Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: MPEG encoding


Related Topics
PAC

In the News (Mon 28 Dec 09)

  
  Digital TV Group | Reference | Tutorial | MPEG Encoding
MPEG takes the DCT compression algorithm and defines how it is used to reduce the data rate, how packets of video and audio data are multiplexed together in a way that will be understood by an MPEG decoder.
MPEG itself is split into three main sub-groups, one responsible for each part, and a number of other sub-groups to advise on implementation matters, to perform subjective tests, and to study the requirements that must be supported.
Compliant MPEG decoders are defined as being capable of decoding all bit-streams that comply to one of the defined profiles and levels.
www.dtg.org.uk /reference/tutorial_mpeg.html   (2039 words)

  
 MPEG Video Encoding Process (MPEG-2)
A word about MPEG encoding — It is a complex task to compress the original audio and video content material (approximately 2.5GB of information per minute) and reduce the size of this data into a manageable stream of information that can be placed onto a DVD disc.
MPEG encoding retains the information about a reference frame (also known as an ‘I’ frame) then scans subsequent frames for differences in the content from frame to frame.
While this MPEG description may be simple, the process is not and many factors within the compression (encoder) can affect the final output both in image detail and quality.
www.oneoffcd.com /info/mpeg.cfm   (243 words)

  
 MPEG Audio
MPEG standards for digital audio cover encoding of audio, either by itself or as the audio component of a multimedia file or stream.
MPEG encoders rely on the resolution used in the uncompressed audio file to set the range of resolution that will be used for the encoded file.
The resolution of the encoded file is varied according to the complexity of the signal to achieve compression.
www.teamcombooks.com /mp3handbook/13.htm   (2692 words)

  
 Learn more about MPEG-2 in the online encyclopedia.   (Site not responding. Last check: )
In progressive scan streams, the basic unit of encoding is a frame, while in interlaced streams, the basic unit is a field.
P and B pictures are first subjected to a process of "motion compensation", in which they are correlated with the previous (and in the case of B pictures, the next) image.
The "motion vector" that maps the macroblock to its correlated area is encoded, and then the difference between the two areas is passed through the encoding process described below.
www.onlineencyclopedia.org /m/mp/mpeg_2.html   (1133 words)

  
 GFF Format Summary: MPEG
MPEG is used to encode audio, video, text, and graphical data within a single, synchronized data stream.
MPEG (pronounced "em-peg") is an acronym for the Motion Picture Experts Group, a working group of the International Standards Organization (ISO) that is responsible for creating standards for digital video and audio compression.
MPEG audio compression can reduce this data down to approximately 256 Kbits/second for a 6:1 compression ratio with no discernible loss in quality (lower reductions are also possible).
netghost.narod.ru /gff/graphics/summary/mpeg.htm   (2757 words)

  
 MPEG Encoders
The encoding process can't really tell the difference between picture content and noise, so the noise portion of the signal takes up precious memory that could be better spent of content.
MPEG achieves its high compression rates by exploiting the fact that one video frame is very much like the frame that precedes it.
MPEG encoding chips were very expensive when first introduced, costing over $2,000 for a 2-inch square piece of silicon, but prices are rapidly retreating with increased competition, and ever growing market size to offset the massive RandD costs to create them.
www.stagetools.com /bill/Encoder.htm   (1921 words)

  
 Dr. Dobb's | Motion Estimation & MPEG Encoding | May 1, 2004
Although the MPEG specification does not explicitly describe the encoding process, it does dictate how the encoder must generate the video bitstream so that it can be decoded by a "model decoder." Consequently, you are free to experiment with various encoding algorithms, so long as the integrity of the output bitstream is maintained.
In the simplified MPEG encoder in Figure 1, motion estimation refers to the encoding step where a video frame is partitioned into nonoverlapping 16×16 macroblocks (MBs).
MPEG frame repetition rates typically range from 24 to 30 frames per second (fps), so any method that reduces the number of calculations by even a single order of magnitude is worth investigating.
www.ddj.com /184405648?pgno=1   (3045 words)

