGA DVI supports HD resolution
10. 576 px 37 102 MB Figure 13 Status info bar 16 lt TERACUE an eyevis qroup company 3 Video encoding guidelines When you use the MultiCoder we recommend using the supplied presets Please note You can freely change all parameters the advanced settings of the MultiCoder but some parameter combinations have possibly no function To set correct parameters in the advanced settings of the MultiCoder you must have a good knowledge about the MPEG 2 and H 264 standard For example you use the Main Profile and the Main Level for a MPEG 2 encoding and you want to enter a bitrate of 20 Mbit s But the MPEG 2 standard restricts the maximum bitrate of the Main Level to 15 Mbit s so you not able to set the bitrate to 20 Mbit s You have set the MPEG Level to High Level to do so The following chapters deliver a small insight of the MPEG 2 and H 264 standard guidelines 3 1 MPEG 2 video guidelines MPEG 2 supports different profiles and levels which can be combined The following tables shows the profile and level combinations see Table 3 available picture types and chroma formats of the existing profiles see Table 4 the maximum bitrates of profiles levels see Table 5 and the available frame rates see Table 6 Simple Profile Main Profile 4 2 2 Profile High Profile High Level A High 1440 Level Main Level mi A Low Level
11. SCREEN or simply start a shortcut called MC SCREEN on your desktop 2 1 1 Application startup When you start the application a loading screen appears see Figure 1 After the loading screen two icons appear at your desktop taskbar The first one is the MC SCREEN client icon and the second one is the MC SREEN watchdog icon Figure 1 Application start screen MultiCoder MC SCREEN V4 4 62 S TERACUE User Guide V1 1 eyevis group company 2 1 2 Watchdog of MC SCREEN see Figure 2 The watchdog application is running to guarantee stability of the MC SCREEN 9 If you double click on the watchdog icon at your taskbar the Watchdog window appears You can list the client process properties See Figure 3Figure 3 Watchdog window Figure 2 Watchdog icon f amp Watchdog mm Watchdog j Multicoder Client exe Multicoder Client ApplicationName ApplicationName Multicoder Client exe Memory MB Memory MB 70 26953 NonPagedMemory MB NonPagedMemory MB 0 06 VirtualMemory MB VirtualMemory MB 308 27 ProcessorLoad ProcessorLoad 0 00 Timestamp A Timestamp 2012 04 23 17 35 08 Figure 3 Watchdog window 2 1 3 MC SCREEN Configuration You can open the graphical user interface of MC SCREEN via the MC SCREEN Client icon 9 by making a double click on this icon Figure 4 MC SCREEN icon MultiCoder MC SCREEN 4 4 62 User Guide V1 1 2
12. eyevis qroup company 41 1 MPEG 2 audio guidelines Sample rates in kHz MPEG Version 22 05 24 32 1 Layer 32 448 32 448 32 448 kBit s kBit s kBit s Layer Il 32 384 32 384 32 384 kBit s kBit s kBit s Layer Ill 32 320 32 320 32 320 kBit s kBit s kBit s MPEG 2 Layer 32 256 32 256 32 256 kBit s kBit s kBit s Layer Il 8 160 8 160 8 160 kBit s kBit s kBit s Layer Ill 8 160 8 160 8 160 kBit s kBit s kBit s Table 9 Available audio bitrates and sample rates of MPEG 1 and MPEG 2 audio 20 an eyevis qroup company Ill List of figures FIGURE 1 APPLICATION START 6 FIGURE 3 WATCHDOG WINDOW 7 FIGURE2 WATCHDOG ERE 7 FIGURE 4 5 255506 ceo ebore exec tag 7 FIGURE 5 SAVE OR APPLY BUTTON 6 8 FIGURE 6 SOURCE TAB 9 7 paul issue
13. for detailed reproduction of text figures and fine picture textures It has a VGA DVI grabber card MC ENC Multiformat encoder and live stream transmitter with video and audio input MC ENC supports Composite CVBS Y C S Video SDI and Component YUV signals via different video grabber cards MC TRANS MC TRANS enables transcoding and transrating of existing IPTV live streams Allows stream modification and on the fly conversion of stream parameters such as MPEG format bitrate bitrate type CBR VBR resolution GOP structure and much more MC ROUTE MC ROUTE is an application for converting routing and bridging different streaming types It is designed for streaming to