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GUIDE TO INSTALLATION AND OPERATION

IRD-3811

Table of Contents

IRD-3811 HD/SD MPEG Decoder with ASI and RF inputs ...................................................... 1

1.1

Using this Manual................................................................................................................................ 1

1.2

Introduction ......................................................................................................................................... 1

1.3

Features .............................................................................................................................................. 1

1.4

Applications ......................................................................................................................................... 3

1.5

Block Diagrams ................................................................................................................................... 4

1.6

Front Card-edge Interface ................................................................................................................... 5

1.7

Physical Layout – IRD-3811 with Tuner and CAM modules ............................................................... 5

Installation ................................................................................................................................ 6

2.1

Installation in the Densité frame .......................................................................................................... 6

2.2

Rear Panels ........................................................................................................................................ 6

2.3

Connections ........................................................................................................................................ 6

2.4

Installation of the Conditional Access Module (CAM) ......................................................................... 7

Operation .................................................................................................................................. 8

3.1

Control options .................................................................................................................................... 8

3.2

Card-Edge Status LED ....................................................................................................................... 8

3.3

Local control using the Densité frame control panel ........................................................................... 9

3.3.1

Overview ................................................................................................................................ 9

3.3.2

Menu for local control ............................................................................................................. 9

3.4

Remote control using iControl ........................................................................................................... 10

3.4.1

The iControl graphic interface window ................................................................................. 10

3.4.2

The

Input

panel .................................................................................................................... 14

3.4.3

Tuner panels ........................................................................................................................ 15

3.4.4

The

Conditional Access

panel ............................................................................................. 17

3.4.5

The

ASI Output

panel .......................................................................................................... 18

3.4.6

The

Decoder

panel .............................................................................................................. 19

3.4.7

The

Video Output

panel ....................................................................................................... 19

3.4.8

The

Video Processing

panel ................................................................................................ 22

3.4.9

The

Audio Config

panel ....................................................................................................... 23

3.4.10

The

Audio Processing

panel ................................................................................................ 24

3.4.11

The

Reference

panel ........................................................................................................... 25

3.4.12

The

Probing

panel ................................................................................................................ 26

3.4.13

The

Test

panel ..................................................................................................................... 28

3.4.14

The

Video / Audio Proxy

panel ............................................................................................ 29

3.4.15

The

Network Settings

panel ................................................................................................. 30

3.4.16

The

Factory/Presets

panel ................................................................................................... 32

3.4.17

The

Options

panel ................................................................................................................ 35

3.4.18

The

Alarm Config

panel ....................................................................................................... 37

3.4.19

The

Info

panel ...................................................................................................................... 40

User Reference Guide ............................................................................................................ 43

4.1

Decoding MPEG Transport Streams ................................................................................................ 43

4.2

Decoding Audio ................................................................................................................................. 43

4.3

MPEG AV Synchronization ............................................................................................................... 44

Summary of Contents for DENSITE IRD-3811

Page 1: ...ecoder with ASI and RF Inputs Guide to Installation and Operation M837 8800 104 12 June 2014 Miranda Technologies 3499 Douglas B Floreani St Laurent Québec Canada H4S 2C6 Tel 514 333 1772 Fax 514 333 9828 www miranda com 2014 Miranda Technologies ...

Page 2: ...equirements of the EMC directive 2004 108 CE EN 55022 Class A radiated and conducted emissions EN 61000 3 2 Harmonic current injection EN 61000 3 3 Limitation of voltage changes voltage fluctuations and flicker EN 61000 4 2 Electrostatic discharge immunity EN 61000 4 3 Radiated electromagnetic field immunity radio frequencies How to contact us For technical assistance please contact the Miranda Te...

Page 3: ...9 3 3 2 Menu for local control 9 3 4 Remote control using iControl 10 3 4 1 The iControl graphic interface window 10 3 4 2 The Input panel 14 3 4 3 Tuner panels 15 3 4 4 The Conditional Access panel 17 3 4 5 The ASI Output panel 18 3 4 6 The Decoder panel 19 3 4 7 The Video Output panel 19 3 4 8 The Video Processing panel 22 3 4 9 The Audio Config panel 23 3 4 10 The Audio Processing panel 24 3 4 ...