  
 MPEG . ORG - MPEG Starting Points and FAQs
MPEG (pronounced M-peg), which stands for Moving Picture Experts Group, is the nickname given to a family of International Standards used for coding audio-visual information in a digital compressed format.
MPEG is originally the name given to the group of experts that developed these standards.
The convener of the MPEG group is Leonardo Chiariglione aka the father of MPEG.
www.mpeg.org /MPEG/starting-points.html   (2066 words)

  
 MPEG encoding systems
MPEG coding systems are based on economics in an important, and intentional way: put the cost at the sending end; make the encoders complex and expensive because there are few of them; and make the decoders cheap and simple because there are more receivers than transmitters.
What we perhaps didn't know when MPEG was first shown to the public was that with sufficient research and development the result would create such a huge demand that encoders too would become (relatively) cheap and ubiquitously available in many professional applications.
Real-time encoders are not yet available for HDTV H.264, but two manufacturers of MPEG equipment are expected to have H.264 real-time hardware encoders for standard definition at NAB2004.
bg.broadcastengineering.com /ar/broadcasting_mpeg_encoding_systems   (1053 words)

  
 Alcorn McBride DVM2 MPEG Encoding Information   (Site not responding. Last check: )
MPG is short for MPEG, which stands for Motion Picture Experts Group, the organization that codified the audio/video compression scheme used in the DVM2.
The person encoding the material must be experienced and the hardware well-chosen, so users deciding whether or not to encode their material themselves should put a lot of thought into what would best suit their needs.
Video material encoded without regard to bleeding colors and motion artifacts will include them, so it is important for the user to decide whether these elements are acceptable.
www.alcorn.com /library/text/encoding/dvm2   (504 words)

  
 MPEG encoding - Wikipedia, the free encyclopedia
Wikimedia needs your help in the final days of its fund drive.
MPEG encoding is the process of converting video to the MPEG format for distribution or for archiving on to DVD.
MPEG encoding can be done purely in software or by using an MPEG encoding card or a video editing card with in-built MPEG encoding facilities.
en.wikipedia.org /wiki/MPEG_encoding   (83 words)

  
 MPEG Encoding Management Software – MPEG Composer 200
MPEG Composer 200 is a DVB compliant encoding management application that runs on top of Optibase's encoding platforms, giving you total control over the MPEG encoding process.
MPEG Composer 200's Device Control panel works together with the central encoding panel and MPEG Organizer™ to set frame-accurate start and stop points for exact and precise encoding.
MPEG Organizer lets you optimize your production facility for 24-hour-a-day efficiency: Prepare complex batch-encoding sessions ahead of time, then run them after-hours when your system is free for heavy-duty performance.
www.optibase.com /Content.aspx?id=363   (478 words)

  
 Optimal Parallel MPEG Encoding
The goal of Optimal Parallel MPEG Encoding is to derive a scalable, robust protocol to efficiently handle this computation.
The client module is the process that executes on the client machine, serving as a controller/dispatcher for the duration of the encoding process.
Initiating the encoding process is accomplished by using a DP remote procedure call (RPC in Figure 1).
www.cs.cornell.edu /Info/Projects/zeno/Projects/OPME/opme.report.html   (2591 words)

  
 Streaming Media, Inc.
MPEG’s multi-level technology standard for packaging and delivering digital media content is often touted as the big ticket for mainstream content delivery on the Internet and the highly valued convergence market.
MPEG has been used in many different applications since its introduction in the early 1990s.
The MPEG algorithm for video compression is based on a Discrete Cosine Transform (DCT), which operates on blocks of pixels in the image, or in the difference frame.
www.streamingmedia.com /tutorials/view.asp?tutorial_id=149   (2471 words)