external locations for WAN transmissions or for the adaptation and alignment of live streams within an IPTV system Multiple live input streams can be modified to unicast multicast or multiple unicast multicast streams MultiCoder MC SCREEN V4 4 62 TERACUE User Guide V1 1 group company 2 MC SCREEN User Guide This chapter gives you an overview over MC SCREEN and demonstrates the software s main functions You need to install an application and configuring software You can configure the application with the client software 2 1 Accessing and Configuring MC SCREEN To start the application you must go to the start menu and click to Programs gt Teracue gt Multicoder gt MC SCREEN gt MC SCREEN to open the main page of the MC
14. 0 Source Insertion Video encoder Audio encoder Multiplexer m Dest Port 4444 2 Adapter 192 168 0 24 SAP Name MultiCoder SAP Info Teracue AG streami Protocol Start Apply Status Info Graph status Encoder status Destination Session name Stream type video Stream type audio NOTINITIALIZED Multiplexer time 0 day s 00 00 00 000 Framerate O fps Output bitrate 0 kbit s sec Horizontal size Vertical size CPU Memory Settings Description Dest IP Figure 12 Transmit settings Specifies the destination IP address which should the MC SCREEN use for the output stream If you want to stream a multicast stream Please enter in the IP address field your desired multicast IP address e g 239 252 20 100 If you want to stream a unicast stream Enter in the IP address field the IP address of the destination e g the IP address of a 2001 Dest Port Specifies the port number of the output stream TTL Specifies the number of routers switches routers switches the stream is allowed to travel pass how many Adapter Specifies the IP address of the used network card in which the desired output stream will be sent If several network ports are used the MC SCREEN lists all detected network port in this drop down field SAP Name Specifies the session name
15. F Width 720 Resize type Mitchell Netravali length 12 Start Status Info Graph status NOTINITIALIZED Encoder status Destination Session name Stream type video Stream type audio Multiplexer time Framerate Output bitrate Horizontal size Vertical size CPU Memory Figure 8 MPEG2 video settings Bcount 0 day s 00 00 00 000 O fps 0 kbit s sec Source Insertion Video encoder audio encoder Multiplexer Transmit Video Encoder Video format H 264 Profile High Video preset Bitrate kbit sec 6000 Bitrate mode Constantbitrate v Bitrate max 8000 Entropy coding Status Info Graph status NOTINITIALIZED Encoder status Destination Session name Stream type video Stream type audio F Width 720 Resize type Mitchell Netravali GOP length 66 E Bcount 2 Aspect Yes AspetX CPB size bytes Multiplexer time Framerate Output bitrate Horizontal size Vertical size CPU Memory 0 day s 00 00 00 000 O fps 0 kbit s sec Figure 9 H264 video setting lt TERACUE an eyevis qroup company 11 Settings Description Video preset lt lt TERACUE an eyevis qroup company Specifies the output video format with the chosen profiles Depending on the selected video format the individu
16. MultiCoder MC SCREEN V4 4 62 S TERACUE User Guide V1 1 aroup company MULTICODER MC SCREEN User Guide V1 1 Teracue eyevis GmbH Schlossstr 18 85235 Odelzhausen Germany Tel 49 0 8134 555 10 Fax 49 0 8134 555 199 info teracue com www teracue com Document Version 1 1 130307 CRE 9 TERACUE an eyevis qroup company COPYRIGHT This document may not be reproduced in any form in whole or in part without the prior permission of Teracue eyevis GmbH Copyright 2014 by Teracue eyevis GmbH all rights reserved DISCLAIMER This publication supersedes all previous publications Information and specification in this documentation is subject to change without notice Please make sure you have the latest document version User guides are located at www teracue com support If you find some points in this document unclear then please let us know so we can improve this documentation Thank you Mail to documentation teracue com All information within this document is confidential to Teracue eyevis GmbH costumers and should not be copied or distributed to non Teracue eyevis GmbH customers TRADEMARKS MC SCREEN and all of its components are registered trademarks licensed to Teracue eyevis GmbH All other logos and trademarks both marked and not may be trademarks or registered trademarks and therefore property of their respective owners 9 TERACUE an eyevis qroup company
