Skip this Video
Download Presentation
What’s New in the Video World

Loading in 2 Seconds...

play fullscreen
1 / 86

What’s New in the Video World - PowerPoint PPT Presentation

  • Uploaded on

What’s New in the Video World. 1. Agenda. 3Gb/s SDI Interface Level A & B. 4K where is it going. HEVC h.265. HDMI, HDCP overview. 3 Gig SDI Level A & Level B. 3Gb/s Standards. Defined by two SMPTE standards SMPTE 424M 3 Gb/s Signal/Data Serial Interface

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'What’s New in the Video World' - kristen-mccullough

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

3Gb/s SDI Interface Level A & B

4K where is it going

HEVC h.265

HDMI, HDCP overview

3gb s standards
3Gb/s Standards

Defined by two SMPTE standards

SMPTE 424M 3 Gb/s Signal/Data Serial Interface

Defines the transport of bit-serial data structure for 3.0Gb/s

Using a single coaxial cable interface

Supports either 10 or 12 bits data words

Mapped into two virtual interfaces

10 bit parallel data streams (Data Stream One & Data Stream Two)

SMPTE 425M 3 Gb/s Signal/Data Serial Interface – Source Image Format Mapping

Level A – Four New Mapping structures for various video formats

Level B – Supports Dual Link Mapping Structure


smpte 425m level a
SMPTE 425M – Level A
  • Direct image format mapping (Native 3 Gig)
    • R’, G’, B’, Y’, C’B, C’R, and A components are mapped into a 20 bit virtual interface
    • Two parallel 10-bit data streams – data stream 1 and data stream 2
    • Each data stream has a frequency of 1.485MHz or 1.485/1.001MHz
    • Mapping Structure 1: 1080p 50/60 4:2:2 10-bit
    • Mapping Structure 2: 1080i/p, 720p 4:4:4 10-bit
    • Mapping Structure 3: 1080i/p 4:4:4 12-bit
    • Mapping Structure 4: 1080i/p 4:2:2 12-bit
smpte 425m level b
SMPTE 425M – Level B
  • 2 x SMPTE 292M HD-SDI Interface (Dual Link Mapped into 3 Gig)
    • Two 10-bit multiplexed, HD interfaces are mapped into a 20 bit virtual interface – Data stream 1 and data stream 2.
    • Two data streams must have the same line and frame structure and be word aligned.
    • Each data stream has a frequency of 1.485MHz or 1.485/1.001MHz
    • Each data stream will have two sets of TRS words, Line Numbers, and CRC code words.
level a and level b muxed output
Level A and Level B Muxed output

Data Stream 1

Native 3 gig

Muxed Output

Data Stream 2

Level A

Data Stream 1

Dual link Mapped into 3 Gig

Muxed Output

Data Stream 2

Level B



smpte425m signal data serial interface source image format level a
SMPTE425M Signal/Data Serial Interface Source Image Format (Level A)


why 3gb s sdi and high speed data
Why 3Gb/s SDI and High Speed Data?


  • Dual Link is not 3 Gig.
  • 3 Gig implies one Coax not two
  • 3 Gig uses Half the infrastructure of Dual Link
    • Cable, Router ports, Patch bays, DA’s, ......
  • Both Dual Link and 3 Gig allow work at the highest resolution (Bit Depth and Colorspace) possible prior to rendering the product.
  • In standard HD-SDI limited to 4:2:2 YCbCr only at 10-bit
  • With Dual Link & 3Gig, users can:
    • Increase color range from 10 bits to 12 bits
    • Switch from 4:2:2 to 4:4:4 Sampling to the total chrominance Bandwidth
    • Work in the RGB domain for easier integration with Special Effects editors, and Telecine applications
  • Digital cinema cameras now being adopted for feature films, television shows, and even commercials
    • Most of which is Dual Link if not all of it
who is using it where is it going
Who is using it? Where is it going?
  • Who is using it?
  • Today mostly manufactures
    • 80% of the 3 Gig SDI equipment we have sold has gone to Manufactures
    • 10% has gone to network providers
    • 10% into Post Production
      • Post is entrenched in Dual Link still
  • Where is it going?
    • Most network providers building new infrastructure are installing 3 Gig capable Switchers, Routers, Cabling, and Patch bays
      • They may not Equip it with 3 Gig
    • Most Post work will be Level B (Dual Link mapped in to 3 gig)
pathological verses pathogenic signal