  
 MPEG Video Encoding   (Site not responding. Last check: )
MPEG (Moving Picture Experts Group) is the ISO committee which is responsible for defining the various MPEG video specifications.
Each of the 6 blocks per macroblock is encoded by carrying out a Fourier transform of the pixels in diagonal lines (see diagram) which maps the 8 x 8 block to 1 x 64, prior to DCT encoding.
MPEG encoding can be allowed to degrade in this way to allow for lower bandwidths.
www.disctronics.co.uk /technology/video/video_mpeg.htm   (842 words)

  
 PocketTV - Guides and Free Tools to Make MPEG Files
MPEG conversion program, can take a MPEG 1 or MPEG 2 stream and convert it to another format, changing video parameters such as resolution, frame rate, audio sampling frequency, and even do some cropping and letterboxing.
An inexpensive, no-frill MPEG encoder plug-in for QuickTime.
This is probably the cheapest MPEG hardware encoder, and a good value for the price.
www.pockettv.com /encoding.html   (1358 words)

  
 MPEG Encoding Services
MPEG 2 - the standard for DVD delivery - is appropriate for full screen, high resolution presentation of your media.
When encoded at bitrates of 7 to 10 Mbps, your media will be virtually indistinguishable from your BetaCam master.
MPEG 2 playback requires a dedicated hardware decoder (also available from Media Cottage).
www.mediacottage.com /mpeg.html   (235 words)

  
 Parallel MPEG-1 Video Encoding
The encoding scheme used is similar to JPEG compression [13].
The encoding for B-frames is similar to P-frames, except that motion vectors may refer to areas in the future reference frame.
Table 11 shows the number of penalty frames and encoding speed for different values of S and T. The experiments to produce the table, as well as all parallel experiments, were run on a 9-machine cluster of HP 9000/ 720 computers connected by an Ethernet.
bmrc.berkeley.edu /research/publications/1994/120/msreport-fm.html   (7758 words)

  
 PCI MPEG-2 encoder cards and interfaces
MPEG MovieMaker 200S, Optibase's line of MPEG and Dolby Digital encoding platforms, uses sophisticated technology to provide you with a wide choice of options.
MPEG MovieMaker 200S boards come bundled with the MPEG Composer™ 200 Starter, Optibase's encoding management application, which allows you to start creating digital video right away and test encoding hardware.
MPEG MovieMaker 200S Networker offers features such as low delay, multi-board support and unbalanced audio inputs that are specially designed for the needs of video networking applications.
www.compumodules.com /optibase/mpeg-2-pci-encoders.shtml   (711 words)

  
 Optibase: PCI MPEG-1 encoder
MPEG MovieMaker 100S encoders are ideal for TV over IP streaming solutions, surveillance, asset management, distance learning and content creation applications.
MPEG MovieMaker 100S boards come bundled with the MPEG Composer, Optibase's encoding management application, which allows you to start creating digital video right away and test encoding hardware.
MPEG ComMotion tools include transmission and receiver server platforms as well as ActiveX development tools that jump-start the development needed to set up streaming applications.
www.optibase.com /Content.aspx?id=88   (415 words)

  
 MPEGRepair is a versatile MPEG encoding utility designed to both ease the difficulty of MPEG encoding and assist in the ...
MPEGRepair is a versatile MPEG encoding utility designed to both ease the difficulty of MPEG encoding and assist in the repair of troubled video streams.
Repair of an encoded video stream is eased by the ability to mark in and mark out video segments, then re-encode and replace the segment without the need to re-encode the entire stream.
Encoding complexity, combined with knowledge of the relative importance of each scene, provides a good guideline for the allocation of bits for the video and graphics components of a DVD disk.
www.pixeltools.com /MpegRepair.html   (1901 words)

  
 EETimes.com
PC OEMs are also demanding low-cost but high-quality encoding technologies as they add features like video e-mail, home-video editing and TV-program recording to models scheduled for launch this year.
Encoding is key to minimizing storage space and thereby reducing overall system cost for mass-market applications.
At that juncture, he said, "We believe a technique such as variable-bit-rate [VBR] encoding becomes a critical [point of] differentiation." VBR lets a system allocate bits dynamically, in accordance with the complexity of the picture it is encoding.
www.eetimes.com /news/98/1015news/mpeg.html   (1682 words)