Page 4: ... Rating Information 44 4 5 Using the Up Down Cross Option 45 4 6 About AFD processing 45 4 7 Using the TS Probing Option 49 4 8 Using the video proxy streaming 49 5 Specifications 50 ANNEX 1 Local Control Panel User Interface 52 ANNEX 2 Dolby Metadata Profiles 55 ...

Page 5: ...y performing IP encapsulation of the input transport stream in either RTP or UDP mode The IRD also provides optional video signal processing with frame synchronization and selectable delay as well as proc amp up down cross conversion and aspect ratio conversion The IRD can decode an extensive range of Metadata such as EIA 708 compliant Closed captioning Teletext AFD and V Chip which can be embedde...

Page 6: ... in various resolutions extending to 1920x1080i and at various frequencies Output formats include o 1920x1080i 59 94 o 1920x1080i 50 o 1280x720p 59 94 o 1280x720p 50 o 720x486i 59 94 o 720x576i 50 Comprehensive Audio Decoding Decoding of MPEG 1 Layer 2 stereo audio Support of Dolby Digital AC 3 2 0 audio Optional decoding and embedding of Dolby Digital AC 3 5 1 audio to SDI with support of main an...

Page 7: ...r STT data o Channel number and other VCT parameters o Event description and EIT Event Information Table o Rating and other RRT data o Dolby metadata o TSID Transport Stream Probing and Alarming Transport Stream TS monitoring alarming and settings o TR 101 290 Priority 1 and Priority 2 alarming on key parameters o TS Bit rate o TS ID and number of programs as identified in PAT o Network ID and nam...

Page 8: ...GUIDE TO INSTALLATION AND OPERATION 4 IRD 3811 1 5 Block Diagrams The following block diagrams show the functionality of the IRD 3811 ...

Page 9: ...Layout IRD 3811 with Tuner and CAM modules The IRD 3811 consists of a base IRD 3811 card with a tuner module either ATSC or DVB S2 and optionally a conditional access module CAM The tuner is installed at the rear of the card with its RF input available on the rear panel of the Densité frame The CAM is installed at the front of the card so that the smart card can be inserted from the front of the D...

Page 10: ...P Rear Panel for the IRD 3811 2 3 Connections The rear panel connections are as follows REF IN External reference input For external synchronization connect a black studio reference signal to the BNC labeled REF IN The reference input must conform to SMPTE 170M SMPTE 318M ITU 624 4 BUT 470 6 for standard definition signals and SMPTE 274M SMPTE 296M for high definition signals and is used to phase ...

Page 11: ...at COMP OUT Not used AUDIO OUT L R Not used ETH Gigabit Ethernet configurable as input or output RF IN connect an RF input appropriate for the installed tuner ATSC if the ATSC tuner is installed DVB S S2 RF if the DVB S2 tuner is installed 2 4 Installation of the Conditional Access Module CAM The Conditional Access Module CAM is installed into the IRD 3811 via the front panel Depending on the cond...

Page 12: ...show the most severe detected error status that it is configured to display and in the chart error severity increases from left to right with green representing no error disabled and flashing red the most severe error Alarm Name Error Report Led Color Description Green Yellow Red Flashing Red Card booting X After power up the led becomes yellow until Linux is properly booted takes about 40s Hardwa...

Page 13: ...d flashes yellow The local control panel displays a menu that can be navigated using the four pushbuttons located beside the display The functionality of the pushbuttons is as follows Used for menu navigation and value modification SELECT Gives access to the next menu level When a parameter value is shown pushing this button once enables modification of the value using the and buttons a second pus...

Page 14: ...ification line across the top gives the card type IRD 3811 and the slot number where the card installed in its Densité frame There are three main sections in the window identified in figure 3 2 Section 1 The Status Icon area shows a series of eleven icons that report the status of some card parameters The table shows the various forms that may appear icons are numbered left to right Icon 1 Manual ...

Page 15: ...3 Decoded Video status green Signal detected and valid The format HD or SD will be indicated beneath the icon red No signal No rear Reference mismatch Format mismatch with output format Key Fill mode Video TRS error gray No transport stream Icon 4 Video Sync Status green OK Locked on incoming PCR yellow Free run gray No signal Icon 5 Primary Audio status green OK yellow No audio in program ...

Page 16: ...audio in program gray No signal Icon 7 Audio Sync green Locked with Video yellow Free run gray N A Icon 8 TS Limit green No errors red Errors detected gray No transport stream Icon 9 Reference green Locked to external reference Mouse over the icon to see a description of the reference in use red Reference missing ...

