MPEG-4 SP与H.264 Baseline间的比较

eejay

Coding Features
MPEG-4 Simple Profile
H.264 Baseline Profile
Entropy Coding
VLC
CAVLC
ME Accuracy
1/2 pixel
1/4 pixel
Block Transform
8x8 DCT
4x4 Integer DCT
Multiple Reference Frames
Not supported
Supported(max 16 frames)
Frame Distance for Prediction
+/- 1
Not limited
MotionEstimationblock size
8x8,16x16,16x8(interlace)
16x16,16x8,8x16,8x8;8x8,8x4,4x8
Intra block prediction
AC/DC prediction
9 modes for 4x4,4 modes for 16x16,4 modes for chrominance 8x8
Rate-Distortion Optimization
No
Yes
Deblock Filter
No normative filter,post filter
Yes, 4x4 block boundary, in loop


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