300h, 198h



200h, 110h


Pathological verses Pathogenic signal

Level A

Level B


300h, 198h



200h, 110h



198h, 198h 300h, 300h



110h, 110h200h, 200h


Level B Pathological

Level A Pathological Level B Pathogenic

sdi checkfield test pattern for 3g sdi
SDI Checkfield Test Pattern for 3G-SDI

Or, “why are the colors wrong?”

In order to produce the same pathological patterns in the serial bit stream, the 10 bit words must be sequenced in the same order

This results in different colors from the familiar magenta/gray for various 3G mapping structures

Data stream 1 carries the Y samples and data stream 2 carries the Cb/Cr samples, so the multiplexing is similar to HD-SDI and the pattern has the familiar colors.

In dual link, lines alternate between the two links. Therefore, in Level B, odd lines have one word for both Y and Cb/Cr samples, and even lines have the other word for both Y and Cb/Cr samples.

Level A MS1 (1080p)

Level B 1080p

sdi checkfield test pattern for 3g sdi1
SDI Checkfield Test Pattern for 3G-SDI
  • As it appears for other Level B formats:
  • Verify with data mode (not video mode) of data display

4:4:4 YCbCr 10-bit

4:4:4 GBR 12-bit

4:2:2:4 YCbCrA 12-bit

hd eye measurement
HD Eye Measurement


Auto Measure







4K Video


The Bigger Picture

motivation for the 4k digital conversion
Motivation for the 4K Digital Conversion
  • 35 mm Film Process:
  • 35mm film can distribution
    • Expensive ($1,200 per screen)
    • Slow
    • Inflexible
    • Manual process for assembling shows
  • Studios spend $2 - $3 billion per year on release prints
  • 4K emulates the resolution of 35mm Film
  • 2K emulates the resolution of 16mm Film
  • Film prints get scratched and dirty after only a few plays, 4K D Cinema keep a pristine image at all times.
why high 4k formats market drivers
Why high 4K formats?Market Drivers
  • Cost effective technology enables theatres to provide the best quality to end consumers
  • Movie companies seek to attract high-end viewers through a rich visual experience
    • Larger picture formats
    • Diverse color spaces for improved color fidelity
    • Increased bit resolution
    • Higher refresh rates
  • High bit rate provides more flexibility to Production and Post-Production companies
    • Work at the highest resolution prior to rendering the product.
    • Optimize use of facilities using joint transmission
    • Use of new tools (such as alpha channel)
    • Emulate traditional film quality using digital technology
4k x 2k resolutions
4K x 2K Resolutions
  • Resolution on par with state-of-the-art Digital Cinema projectors used in the local multiplexes will it be coming to your living rooms? 4K resolution supports 3840x2160 and 4096x2160.
ultra hd aimed at consumer television
Ultra HD- Aimed at Consumer Television


4K - 3840 × 2160 16:9 8.3M Pixels

Has twice the resolution of the 1080p with four times as many pixels

8K- 7680 × 4320 16:9 33.2M Pixels.

examples of 4k cameras
Examples of 4K Cameras


Astrodesign AH-4413 – 2012 3840 × 2160 (8.3 megapixels)

RED ONE – 2007 4096 × 2304 (9.4 megapixels)

RED EPIC – 2011 DCI 4K (4096 × 2160, 8.8 megapixels)

RED Scarlet-X – 2011 XXXXX

JVC GY-HMQ10 – 2012 UHD 4K (3840 × 2160, 8.3 megapixels)

