A sequence of encoded data associated with a block of video is assessed to determine if: quantized coefficients of transformed residual pixel data associated with the block are equal to zero, the block was encoded using a temporal compression process, a slice that includes the block is configured to be encoded using only one reference picture list or two reference picture lists, the block is unpartitioned or was encoded in direct mode, a reference picture used to encode the block is the reference picture associated with a lowest index value on the one reference picture list, and an actual motion vector associated with the block is equal to a predicted motion vector associated with the block.