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【文件名】:06720@52RD_MPEG-4 encoder for mobile phone.rar
【格 式】:rar
【大 小】:315K
【简 介】:Work on the emerging “Advanced Video Coding” standard now known as ITU-T Recommendation
H.264 and as ISO/IEC 14496 (MPEG-4) Part 10 has dominated the video coding
standardization community for roughly the past three years. The work has been stimulating,
intense, dynamic, and all consuming for those of us most deeply involved in its design. The
time has arrived to see what has been accomplished.
Although not a direct participant, Dr Richardson was able to develop a high-quality,
up-to-date, introductory description and analysis of the new standard. The timeliness of this
book is remarkable, as the standard itself has only just been completed.
The new H.264/AVC standard is designed to provide a technical solution appropriate
for a broad range of applications, including:
Broadcast over cable, satellite, cable modem, DSL, terrestrial.
Interactive or serial storage on optical and magnetic storage devices, DVD, etc.
Conversational services over ISDN, Ethernet, LAN, DSL, wireless and mobile networks,
modems.
Video-on-demand or multimedia streaming services over cable modem, DSL, ISDN, LAN,
wireless networks.
Multimedia messaging services over DSL, ISDN.
The range of bit rates and picture sizes supported by H.264/AVC is correspondingly broad,
addressing video coding capabilities ranging from very low bit rate, low frame rate, “postage
stamp” resolution video for mobile and dial-up devices, through to entertainment-quality
standard-definition television services, HDTV, and beyond. A flexible system interface for the
coded video is specified to enable the adaptation of video content for use over this full variety
of network and channel-type environments. However, at the same time, the technical design
is highly focused on providing the two limited goals of high coding efficiency and robustness
to network environments for conventional rectangular-picture camera-view video content.
Some potentially-interesting (but currently non-mainstream) features were deliberately left out
(at least from the first version of the standard) because of that focus (such as support of
arbitrarily-shaped video objects, some forms of bit rate scalability, 4:2:2 and 4:4:4 chroma
formats, and color sampling accuracies exceeding eight bits per color component).
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发表于 2006-7-20 09:33:00
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