Sony CineAlta F65 – 2012 and records at DCI 4K

Canon EOS C500 – 2012 and records in DCI 4K

Canon EOS-1D C DSLR –2012 and records at DCI 4K

GoPro HERO3 Black – 2012 DCI 4K (limited to 15 fps)

quad sdi approach
Quad SDI approach
  • In SDI we break the screen into 4 quadrants using 3gig per Quadrant
smpte 435 1 sampling
SMPTE 435-1 Sampling
  • 4 way division square 30 fps
  • 4 way Interleave at 30 fps
xyz and 2020 color space
XYZ and 2020 Color Space
  • To emulate rich film-based cinema colors, the XYZ color space allows for richer colors on digital cinema applications.
  • Rec. 2020 color space covers 75.8%, of CIE 1931 Rec. 709 covers 35.9%

XYZ color space

steve holmes sr video applications engineer steven r holmes@tek com
HEVC H.265 Compression

Contrast and compare MPEG2, and AVC (h.264) to HEVC (h.265)

New tools and compression techniques in HEVC

Steve Holmes

Sr. Video Applications Engineer

[email protected]

compression basics
Compression Basics
  • Goal of compression: Optimize coding efficiency
  • The goal of compression is to remove or reduce redundant information from the given source
  • Intra(spatial) coding and Inter (Temporal) coding
  • Compression allows better quality picture same bandwidth
  • Different coding tools defined by the standard
scope of standard
Scope of Standard
  • Specifying the format of the data to be produced by a conforming encoder
  • Decoder processes the “compliant bit stream” to original source
  • Standard defines bit-stream structure and constraints
  • Gives freedom for encoder implementations for efficient and complex designs
hevc overview
HEVC: Overview
  • HEVC: High Efficiency Video Codec
  • Joint standard of ISO-IEC/MPEG and ITU-T/VCEG
  • ITU- H.265 and ISO- MPEG H Part 2
  • Successor of H.264/MPEG AVC
  • 10x More Complex Encoding 3x Decode Algorithm
  • Improved compression relative to existing standards
    • 50% bit rate reductions compared to H.264
    • 75% bit rate reductions compared to MPEG-2
  • Targets the existing applications of H.264 and focus on
    • Increased video resolution
    • Increased use of parallel processing architectures
hevc applications
HEVC : Applications
  • More channels over satellite, cable and IPTV
  • Lowered cost of video storage and distribution
  • Bandwidth-constrained mobile and IPTV operator
  • Improved QOE of OTT services to match traditional broadcast delivery
why does compression work
Why does Compression work
  • Video is a sequence of still pictures
    • 30 frames per second, maybe 60 frames per second
    • pixel by pixel, line by line, continuously “drawn”
  • Temporal redundancy: Very little change between consecutive pictures
  • Spatial redundancy: Very little change between adjacent pixels (luma, chroma)
  • Exploit limitations in the human visual system
    • limited luma, highly limited chroma response
    • reduced sensitivity to noise at object edges and high luma areas
    • “Psycho-visually” objective is zero loss
hevc profiles levels and tiers
HEVC Profiles Levels, and Tiers
  • Profile:defines collection of coding tools
    • Main : 8-bit video in YUV4:2:0 format
    • Main 10 : Same as Main with up to 10-bit
    • Main Still Picture: same as Main,
    • one picture only
    • Level: constrains decoder processing load and memory requirements like: max sample rate, picture size, bit rate, DPB (decode picture buffer) and CPB (coded picture buffer) size,..
  • Tier: New Concept for buffering and bitrate capability
  • “Main” tier for most applications
  • “High” tier for use in the most demanding applications
coding tree units ctu
Coding Tree Units (CTU)
  • HEVC divides the picture into CTUs
  • 64x64, 32x32 or 16x16
  • A Unit in HEVC is a Coding Logic
coding tree unit ctu
Coding Tree Unit (CTU)
  • HEVC Picture is partitioned into square coding tree blocks (CTBs).
  • Analogous to AVC Macroblock (16x16)