17. a with the X1 X2 Y1 and Y2 pixel points fields In the Source tab you can also set the audio source the audio format and the frame rate FPS field of the stream Preset J Source insertion Video encoder Audio encoder Multiplexer Transmit Source FPS 25 Audio Device Audio Source Fullscreen Audio Format start Apply J Save Status Info Reset Graph status NOTINITIALIZED Multiplexer time 0 day s 00 00 00 000 Encoder status Framerate Ofps Destination Output bitrate Okbit s sec Session name Horizontal size Stream type video Stream type audio Vertical size CPU Memory Figure 6 Source tab 9 TERACUE an eyevis qroup company 2 1 3 3 Insertion Tab Settings On this tab you can insert a text or an image to the streamed screen You have three types to add The bitmap text and time insertion To use the inserter you first have to enable the Use Inserter check box Multicoder Client MC SCREEI File Preset Source Insertion video encoder Audio encoder Multiplexer Transmit Bitmap Insertion Bitmap Path Jocuments Teracu Bitmap Delete Insert Custom 30 AlphaR 255 AlphaG 255 AlphaB 255 Text Insertion Text My Cusrom text Insert Custom X PosY 80 Time Insertion Insert Custom V Use Inse
18. al options like Resolution have different selectable variables Width Specifies the video encoding resolution The available resolutions Height depend on the chosen video format Resize type Only available if you use custom resolution B Spline Notch Catmull Rom spline Mitchell Netravali Bitrate kbit sec Specifies the used video bitrate of the output stream For the case when you have chosen the variable bitrate as the bitrate mode The Bitrate field specifies the average bitrate To set the maximum bitrate you must use the Bitrate max field 1 The maximum bitrate is limited by the used MPEG 2 or H 264 level Bitrate mode Specifies the used bitrate mode of the output stream You can switch between constant or variable bitrate It modify the output bitrate what you can detect on the status info bar Bitrate min kbit s Specifies the used minimum bitrate of the output stream when variable bitrate mode is chosen d The minimum bitrate is only available for MPEG 2 Bitrate max kbit s Specifies the used maximum bitrate of the output stream when variable bitrate mode is chosen 1 The maximum bitrate is limited by the used 2 or H 264 level GOP length The GOP is a group of successive pictures within a coded video stream GOP always begins with an I frame Afterwards several P frames follow in each case with some frames distance In the remaini
19. ng gaps are B frames A few video codec s allow for more than one I frame in a GOP B count Specifies the value of used B frames Entropy coding Specifies the used entropy coding type CAVLC Context adaptive Variable Length Coding or CABAC Context based Adaptive Binary Arithmetic Coding This field appears only when H 264 is chosen in the Video preset field Aspect Enables Disables the aspect ratio usage Aspect X Specifies the aspect ratio in X coordinate Aspect Y Specifies the aspect ratio in Y coordinate CPB Size bytes Specifies the size of the coded picture buffer CPB The buffer size will be changed automatically and depends at the entered bitrate This field appears only when H 264 is chosen in the Video preset field ala We recommend not changing the CPB buffer size Table 1 Video Encoder settings description MultiCoder MC SCREEN 4 4 62 S TERACUE User Guide V1 1 an eyevis qroup company 2 1 3 5 encoder Tab Settings To enable audio encoding you must select an audio source at the Source tab Then you can choose in the Audio encoder tab the encoding type which you want to use MPEG2 or ACC You can set the audio bitrate too See Figure 10 File Preset Source Insertion Video encoder Audio encoder Multiplexer Transmit Audio Settings Audio type Audio v Bitrate kbit sec 64