Page 17: ...ground Section 2 The left hand side of the panel contains a series of buttons that control the contents of the main window section 3 Click on one to access the indicated controls The selected button is highlighted darker and the main panel heading matches the button name Some of the buttons will be different depending on which model of the IRD 3811 is in use This section can be hidden or revealed ...

Page 18: ...rnet The Selected and Presence icons show which input is currently selected and which ones are currently available Auto Switch Delay Use the slider or type a value directly into the data box to set the time the card will wait before switching automatically to another valid input if the current TS signal fails Output on Error Use the radio buttons to set the behavior of this IRD 3811 in the event o...

Page 19: ...aph will show the signal status as Poor with the bar red and on the left side of the display Use the Select Channel pulldown to select a channel from those available in the signal or use the Scan button to scan through the channels to find a program stream The Frequency data box shows the frequency of the currently selected channel 3 4 3 2 The Tuner DVB S2 panel IRD 3811 DVB S2 models only Tuning ...

Page 20: ... 0 35 Spectral Inversion If the L O of the LNB downconverter is higher than the satellite downlink frequency the downconverted spectrum will be inverted and must be re inverted in the tuner Not Inverted Inverted Automatic DVB S2 Pilot The pilot tone may be included in the DVB S2 signal and detecting it may be required for locking on to the signal Not available in DVB S mode Use the radio buttons t...

Page 21: ...a conditional access module are installed This panel and its access button will not appear for IRD 3811s with an ATSC tuner CAM status The icon is green when a valid CAM card is detected in the card reader CAM ID CAM card identifier Manufacturer ID Identifies the manufacturer of the CAM card currently installed Supported CA Systems a list of all the encryption systems supported by the installed CA...

Page 22: ...5 MHz 4 16 MHz The Common Interface standard calls for a 9 MHz maximum clock speed and most CAMs will operate properly with an 8 33 MHz clock Some older CAMs don t quite meet the Common Interface standard and will only operate at lower clock speeds Some professional CAMs because of the higher bit rate will require a faster clock Remember that the maximum bit rate that can be processed by the CAM i...

Page 23: ...CR packet Service Selection Mode use the pulldown to choose how the service to be decoded is selected Manual decode the service selected in the Service Select pulldown If the service is not present in the TS nothing is decoded Auto if the service selected in the Service Select pulldown does not exist or if none is specified the card decodes the first service found Currently Selected Service Video ...

Page 24: ... input AUTO or the AFD that is always used MANUAL Change Click the Change button to open the Select AFD panel showing the available AFD codes that could be used as the default Click on one to select it then click Apply or OK at the bottom of the panel Flags This section gives information about AFD flag management Presence the status icon is green if AFD flags are detected in the input data stream ...

Page 25: ...use the pulldown to select between Auto insert the Dolby metadata from the input stream if available otherwise insert the out put of the IRD 3811 s internal generator Generator insert Dolby metadata from the internal generator at all times when insertion is ON Dialnorm Override select the checkbox to override the dialnorm value included in the metadata and use the pulldowns in the Generator Config...

Page 26: ...tab This panel reports the status of Dolby metadata associated with the two audio programs 3 4 8 The Video Processing panel The IRD 3811 includes basic proc amp functions for the analog video output Figure 3 13 Video Output Metadata Dolby Status Figure 3 15 Video Processing panel ...

Page 27: ...ompression DRC Use the pulldown to set DRC ON or OFF DRC Profile Use the pulldown to set the DRC profile to Line mode or RF mode A V Sync Offset Use the slider or type into the data box to set the audio video sync offset to a value between 0 and 100 msec Audio Embed use the pulldown to set audio embedding ON or OFF 3 4 9 2 Status tab This tab contains text boxes and status icons that indicate the ...

Page 28: ... either of the programs The non decoded audio AC3 will be inserted into one of the output AES channels Only the AC3 element is available in this case the decoded program element pairs shown in the figure do not exist The default assignment is as shown in figure 3 18 Click the radio buttons to change the assignment A program element pair or AC3 program can be assigned to more than one AES if desire...

Page 29: ...al selects the internal reference 625 from the backplane Input uses the currently selected input signal The Used Reference box shows the reference currently in use which is helpful in Auto mode Vertical lines With this adjustment a value ranging from 0 to 200 lines compared to the reference or the processing delay may be set This adjustment can be used in conjunction with the horizontal timing adj...