CU Hdr

CU Data

CU Hdr

CU Data

* * * *

coding tree blocks ctb
Coding Tree Blocks (CTB)
  • Coding Tree Unit is a Logical Unit with Three Blocks
  • One Luma (Y) Block
  • Two Chroma Blocks (Cb and Cr)
  • CTB 64x64, 32x32, 16x16 same size as CTU
coding tree blocks ctb1
Coding Tree Blocks (CTB)
  • Where H.264 used macroblocks with a maximum size of 16x16, HEVC uses coding tree blocks, or CTBs, with a maximum size of 64x64 pixels. Larger block sizes are more efficient when encoding larger frame sizes, like 4K resolution.
coding blocks cb
Coding Blocks (CB)
  • Coding Tree Blocks split in to Coding Blocks
  • CB is Decision Point for Intra or Inter Prediction
  • From 64x64 down to 8x8
prediction blocks pb
Prediction Blocks (PB)
  • Coding Block too big for Motion Vectors
  • Each Coding Block Split in Prediction Blocks
  • Temporal and/or Spatial Predictability
  • The decision of prediction is made at Coding Unit level
  • Intra picture prediction has 35 modes as compared to 9 modes in AVC
transform block tb
Transform Block (TB)
  • Each Coding Block split into Transform Blocks (TB)
  • The TB does not have to be aligned with Prediction Block
  • DCT applied- Spatial to Frequency Domain
  • Flat to High Frequency Vertical and Horizontal
random access point rap
Random Access Point (RAP)
  • AVC bit-stream would always start with Instantaneous Decoder Refresh (IDR) access unit: Closed GOP
  • HEVC supports Random Access Points.
  • Decoders can start decoding from Random Access Points
  • Supports “Open GOP” structure
  • This feature enables channel switching, seek operations and dynamic streaming
in loop filters
In Loop Filters
  • Sample Adaptive Offset (SAO) Filter
    • Similar to AVC Deblocking
    • Band and Edge Offsets Decoder Signaling
    • Not Limited to Block Boundaries
interlaced video
Interlaced Video
  • Interlaced Legacy Transcoding
  • Interlaced Tools MBAFF and PAFF, are Not Supported in HEVC.
    • Picture Adaptive Frame/Field (PAFF) - In field based coding, the top field and bottom field in the interlaced frame are coded as a separated picture
    • Macroblock Adaptive Frame/Field (MBAFF) - frame picture partitioned into 32x16 macroblock pairs, and both macroblocks in each macroblock-pair are coded in frame mode or field mode
  • Meta-stream Sent Telling How the Interlaced Video was Sent.
  • Sent Either by Coding Each Field as a Separate Picture or Coding Each Frame as a Separate Picture
  • Interlaced Video Sent Without Needing Special Interlaced Decoding Processes to be Added to HEVC Decoders.
hevc parallel processing slices
HEVC Parallel Processing: Slices
  • Independently decodable packets
  • Sequence of CTUs in raster scan
  • Error resilience
  • Slice Overlay available
hevc parallel processing tiles
HEVC Parallel Processing: Tiles

Parallel Tiles with Slices

  • Independently decodable rectangle partitions in a picture
  • Rectangular region of CTUs
  • enable random access to specific regions of a picture
  • 1 slice = more tiles, or 1 tile = more slices
  • Tile Overlay available
No In-Loop filter

