Patent ID: 8295358

Claim:
An apparatus, comprising: means for receiving a video frame of a video stream; means for subdividing the video frame into blocks of a first block size; means for subdividing the video frame into blocks of a second block size; means for comparing the blocks of the first block size and the blocks of the second block size to corresponding blocks of a decoded version of a preceding video frame to determine whether any of the blocks of the first block size or the blocks of the second block size have not changed more than a minimum amount as compared to the corresponding blocks of the decoded version of the preceding video frame; means for discarding the blocks of the first block size and the blocks of the second block size that have not changed more than the minimum amount; means for determining that either the blocks of the first block size or the blocks of the second block size correspond to a compression block size that is capable of producing a smaller encoded video frame; and means for encoding the video frame of the video stream using the compression block size.