MP4 demultiplexer and method of operating the same

Details MP4 demultiplexer and method of operating the same MP4 demultiplexer and method of operating the same

2007-11-27

2011-12-27

Zhou, Yong (Department: 2477)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

08085843

ABSTRACT:
Provided are an MP4 demultiplexer and a method of operating the same, enabling an MP4 file to be played in a fast-play mode input by a user, wherein the MP4 demultiplexer extracts all intra-frames (I-frames) among video frames in a sample track of an MP4 file, and the MP4 demultiplexer extracts predicted-frames (P-frames) by skipping, according to a fast-play speed input by a user, at least one P-frame in a succession of P-frames present between the I-frames.

REFERENCES:
patent: 2002/0168175 (2002-11-01), Green et al.
patent: 2003/0188182 (2003-10-01), Sato et al.

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