Deblocking and SAO filter

hevc analyzer
NEWHEVC Analyzer
  • HEVC decode and compliance analysis
  • Syntax Checking
  • Fidelity Analysis
  • CU, TU and PU overlays
  • CTU boundaries and Tooltips
  • Slice Boundary overlay
why hdmi
  • HDMI
    • Develop to reduce the number of cables between the set top box and the display.
    • Makes it easier for the average person to hookup their devices.
hdmi what is it
HDMI what is it
  • HDMI (High-Definition Multimedia Interface)
    • is a compact audio/video interface for transferring uncompressed digital audio/video data from an HDMI-compliant device ("the source device") to a compatible digital audio device, computer monitor, video projector, or digital television. HDMI is a digital replacement for existing analog video standards.
    • can be used for any uncompressed video format, including standard, enhanced, high definition, and 3D video signals; with up to 8 channels of compressed or uncompressed digital audio
    • HDMI can use HDCP (High-bandwidth Digital Content Protection) to encrypt the signal if required by the source device. CSS, CPRM and AACS require the use of HDCP on HDMI when playing back encrypted DVD Video, DVD Audio, HD DVD and Blu-ray Disc
hdcp what is it
HDCP what is it?
  • HDCP (High-bandwidth Digital Content Protection)
    • HDMI can use HDCP to encrypt the signal, if it is required by the source device.
  • Content Scramble System, (CSS), is a Digital Rights Management, (DRM), and encryption system employed on commercially produced DVD-Video discs. Utilizes a proprietary 40-bit stream cipher. Introduced around 1996.
  • Content Protection for Recordable Media and Pre-Recorded Media, (CPRM/CPPM), mechanism for controlling the copying, moving and deletion of digital media on a personal computer or other digital player. A form of Digital Restrictions Management, (DRM), developed by the 4C Entity, LLC (consisting of IBM, Intel, Matsushita and Toshiba).
  • The Advanced Access Content System, (AACS), intended to restrict access to and copying of the post DVD generation of optical discs. Released April 2005 and adopted as the access restriction scheme for HD DVD and Blu-ray Disc . Developed by a consortium that includes Disney, Intel, Microsoft, Panasonic, Warner Bros., IBM, Toshiba and Sony.
hdmi connectors
HDMI Connectors
  • There are 5 types of HDMI Connectors.
  • Type A, B, C, D, E
  • Type A Standard HDMI Connector
  • Type B has a 2 TMDS links. (Dual Link HDMI) for Super High Resolutions
  • Type C is a smaller Version of Type A
  • Type D is a Micro Version of Type A
  • Type E is for Automotive applications

Type E


hdmi video channels and signals
HDMI Video Channels and Signals
  • TMDS - Transition Minimized Differential Signaling
    • During the Video Data Period, the pixels of an active video line are transmitted during the horizontal and vertical blanking intervals, audio and auxiliary data are transmitted within a series of packets. The Control Period occurs between Video and Data Island periods.[
  • DDC - The Display Data Channel
    • a communication channel used by the HDMI source device to read the E-EDID data from the HDMI sync device to learn what audio/video formats it supports. The standard mode speed (100 kbit/s) and allows optional support for fast mode speed (400 kbit/s) used for HD Content Protection.
  • Utility Line
    • Is used for Ethernet and return Audio
  • HPD - Hot Plug Detect
  • CEC - Consumer Electronics Control
    • command and control up-to ten CEC-enabled devices
hdmi versions 1 0 1 2a
HDMI Versions 1.0 – 1.2a
  • HDMI 1.0 was released on December 9, 2002
    • A single cable digital Audio/Video interface with a TMDS bandwidth of 4.95 Gbit/S allowing 3.96 Gbit/S of video bandwidth, (1080p/60 UXGA) and 8 channel s of LPCM/ 192 kHz/24 bit Audio.
  • HDMI 1.1 was released on May 20, 2004
    • Added support for DVD Audio.
  • HDMI 1.2 was released on August 8, 2005
    • Added up to 8 channels of one bit audio and the Type A connector for computer sources.
  • HDMI 1.2a was released on December 14, 2005
    • Fully specifies Consumer Electronics Control.
hdmi versions 1 3 1 3c
HDMI Versions 1.3 – 1.3C
  • HDMI 1.3 was released June 22, 2006
    • Increased the single-link bandwidth to 340 MHz, (10.2 Gbit/S), increased deep color from 24 bit to 30 bit, 36 bit, 48 bit. Added Dolby TrueHD & DTS-HD audio and Audio/Video Sync. Defined category 1 & 2 cables and test procedures. Added type C connector.
  • HDMI 1.3a was released on November 10, 2006
  • HDMI 1.3b was released on March 26, 2007
  • HDMI 1.3b1 was released on November 9, 2007
  • HDMI 1.3c was released on August 25, 2008
  • Each adding or changing specific items and some housekeeping.
hdmi 1 4 1 4a
HDMI 1.4 – 1.4a
  • HDMI 1.4
    • HDMI 1.4 cable has a new data channel that 1.3 and earlier did not have, for a Reverse Ethernet Channel and return audio.
    • HDMI 1.4 required that 3D displays support the frame packing 3D format at either 720p50 and 1080p24 or 720p60 and 1080p24
    • Increase in the maximum resolution to 4K × 2K
  • HDMI 1.4a
    • The big change from 1.4 was that 1.4a added side-by-side horizontal at either 1080i50 or 1080i60 and top-and-bottom at either 720p50 and 1080p24 or 720p60 and 1080p24.
  • Change in the cable from 1.3 to 1.4, No change in the cable between 1.4 and 1.4a
hdmi 1 4 ethernet channel
HDMI 1.4 Ethernet Channel
  • Change from 1.3 to 1.4
  • Some STB may check to see if Pin 14 is used, to know that the TV supports Side-by-Side 3D
    • Needs 1.4 HDMI cable
    • (HEC –data)
hdmi 1 4 4k x 2k support
HDMI 1.4 4K x 2K Support
  • Resolution on par with state-of-the-art Digital Cinema projectors used in the local multiplexes will be coming to your living rooms. 4K x 2K which represents resolutions of 3840x2160 and 4096x2160 will both be supported by HDMI 1.4 at 30Hz or below

