H.264 Prediction: Difference between revisions
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m (→Horizontal: revised convention) |
m (→DC: revised convention) |
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| Line 35: | Line 35: | ||
* RV40: mode 2 | * RV40: mode 2 | ||
D | T0 T1 T2 T3 | |||
---------------- | --------------------- | ||
L0 | Z Z Z Z | |||
L1 | Z Z Z Z | |||
L2 | Z Z Z Z | |||
L3 | Z Z Z Z | |||
where Z is computed as: | where Z is computed as: | ||
Z = ( | Z = (T0 + T1 + T2 + T3 + L0 + L1 + L2 + L3 + 4) / 8 | ||
=== Diagonal Down/Left === | === Diagonal Down/Left === | ||
Revision as of 16:39, 29 July 2007
This page documents the various prediction methods used in H.264 and related formats such as Sorenson Video 3 and RealVideo 4.
4x4 Prediction Modes
Vertical
- H.264: mode 0
- SVQ3: mode 0
- RV40: mode 0
D | T0 T1 T2 T3 --------------------- L0 | T0 T1 T2 T3 L1 | T0 T1 T2 T3 L2 | T0 T1 T2 T3 L3 | T0 T1 T2 T3
Horizontal
- H.264: mode 1
- SVQ3: mode 1
- RV40: mode 1
D | T0 T1 T2 T3 --------------------- L0 | L0 L0 L0 L0 L1 | L1 L1 L1 L1 L2 | L2 L2 L2 L2 L3 | L3 L3 L3 L3
DC
- H.264: mode 2
- SVQ3: mode 2
- RV40: mode 2
D | T0 T1 T2 T3 --------------------- L0 | Z Z Z Z L1 | Z Z Z Z L2 | Z Z Z Z L3 | Z Z Z Z
where Z is computed as:
Z = (T0 + T1 + T2 + T3 + L0 + L1 + L2 + L3 + 4) / 8