[Mp4-tech] H.264 - Quarter Pixel Motion Compensation

[Yu-Bin Zhu]

In Motion Compensation, quarter or half samples are actually interpolated sub-samples caused by fractional motion vectors. Based on the vectors and full-samples, the sub-samples can be calculated by using bicubic or bilinear 2-D filtering. You can find a clear description by referring to section 8.4.2 of the spec.
Regards,
Yubin
-----Original Message-----
From: Arun Pradeep [mailto:arunpradeep gmail.com]
Sent: Wednesday, February 02, 2024 10:19 PM
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] H.264 - Quarter Pixel Motion Compensation
Hi All !
        I am currently working on H.264 Software Decoder based on jm82
Reference Code.
The Implementation of Motion Compensation Routines in the jm82 Code is
very complicated .
Can any body give a clear idea regarding the Quarter Pixel Motion Compensation 
implementation in H.264 Simple Profile ?
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