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Overlay details: Global motion vectors | Overlay details: Splitting mode
The sum of absolute difference between the predicted block and the actual frame block can also be displayed. Figure 4 shows ‘BBC comp’ sequence frame 26 with the SAD overlay. Intra-coded blocks are indicated by a white box, allowing a comparison between SAD value and intra decision. The -clip n command allows adjustment of the SAD scale.
Figure 4. 'BBC comp' sequence frame 26 with SAD overlay