  
 DVD MPEG-2 Encoding from Zapex - MPEG-2 Encoding, DVD Authoring
A word about MPEG encoding – Taking an original audio and video content material (approximately 2.5GB of information per minute) and reducing the size of this data into a manageable stream of information that will be placed onto a DVD disc, is a complex task.
MPEG encoding keeps the information about a reference frame (also known as an ‘I’ frame) then scans subsequent frames for differences in the content from frame to frame.
When it comes to encoding, saving the vast amount of high-quality video and audio associated with today’s content, onto a DVD format can be a monumental challenge.
www.bcdusa.com /dvd/zp300features.html   (2896 words)

  
 MPEG LA
Encoding product Licensees are required to give notice (covering the exclusion from the sublicense granted by Section 2.3) that encoding products may not be used in any manner for encoding MPEG-2 Packaged Media without a license under applicable patents (Section 7.16).
MPEG LA also offers to all Licensees an Addendum to the MPEG-2 Patent Portfolio License that will reduce royalty rates for MPEG-2 Packaged Medium products from January 1, 2007 forward.
Exempted from the 25% ceiling increase is a request by MPEG LA for a two-tier royalty rate for MPEG-2 Packaged Medium in the event a Movie of the same title is offered simultaneously to consumers for sale or rental at different prices.
www.mpegla.com /m2/m2-agreement.cfm   (1254 words)

  
 MPEG Encoding Services   (Site not responding. Last check: )
All encodings will be burned to a CD and returned with your tape.
Playable on any MPEG equipped PC and usable for Mastering if duplication will be needed.
If Copyrighted material is to be encoded please be sure that you are the owner of the Copyright on the source tape.
pages.prodigy.com /pc_tamers/mpeg.htm   (356 words)

  
 Tsunami MPEG Encoder (TMPGEnc)
It's also the most tweakable encoder: all the commercial encoders are more limited in their encoding parameters, either because they have a more expensive "power user" product, or in order to simplify their interface.
TMPGEnc also has a pair of "real time" encoding modes, but I think they're works in progress: they appear to have no practical improvements in speed or quality over their normal variants.
The frame grabs and the bitrate chart were made with the encoder in CQ mode at normal motion estimation speed.
tangentsoft.net /video/mpeg/reviews/tmpgenc.html   (861 words)

  
 Optibase MPEG encoding management application software
MPEG Composer 's central control panel puts you within easy reach of all the tools needed to carry out encoding sessions.
MPEG Composer's Device Control panel works together with the central encoding panel and MPEG OrganizerT to set frame-accurate start and stop points for exact and precise encoding.
MPEG Composer's user-oriented interface lets you browse through your video source and set Start and Stop points as soon as you reach the desired frame.
www.compumodules.com /optibase/mpeg-encoder-software.shtml   (500 words)

  
 Vitec Multimedia MPEG encoding hardware
Hardware MPEG encoders are now becoming established in the consumer PC marketplace and many of our non-linear editing systems will perform some sort of MPEG encoding.
However, there are very few dedicated MPEG I and II capture cards with professional video inputs.
Batch encoding support with V-Lan device control for professional VTR's is available as an option for MPEGProfiler.
www.zenvideo.co.uk /vitec.htm   (221 words)

  
 Ligos LSX-MPEG
Ligos' encoding time is predictable: although the standalone encoder doesn't give a completion time estimate, it does say how many frames it has encoded, how many frames are in the movie, and how long it has taken.
They may be easier to tell apart when encoding different kinds of video, or encoding with different settings than used for this test.
In other words, the faster the encoding mode you choose, the higher the frameserving overhead is relative to the encoding time.
tangentsoft.net /video/mpeg/reviews/ligos.html   (2113 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.