chromium / webm / bitstream-guide / 220cf740325e8115c8d8c72000f3498ad7816520 / . / text_src / 09.09__vp8-bitstream__dct-coefficient-probability-update.txt

#### 9.9 DCT Coefficient Probability Update {#h-09-09} | |

This field contains updates to the probability tables used to decode | |

DCT coefficients. For each of the probabilities in the tables, there | |

is an `L(1)` flag indicating if the probability is updated for the | |

current frame, and if the `L(1)` flag is set to `1`, there follows an | |

additional 8-bit value representing the new probability value. These | |

tables are maintained across interframes but are of course replaced | |

with their defaults at the beginning of every key frame. | |

The layout and semantics of this field will be taken up in | |

Section 13. | |