Page 30: ...est 3 4 12 2 TR 101 290 tab This tab shows the results of the tests against the TR 101 290 standard Click in the checkbox at the bottom to enable or disable display updating about once per second The time out value for each of the probed values can be set by the user Double click on the current value to open the data box and enter a new value Figure 3 21 Probing panel Structure tab Figure 3 22 TR ...

Page 31: ... This representation illustrates the bandwidth distribution within the service The table below the chart shows all of the elements identifying each by name PID and bandwidth Click on a name in the table and the corresponding slice of the pie will slide out from the chart Click on a slice of the pie it will slide out and it s program name in the table will be highlighted Mouse over a slice and the ...

Page 32: ... available when DVB S2 from the tuner input is selected 3 4 13 The Test panel Use the Color Bars checkbox to turn the Test function ON or OFF When checked the output signal is replaced by Color Bars When unchecked the normal program signal is present at the output The icon at the top of the window second from the right shows the status of the color bars Figure 3 25 Probing panel PSIP tab Figure 3 ...

Page 33: ...or more information about proxy video streaming Audio Enable select the checkbox to enable audio metering you cannot turn the Audio Player ON unless this box is selected Left Src Right Src use these two pulldowns to select the audio sources for the left and right audio meters Left Right Center LFE Left Surround Right Surround Aux Left Aux Right Meter Ballistics Config tab Type pull down box this p...

Page 34: ...boxes Click in the box to see a scrollable list and select the desired level The Overload Counter shows a running count of the number of overloads detected The Phasemeter is a small meter that represents the phase correlation factor between the two channels of a pair 180 90 0 3 4 15 The Network Settings panel This panel is only available when the ETH Option has been activated Settings tab ETH Port...

Page 35: ...ed Streaming Configuration IP Address This is the unicast or multicast address for the source or destination Port Number This is the port on which the signal is present This is valid for either transmitting or receiving If this port does not correspond to the source no signal will be received Enter the new values directly into the data boxes The changed data will show in red Press Apply to apply t...

Page 36: ...sses in them cannot be greater than 59 The overall total is shown at the bottom right of the window Click SAVE to store the line or CANCEL to terminate the session without making changes To delete a line in the window click on one of its data boxes and click REMOVE 3 4 16 The Factory Presets panel This panel provides resources for saving restoring and transferring the configuration settings of thi...

Page 37: ... it to another IRD 3811 card Click on Profiles to open the Profile Copy window Copy Profile From This section shows this IRD 3811 card and identifies it by App server Densité frame and slot number card type and firmware version The Profile column has a pulldown that allows you to select which profiles you will work with and gives these choices Current User1 User2 User3 User4 User5 ALL The Select c...

Page 38: ... Transfer Status box on the right of the Copy profile from line will indicate Working against a yellow background When the reconfiguration is complete the Transfer Status box on the right of the Copy profile from line will indicate Succeeded against a green background Note There is no need to select a profile using the Profile pulldown e g current User1 etc when restoring a profile from disk becau...

Page 39: ...ust Obtain a licence key from Miranda Technologies Inc Type the licence key in the box Click on ENABLE OPTION to enable the option s features The information window beneath the key entry box indicates whether the option is activated green or not gray Up Down Cross option This option enables up conversion SD to HD down conversion HD to SD and cross conversion HD to HD functionality on the IRD 3811 ...

Page 40: ... key entry box indicates whether the option is activated green or not gray Dolby 5 1 option This option enables the Dolby 5 1 output on 6 discrete channels Note Dolby 5 1 decoding is always enabled To activate this option you must Obtain a licence key from Miranda Technologies Inc Type the licence key in the box Click on ENABLE OPTION to enable the option s features The information window beneath ...

Page 41: ...nel opens in a new window when the button is clicked and can be resized if needed The panel is organized in columns Status Name This contains an expandable tree listing all the alarms reported by this IRD 3811 card Each alarm name includes an icon that shows its current status Some alarms may be text only and the alarm status is shown in the name and not by a status icon e g The Card LED Overall a...

Page 42: ...ration of the contribution of each individual alarm to the GSM Alarm Status associated with this card GSM is a dynamic register of all iControl system alarms and is also an alarm provider for external applications The possible values for this contribution are related to the Overall alarm contribution If the Overall alarm contribution is selected as Disabled the GSM alarm contribution can be set to...

