[Codec] HEVC Study

• Resource
• Documents
• Standard
• ITU H.265 Standard
• Software
• Reference Software: HM
• Encoder: x265
• Viewer/Analyzer
• Intel Video Pro Analyzer
• YUVview
• Video Tool
• GPAC
• ffmpeg
• Reference test stream
• conformance bitstream
• Content
• Profile, Levels, Tiers (introduced in H265)
• Profile
• Main Profile < Main Still Picture Profile < Main 10 Profile
• Main 10 Profile
• 10 bits/sample for HDR, High color gamut, etc.
• Levels
• defines resolution, frame rate, bit rate, buffer capacity (e.g. dpb - decoded picture buffer), ...etc.

• Level	Resolution
  4	HD
  5	4K
  6	8K

• tier
• Main tier/High tier to distinguish the bit rates
• Syntax
• Patent fee

[Codec] Video Codec container format

• reference: http://l.web.umkc.edu/lizhu/teaching/2016sp.video-communication/ref/mp4.pdf
• box: object orientied
• Boxes start with a header which gives both size and type (16/32 bits)
• syntax description language (SDL)
• extract ES
• YAMB
• FFMPEG

• ffmpeg -i input.mp4 -vcodec copy -vbsf h264_mp4toannexb output.h264

• Tools
• MP4Box
• mp4box -raw input.mp4
• tutorial
• MediaInfo
• Intel Video Analyzer
• Reference
• H.264流媒体协议格式中的Annex B格式和AVCC格式深度解析
• 網路抽象層
• Elementary Stream
• ISO-BMFF standard
• MSE segment formats: https://www.w3.org/TR/mse-byte-stream-format-isobmff/
• Awesome broadcasting
• ISO BMFF wiki

[Codec] Video Codec 參考書目

覺得不錯的參考書目:

• H.264 and MPEG-4 Video Compression
• 雖然年代有點久, 但內容滿適合入門以及了解相關知識，包含簡述codec 發展歷史、codec 觀念 (Chapter Video Coding Concept - 包含 block diagram, e.g. DPCM/DCT video encoder/decoder架構)及 standard相關細節 (e.g. Chapter H.264/MPEG4 Part 10)
• Video Demystified
• 比較偏向訊號面來講解, e.g. 數位訊號(e.g. PAL, color space)、廣播制式(e.g. DVBC/ATSC)
• Next Generation Video Coding and Streaming
• 以 HEVC為主, 滿 spec. 導向, 另外在 container(e.g. mp4, ts), 以及 streaming 著墨較多

以上是目前覺得不錯的書目, 由於工作需要, 所以開始 K相關技術, 若有相關技術可以分享交流, 甚至一起來個讀書會. 都非常歡迎 feedback哦