April 2010
Intermediate to advanced
588 pages
19h 56m
English
Content preview from Visual Media Coding and TransmissionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
10.4 Performances of Video Transmission in Inter-networked Systems
An MPEG-4 encoder and decoder pair are implemented in real time at the mobile terminals. The connection setup is based on IP/UDP/RTP transport protocols [23]. Video frames are segmented if the video frame size exceeds the specified maximum transfer unit (MTU) size, before being encapsulated into IP packets for transmission. At the receiving end, if IP/UDP/RTP headers are found to be corrupted, data encapsulated within those packets is dropped at the network layer.
The aim of the QoS mapping emulation system is to obtain the optimal bearer configurations for the EGPRS network and the UMTS network. Experiments are carried out to investigate the influences of different bearer configurations on an EDGE-to-UMTS system. First, video transmission is emulated in both EDGE and UMTS systems separately. Second, encoded video is transmitted over the joint EDGE-to-UMTS system. The transmission is emulated over the EDGE system. Then the output data from the EDGE emulator is forwarded to QoS mapping emulator, where the appropriate radio resources are allocated for transmission over the UMTS system. After transmission over the UMTS system, received data is forwarded to the receiving terminal emulator for decoding and display.
10.4.1 Experimental Setup
At first, video transmission emulations are made in both the EGPRS emulator and the UMTS emulator. The MPEG-4 decoder will record the received video data and write to a YUV file. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.