Page 43: ...t 3 4 16 the alarm configuration is copied along with all the other settings Get alarm keys Click this button to open a save dialog where you can save a file containing a list of all alarms on this card and their current values along with an Alarm Key for each The alarm keys are useful for system integration and troubleshooting The file is saved in Excel csv format OK Apply Cancel OK accepts the s...

Page 44: ...the card Label type the label that appear for this IRD 3811 when it appears in iControl applications Short Label type the short form label that iControl uses in some cases 8 characters Source ID type a descriptive name for this IRD 3811 Comments type any desired text The remaining data boxes show manufacturing information about this card Details Reports the Firmware version service version and pan...

Page 45: ...messages generated on board the card Newest messages appear at the bottom of the list Use the scroll bar to view the entire list Click the Clear Messages button to empty the message window This panel is primarily provided for diagnosis purposes Hardware and transport stream error messages are sent to this panel along with card activity status reports Reset Card Use this button to reset the card Fo...

Page 46: ...GUIDE TO INSTALLATION AND OPERATION 42 IRD 3811 When you click the button you will be presented with a dialog allowing you to confirm your decision to reset or to cancel the reset ...

Page 47: ...te is below 80Mbps To select a service within the transport stream go to the Input Menu into Service Select For iControl please refer to section 3 4 6 The name of the service will be displayed when available the name is as per ATSC VCT and is unavailable for non ATSC streams When the service name is not available the card displays the service number as per PAT Audio only services can be decoded th...

Page 48: ...sible 4 3 MPEG AV Synchronization MPEG transport streams normally contain information about the encoder clock system in order to genlock the decoder to the incoming signal and avoid buffer underrun or overflows Moreover the audio and video streams contain time stamps PTS in order to re synchronize the stream at the output Should synchronization be a problem PCR jitter bad PTS the MPEG clock recove...

Page 49: ...eeping the aspect ratio LETTER BOX Adds black curtains to the 16 9 picture for 4 3 monitors PILLAR BOX Adds black bars to the 16 9 picture to properly display 4 3 images on 16 9 monitors Some modes may not apply depending on the input signal and desired output format If the selected mode is not possible the result will be the same as if NONE was selected The AUTO mode will use the input AFD to aut...

Page 50: ...t signal 16 9 16 9 Letterbox top image in a 4 3 frame 4 3_2 16 9 Letterbox top image in a 4 3 frame 4 3_2 16 9 Full frame image in a 16 9 frame 16 9_8 14 9 Letterbox top image in a 4 3 frame 4 3_3 14 9 Letterbox top image in a 4 3 frame 4 3_3 14 9 Pillar box image in a 16 9 frame 16 9_11 16 9 Letterbox center image in a 4 3 frame 4 3_4 16 9 Letterbox center image in a 4 3 frame 4 3_4 16 9 Letterbo...

Page 51: ...9 in a 4 3 frame 4 3_14 16 9 Letterbox image shoot and protect 14 9 in a 4 3 frame 4 3_14 16 9 Image shoot and protect 14 9 in a 16 9 frame 16 9_14 16 9 Letterbox image shoot and protect 16 9 in a 4 3 frame 4 3_15 16 9 Letterbox image shoot and protect 16 9 in a 4 3 frame 4 3_15 16 9 Image shoot and protect 14 9 in a 16 9 frame 16 9_15 Input signal 4 3 Output signal 16 9 16 9 Full frame image in a...

Page 52: ...n 16 9 frame 16 9_9 16 9 Protected Full frame image in a 16 9 frame 16 9_10 16 9 Letterbox image in 4 3 frame 4 3_10 16 9 Protected Full frame image in a 16 9 frame 16 9_10 14 9 Pillar box image in a 16 9 frame 16 9_11 14 9 Letterbox image in a 4 3 frame 4 3_11 14 9 Pillar box image in a 16 9 frame 16 9_11 Input signal 4 3 Output signal 16 9 4 3 Pillar box image Shoot and protect 14 9 in a 16 9 fr...

Page 53: ...lid with CBR streams as per TR 101 290 The probing is performed only on the first 128 PIDs PCR measurements are only done on selected program Only ATSC EIT 0 to 3 are probed The Unreferenced PID list is updated every 10s Therefore a PID that is no longer present in the stream will disappear from the list after 10s PSIP probing is done on ATSC signals only 4 8 Using the video proxy streaming The IR...

