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vp8_bitstream
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更新于2023-06-22
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描述了最新flash video的视频格式vp8,可以参考这个标准设计出vp8的解码器
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Chapter 1: Introduction
Chapter 2: Format Overview
Chapter 3: Compressed Frame Types
Chapter 4: Overview of Compressed Data Format
Chapter 5: Overview of the Decoding Process
Chapter 6: Description of Algorithms
Chapter 7: Boolean Entropy Decoder
7.1 Underlying Theory of Coding
7.2 Practical Algorithm Description
7.3 Actual Implementation
Chapter 8: Compressed Data Components
8.1 Tree Coding Implementation
8.2 Tree Coding Example
Chapter 9: Frame Header
9.1 Uncompressed Data Chunk
9.2 Color Space and Pixel Type (Key Frames-only)
9.3 Segment-based Adjustments
9.4 Loop Filter Type and Levels
9.5 Token Partition and Partition Data Offsets
9.6 Dequantization Indices
9.7 Refresh Golden Frame and AltRef Frame
9.8 Refresh Last Frame Buffer
9.9 DCT Coefficient Probability Update
9.10 Remaining Frame Header Data (non-Key Frame)
9.11 Remaining Frame Header Data (Key Frame)
Chapter 10: Segment-based Feature Adjustments
Chapter 11: Key Frame Macroblock Prediction Records
11.1 mb_skip_coeff
11.2 Luma Modes
11.3 Subblock Mode Contexts
11.4 Chroma Modes
11.5 Subblock Mode Probability Table
Chapter 12: Intraframe Prediction
12.1 mb_skip_coeff
12.2 Chroma Prediction
12.3 Luma Prediction
Chapter 13: DCT Coefficient Decoding
13.1 MB Without non-Zero Coefficient Values
13.2 Coding of Individual Coefficient Values
13.3 Token Probabilities
VP8 Data Format and Decoding Specification Table of Contents
ii
13.4 Token Probability Updates
13.5 Default Token Probability Table
Chapter 14: DCT and WHT Inversion and Macroblock Reconstruction
14.1 Dequantization
14.2 Inverse Transforms
14.3 Implementation of the WHT Inversion
14.4 Implementation of the DCT Inversion
14.5 Summation of Predictor and Residue
Chapter 15: Loop Filter
15.1 Filter Geometry and Overall Procedure
15.2 Simple Filter
15.3 Normal Filter
15.4 Calculation of Control Parameters
Chapter 16: Interframe Macroblock Prediction Records
16.1 Intra-Predicted Macroblocks
16.2 Inter-Predicted Macroblocks
16.3 Mode and Motion Vector Contexts
16.4 Split Prediction
Chapter 17: Motion Vector Decoding
17.1 Coding of Each Component
17.2 Probability Updates
Chapter 18: Interframe Prediction
18.1 Bounds on and Adjustment of Motion Vectors
18.2 Prediction Subblocks
18.3 Sub-pixel Interpolation
18.4 Filter Properties
Chapter 19: References
Revision History
VP8 Data Format and Decoding Specification Table of Contents
iii
License
Google hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and
otherwise implementations of this specification where such license applies only to those patent claims, both
currently owned by Google and acquired in the future, licensable by Google that are necessarily infringed by
implementation of this specification. If You or your agent or exclusive licensee institute or order or agree to
the institution of patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit)
alleging that any implementation of this specification constitutes direct or contributory patent infringement, or
inducement of patent infringement, then any rights granted to You under the License for this specification
shall terminate as of the date such litigation is filed.
VP8 Data Format and Decoding Specification License
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