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BMS INSTITUTE OF TECHNOLOGY AND MANAGEMENT
Yelahanka,Bangalore-64
DEPARTMENT OF TELECOMMUNICATION ENGINEERING
“AN OVERVIEW...
Outline
Introduction
Literature Survey
Need for HEVC
HEVC
HEVC Block Diagram
Hardware Implementation of HEVC
Software Impl...
Introduction
Video signal
Sequence of images.
Frame rate is a measure of no. of frames in one second.
Video Compression
Pr...
Need for Video Compression
Raw data is huge.
Channel capacity is limited.
It reduces bit rate.
Advantages of Video Compres...
Video Codec
• It has a coder and a decoder.
• Used for compression or decompression of video file or
streaming video data....
Literature Survey
VIDEO CODECS STANDARDIZATION HISTORY
[1] Gary J. Sullivan, Jens-Rainer Ohm, Woo-Jin Han, Thomas Wiegand ...
Literature Survey Contd….
• H.261
• H.262 / MPEG – 2
• H.263
• H.264 / MPEG – 4 AVC
• MPEG – 4
• MPEG – 1
• DivX
• Real Vi...
80%
20%
NETWORK TRAFFIC
Video Data
Need For High Efficiency Video Coding (HEVC)
/ H.265
• Digital video is driving the fut...
• It delivers crisper video contents and requires 50% bandwidth.
• It helps to stream or download an HD Video in a very le...
Comparison of HEVC with H.264
HEVC Block Diagram
1.Picture Partitioning
(32x32)
(8x8)
(16x16)
2.Transform size
3.Prediction Units
Intra
2Nx2N,NxN
Inter
2Nx2N,NxN,dNxN,NxdN
4.Intra Prediction
5.Inter Prediction
 Two main prediction modes
• Advanced Motion Vector prediction
• Merge
 7 or 8-tap interpolation filt...
6.Deblocking
• HEVC Deblocking is performed on the 8×8 grid only
• Parallelizable
7. Sample Adaptive Offset
• After Debloc...
8. Entropy Coding
CABAC (Context Adaptive Binary Arithmetic Coding) a more
sophisticated context management scheme.
• Impr...
Higher Compression ratio thereby reduces file size.
50% reduction in bit rate
High performance and good stability.
Hig...
Hardware Implementation of HEVC
FPGA IMPLEMENTATION OF HEVC DECODER BY HHI FRAUNHOFFER
Software Implementation of HEVC
HEVC REAL TIME 4K ENCODER
2160p60 10 bit real time encoding.
Look ahead processing.
Availa...
Applications
References
[1] Gary J. Sullivan, Jens-Rainer Ohm, Woo-Jin Han, Thomas Wiegand “Overview of the
High Efficiency Video Coding...
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An Overview of High Efficiency Video Codec HEVC (H.265)

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Overview of HEVC (H.265)

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An Overview of High Efficiency Video Codec HEVC (H.265)