20. of the stream which is attached in the SAP messages SAP Info Specifies the description of your session Protocol Specifies the stream mode protocol type UDP RTP over UDP transport RTP over UDP SAP Here you can turn on off the SAP message Table 2 Transmit settings description 15 MultiCoder MC SCREEN 4 4 62 User Guide V1 1 lt TERACUE eyevis group company 2 1 3 8 Start Stop Encoding Process and the Status Info Bar Next the Apply button you can find a Start check box with it you can start to grab your screen and to stream it into the network So enable the Start check box and click on the Apply or Save button Then the streaming starts You can check the streaming status options on the status info bar See Figure 13 72 Transmit Dest IP Adapter Protocol Source Insertion Video encoder Audio encoder Multiplexer Transmit 239 252 1 100 Dest Port 4444 192 168 0 24 v SAP MultiCoder Status Info Graph status Encoder status Destination Session name SUCCEEDED Multiplexer time PLAYING Framerate 239 252 1 100 4444 Output bitrate MultiCoder Horizontal size Stream type video H 264 Vertical size Stream type audio AAC CPU Memory 64 Teracue AG streami 0 day s 00 00 15 658 7 fps 2202 kbit s sec 720 px
21. osition in the position mode drop down field and the Pos X Pos Y fields With the position mode drop down field you define whether the text shall be inserted at a specific position Custom or a general position Top Left Top Center etc If you choose a specific position you must also specify the accurate position of the text with the Pos X Pos fields Time Insertion To show the current time on the stream you should enable the time inserter check box The time format is YYYY MM DD HH MM SS You can modify the size of the time text With the position mode drop down field you define whether the time shall be inserted at a specific position Custom or a general position Top Left Top Center etc If you choose a specific position you must also specify the accurate position with the Pos X Pos Y fields 10 MultiCoder MC SCREEN 4 4 62 User Guide V1 1 2 1 3 4 At video encoder tab settings you can choose the video encoding format It can be MPEG2 or H264 Video encoder Tab Settings Each format has its own settings which are described in Table 1 Fie Preset Source Insertion Video encoder Audio encoder Multiplexer Transmit Video Encoder Video format MPEG2 Profile Main profile Video preset Bitrate kbit sec 12000 Bitrate min 2000 Bitrate max 12000 Bitrate mode Constant Aspect ratio Default
22. rter Apply Start Apply Save Status Info Graph status NOTINITIALIZED Multiplexer time 0 day s 00 00 00 000 Encoder status Framerate O fps Destination Output bitrate 0 kbit s sec Session name Horizontal size Stream type video Vertical size Stream type audio CPU Memory Figure 7 Text Insertion Bitmap Insertion If you want to insert a bitmap e g a logo on the stream you must enable the bitmap insertion check box With the position mode drop down field you define whether the bitmap shall be inserted at a specific position Custom or a general position Top Left Top Center etc If you choose a specific position you must also specify the accurate position of the picture with the Pos X Pos Y fields You can set an alpha colour with the AlphaR red component AlphaG green component and AlphaB blue component fields This defined alpha color will be shown as transparent on the stream At the Bitmap Add button you can add new images to the list the added pictures will be converted automatically to bmp files With the Delete button you can delete the current selected image from the list Text Insertion You can insert a custom text to the screen See Figure 7 To do this you must enable the text insertion check box Then specify the custom text in the text field the font size of the text in the Size field and the insertion p
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