21. Types of predicted picture
I : Intra prediction only
P : Inter prediction (one reference frame) or Intra prediction
B : Biprediction (two reference frames), Inter (one reference) or Intra prediction
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45. H.264/AVC
• First released in 2003
• Published by ISO MPEG and ITU-T VCEG
• Roughly 2x compression efficiency of MPEG-2
• Used for:
– Blu-Ray Disks
– High Definition TV broadcasting
– Internet video
– ……
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52. Types of video compression patent
• Encoder
• Decoder
• Transport
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53. Patent Pools
• E.g. MPEG-LA, H.264/AVC patent pool:
– Licenses patents on behalf of patent holders
– Unrelated to ISO/IEC MPEG
– Accepts patents based on determination of “essentiality”
– 250+ US patents
– 900+ licensees
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54. Agenda
• 1. What is Video Compression?
• 2. How does a video codec work?
– - prediction
– - transform + quantization
– - coding
– - examples
• 3. Video compression standards
– - H.264
– - HEVC
• 4. Video compression patents
• 5. Going further
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55. To find out more
• http://www.itu.int - Download the H.264 standard
• http://www.vcodex.com - Free tutorials
• Follow me on Twitter: @onecodec
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