Page 54: ...e DVB ASI Up to 80 Mbps Mode Burst and byte supported TS packet length 188 204 byte packets Return loss 15 dB up to 270 MHz ASI OUTPUT Quantity connector One output with BNC connector IP OUTPUT Quantity connector One Gigabit Ethernet with RJ45 connector IEEE 802 3 Standards Pro MPEG Code of Practice 3 CoP3 Stream protocols IP UDP RTP and IGMPV3 VIDEO DECODER Compatibility standard MPEG 2 compatibl...

Page 55: ...2M for HD output VIDEO AND TS METADATA CC data extraction NTSC CC1 and CC2 as per EIA 608B DTV CC EIA 608B compliant bytes of EIA 708B CC embedding CC Embedding as per SMPTE 334M Teletext WST EIA 300 706 PSIP ATSC PSIP Standard A 65 REFERENCE INPUT Reference input One input with BNC connector Signal SMPTE 170M SMPTE 318M ITU 624 4 BUT 470 6 black burst SMPTE 274M SMPTE 296M tri level synch black R...

Page 56: ...720p59 94 525 625 1080i59 94 SELECTED SERVICE NUM xxxx xxxxH Name Unknown SERVICE Name Video PID xxxxH Video MPEG2 H 264 Aud1 PID xxxxH Aud2 PID xxxxH SERVICE FORMAT Encrypted video format aspect ratio CLOSED CAPTION DTVCC DTVCC NTSC NOT PRESENT MAIN AUDIO NOT PRESENT UNSUPP type xxCH SECONDARY AUDIO NOT PRESENT UNSUPP type xxCH CARD IP ADDR xxx xxx xxx xxx ATSC PSIP STATUS for cards with ATSC tun...

Page 57: ...ULT MASK xxx xxx xxx xxx DEFAULT GATEWAY xxx xxx xxx xxx PORT DIRECTION DISABLED INPUT OUTPUT STREAM IP ADDR xxx xxx xxx xxx PORT NUMBER xxxx ENCAPSULATION RTP UDP FEC OFF D x L x VIDEO MENU OUTPUT ON ERROR Freeze Black OUTPUT FORMAT As Input 1080i 720p SD AFD MODE AUTO FORCED DEFAULT AFD CODE numbers from 8 to 15 ASP RATIO MODE NONE AUTO STRETCH CENTER CUT LETTERBOX PILLAR BOX DISP ASP RATIO 4 3 ...

Page 58: ...N TELETEXT OFF AUTO VCHIP MODE PASS REPLACE AFD VLI WSS INS OFF AFD VLI WSS AFD LINE 9 20 REFERENCE MENU SOURCE INPUT EXTERNAL URS 525 URS 625 AUTO_SEL DELAY FRAME 0 1 2 3 VERTICAL 0 200 HORIZONTAL specified in ns or us up to one complete line PROXY CONFIG PROXY SIZE SMALL MEDIUM PROXY AUDIO CTRL ON OFF PROXY AUDIO L CH LEFT RIGHT CENTER LFE SURR LEFT SURR RIGHT AUX LEFT AUX RIGHT PROXY AUDIO R CH...

Page 59: ...s the serial number of the card OPTIONS FRAME SYNC ON status ON or OFF is shown beside option name UP DN CROSS ON status ON or OFF is shown beside option name TS PROBE ON status ON or OFF is shown beside option name ETHERNET ON status ON or OFF is shown beside option name DOLBY 5 1 ON status ON or OFF is shown beside option name FACTORY DEFAULT RESTORE ANNEX 2 Dolby Metadata Profiles The chart sho...

Page 60: ...n Complete Main Complete Main Center Mix Level 3 3 3 N A Surround Mix Level 3 3 3 N A Dolby Surround Mode Off Off On N A Copyright Bit Yes Yes Yes Yes Original Bitstream Yes Yes Yes Yes Audio Production Info No No No No Mix Level 85 dB SPL 85 dB SPL 85 dB SPL 85 dB SPL Room Type Not Indicated Not Indicated Not Indicated Not Indicated Preferred Stereo Downmix Lt Rt Lt Rt Not Indicated Not Indicated...

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