The Next Generation of 3D Video Solutions

hdmi new v2 0
HDMI – New V2.0
  • [email protected]/60, (2160p), which is 4 times the clarity of 1080p/60 video resolution
  • Up to 32 audio channels for a multi-dimensional immersive audio experience
  • Up to 1536kHz audio sample frequency for the highest audio fidelity
  • Simultaneous delivery of dual video streams to multiple users on the same screen
  • Simultaneous delivery of multi-stream audio to multiple users (up to 4)
  • Support for the wide angle theatrical 21:9 video aspect ratio
  • Dynamic synchronization of video and audio streams
hdmi signals
HDMI signals
  • Transition-minimized differential signaling (TMDS) is a technology for transmitting high-speed serial data and is used by the DVI and HDMI video interfaces, as well as other digital communication interfaces.
  • The transmitter incorporates an advanced coding algorithm which reduces electromagnetic interference over copper cables and enables robust clockrecovery at the receiver to achieve high skew tolerance for driving longer cables as well as shorter low cost cables.
  • HDMI carries video, audio and auxiliary data via one of three modes, called the Video Data Period, the Data Island Period and the Control Period
  • During the Video Data Period, the pixels of an active video line are transmitted.During the Data Island period (which occurs during the horizontal and vertical blanking intervals), audio and auxiliary data are transmitted within a series of packets. The Control Period occurs between Video and Data Island periods.
  • This format is very Similar to SDI SAV-Video-EAV-Anc data
tmds channels
TMDS channels
  • The Video carried across the link will be in one of 3 formats.
  • RGB 4:4:4
  • YCbCr4:4:4
  • YCbCr4:2:2
  • 8 Bit color is mandatory
  • 10, 12, or 16 Bit color is optional. (Deep Color) if Deep Color is supported 12 Bit is minatory. (1.3)
video data encoding
Video Data Encoding
  • Each 8 bits of video data is coded to 10 bits, using a type of 8b 10b coding.
  • Each 10 Bit output is either XOR or XNOR to produce the fewest transitions. With LSb of output matching LSb of input.
  • This output then may be inverted to produce the best DC balance of the transmitted stream.
  • On Sources and Sinks any analog format that is supported will be supported in HDMI, frame rate and color space.
  • All HDMI Sources and Sinks shall support RGB 4:4:4
  • All Sources shall support either YCbCr4:4:4 or YCbCr4:2:2.
  • All Sinks shall support both YCbCr4:4:4 and YCbCr4:2:2
video data encoding1
Video Data Encoding