  1. 1. BMS INSTITUTE OF TECHNOLOGY AND MANAGEMENT Yelahanka,Bangalore-64 DEPARTMENT OF TELECOMMUNICATION ENGINEERING “AN OVERVIEW OF THE HIGH EFFICIENCY VIDEO CODING (HEVC) H.265 STANDARD” Presented By VARUN R [1BY11TE052]
  2. 2. Outline Introduction Literature Survey Need for HEVC HEVC HEVC Block Diagram Hardware Implementation of HEVC Software Implementation of HEVC Applications of HEVC References
  3. 3. Introduction Video signal Sequence of images. Frame rate is a measure of no. of frames in one second. Video Compression Practical implementation of source coding. Video compression algorithms use lossy compression which reduces redundancy in video data. Compression algorithms combine spatial image compression and temporal motion compensation.
  4. 4. Need for Video Compression Raw data is huge. Channel capacity is limited. It reduces bit rate. Advantages of Video Compression Reduces disk space. File transferring is faster.
  5. 5. Video Codec • It has a coder and a decoder. • Used for compression or decompression of video file or streaming video data. • Implemented using different algorithms by different companies but complies with industry standards. • Compression technology, OS supported, sampling are the factors which differentiate between codecs.
  6. 6. Literature Survey VIDEO CODECS STANDARDIZATION HISTORY [1] Gary J. Sullivan, Jens-Rainer Ohm, Woo-Jin Han, Thomas Wiegand “Overview of the High Efficiency Video Coding (HEVC) Standard” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 22, NO. 12, DECEMBER 2012 Pg 1649,1650
  7. 7. Literature Survey Contd…. • H.261 • H.262 / MPEG – 2 • H.263 • H.264 / MPEG – 4 AVC • MPEG – 4 • MPEG – 1 • DivX • Real Video • Sorenson • x264 [1]Gary J. Sullivan, Jens-Rainer Ohm, Woo-Jin Han, Thomas Wiegand “Overview of the High Efficiency Video Coding (HEVC) Standard” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 22, NO. 12, DECEMBER 2012 Pg 1649,1650 [2] Jens-Rainer Ohm, J. Sullivan, Heiko Schwarz, Thiow Keng Tan, Thomas Wiegand “Comparison of the Coding Efficiency of Video Coding Standards—Including High Efficiency Video Coding (HEVC)” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 22, NO. 12, DECEMBER 2012 Pg 1669
  8. 8. 80% 20% NETWORK TRAFFIC Video Data Need For High Efficiency Video Coding (HEVC) / H.265 • Digital video is driving the future of Communication and Internet. • Internet traffic is dominated by video content, there is a need for technology which reduces bandwidth. • Video service providers aim at cutting down cost but ensuring good video quality.
  9. 9. • It delivers crisper video contents and requires 50% bandwidth. • It helps to stream or download an HD Video in a very less time. • It supports 4K (4096 x 2160) and 8K(8192x4320) Ultra HD (UHD) video contents • IT pioneers like Qualcomm, Broadcom, Huawei are working on products enabled with H.265 • Strong Industrial and academic interests. Up to 1000 contributions per meeting. • Backed by most of the major tech companies around the world. HEVC / H.265
  10. 10. Comparison of HEVC with H.264
  11. 11. HEVC Block Diagram
  12. 12. 1.Picture Partitioning (32x32) (8x8) (16x16)
  13. 13. 2.Transform size
  14. 14. 3.Prediction Units Intra 2Nx2N,NxN Inter 2Nx2N,NxN,dNxN,NxdN 4.Intra Prediction
  15. 15. 5.Inter Prediction  Two main prediction modes • Advanced Motion Vector prediction • Merge  7 or 8-tap interpolation filter for luma:1/4 Pel  4-tap interpolation filter for chrom:1/8 Pel
  16. 16. 6.Deblocking • HEVC Deblocking is performed on the 8×8 grid only • Parallelizable 7. Sample Adaptive Offset • After Deblocking (Optional) • Add offset to pixels depending on their categorization (band, edge) • Up to 6% bitrate savings.
  17. 17. 8. Entropy Coding CABAC (Context Adaptive Binary Arithmetic Coding) a more sophisticated context management scheme. • Improved compression efficiency • Improved throughput speed while reducing its context memory requirements 9. Parallel Processing
  18. 18. Higher Compression ratio thereby reduces file size. 50% reduction in bit rate High performance and good stability. High quality video Capable of handling 3D, 4K or 8K resolutions. Disadvantages of HEVC x265 to x264 encoding time ratio = 7:1 3.5:1 Higher CPU on playback: x265: 15% of Quad-core i7 (CPU only) x264: 6% of Quad-core i7 (Hardware GPU + CPU) Concern: Battery life on mobile devices Advantages of HEVC
  19. 19. Hardware Implementation of HEVC FPGA IMPLEMENTATION OF HEVC DECODER BY HHI FRAUNHOFFER
  20. 20. Software Implementation of HEVC HEVC REAL TIME 4K ENCODER 2160p60 10 bit real time encoding. Look ahead processing. Available as SDK for Windows, Linux, iOS HEVC REAL TIME 4K DECODER 2160p60 10 bit real time decoding. Interlaced Support Picture level parallel processing
  21. 21. Applications
  22. 22. References [1] Gary J. Sullivan, Jens-Rainer Ohm, Woo-Jin Han, Thomas Wiegand “Overview of the High Efficiency Video Coding (HEVC) Standard” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 22, NO. 12, DECEMBER 2012 [2] Jens-Rainer Ohm, J. Sullivan, Heiko Schwarz, Thiow Keng Tan, Thomas Wiegand “Comparison of the Coding Efficiency of Video Coding Standards—Including High Efficiency Video Coding (HEVC)” IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 22, NO. 12, DECEMBER 2012 [3] High Efficiency Video Coding (HEVC) Algorithms and Architectures Editors: Sze, Vivienne, Budagavi, Madhukar, Sullivan, Gary J. (Eds.) [4] Design and Implementaion of Next generation Video Coding Systems By Vivienne Sze, Madhukar Budagavi [5] http://www.hhi.fraunhofer.de/fields-of-competence/image- processing/solutions/hevc-software-and-hardware-solutions/hevc-4k-real-time- decoder.html [6] Official x265 developers site.
  23. 23. Thank You

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