[Mp4-tech] AVC: restriction of MC in using multiple slices

[Xi-ao]

Hello, experts,
  Is any restriction of motion compensation when using multiple slices to code a frame? I understand the slice is a self-contained unit that can be decoded independantly. However, is it required that its reference pic. to be in a self-contained slice also?
  For example, if I-frame is split into 10 slices, and the following P-frame is split into 2 slices, is it allowed that MBs in P-slices use the compensated data from different I-slices freely? 
  Thanks in advance.
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