Transmit Video data in

Video data out

8B to 10B

10B to 8B







Video data out

Receive Video data in

aux data information
Aux Data Information
  • Source Prod Desc: - indicates the Source Product Description that is the name of the manufacturer of the device, if present.
  • Aspect Ratio: - indicates the aspect ratio of the image.
  • ACP Packet: - indicates presence of Audio Content Protection Packet .
  • ISRC Packet: - indicates presence of International Standard Recording Codes
  • Gamut Packet: - indicates presence of .
  • Vendor Specific Info: - indicates the presence of Vendor Specific Information.
  • AVI Info: - indicates presence of AVI Info frame.
  • Source Prod Desc Info: - indicates the presence of Source Product Description Information .
  • Audio Info: - indicates presence of Audio Information.
  • MPEG Source Info: - indicates presence of MPEG Source Information.

Sent during Data Island periods

closed captions
Closed Captions
  • In NTSC 608 captions are carried on Line 21 of the actual Video
  • In HD SDI 708 captions are carried as a Data packet in the Vertical Ancillary space (608 are carried inside of the 708 packet)
  • In MPEG 608 are on a Visible Picture line so it is coded with the Video
  • In MPEG 708 Captions are carried as user data in the header of each Picture start code
  • HDMI knows nothing about Captions!! It is STB or DVD/BluRay player that will overlay the captions on the video
content protection hdcp
Content protection (HDCP)
  • There are three main parts to HDCP’s security system.
  • AKE
    • First, there is the cryptographic Authentication and Key Exchange (AKE). When a company wishes to produce an HDCP-compliant device, that company requests a set of keys from the HDCP licensing body.
    • After the licensing body has determined that the company’s product has been designed in a manner robust enough to withstand attacks and that the keys will be protected, the company will be given a series of unique secret keys.
  • Hand Shake
    • Once both the playback device and the display device have settled on a value with which to encrypt the content, all the video content will be encrypted using this mutual value (this is the second part).  Additionally, the system will check every couple of seconds to ensure the integrity of both the keys and the link.
  • Key-revocation list
    • The third aspect of HDCP security is device renewability. This is the ability for media, streaming content, or even other devices to invalidate keys known to be a problem.
non hdcp receivers
Non HDCP receivers
  • What happens when a Non HDCP receiver is hooked to a HDCP transmitter.
    • The transmitter tries to handshake the receiver does not respond and the transmitter shuts off in about 3 to 5 seconds.
      • We have not even started the content yet to see if it is protected or not.
  • HDCP does not turn on and off. If a device is HDCP compliant the HDCP signaling is always on, even for not protected content.
how to see the output of a hdmi device
How to see the Output of a HDMI device
  • You need an HDCP compliant device..

Set Top Box

HDCP compliant Waveform Monitor

Cell Phone or Tablet

pre introduction technology demonstration new set top box monitoring wfm wvr5250
Pre-introduction Technology DemonstrationNewSet Top Box Monitoring – WFM/WVR5250
  • HDMI (with HDCP) Content Monitor
    • Audio Loudness Monitoring for the CALM “Quick Check”
    • Black / Frozen Video Detection and valid color gamut
    • Advanced Error Logging with Web Server UI Full Control
  • Replace your Slingbox!

2x SDI Switched Inputs


  • HDMI A/B Switched Input
  • HDMI Out
video session screens
Video Session Screens
  • Input Signaled format
  • Measured Format
  • Input & Output HDCP status
when things are not correct
When things are not correct…
  • Input format was signaled as 1080P
  • But received data was 601 color space

Color is washed out

when things are not correct1
When things are not correct…
  • Black levels lifted almost 50mV
when things are not correct2
When things are not correct…
  • Color Bars not quite correct look at Red and Magenta
  • Other colors are off also
audio monitoring
Audio Monitoring


Calm Spot Check Post - STB

audio monitoring1
Audio Monitoring