1
AUDIO MP3
try to explain briefly that hides behind an MP3 and underlying capabilities. To find out how it works do not have (or want) because they get to the deep mathematics of the psychoacoustic model just enough for us to understand some relatively simple. Acronyms MP3
respond to short for MPEG 1 layer 3. It is a perceptual coding algorithm developed by the consortium MPEG (Moving Picture Expert Group) together with the Fraunhofer Institute of Technology has finally been standardized as standard ISO-MPEG Audio Layer 3 (IS 11172-3 and IS 13818-3) and becomes an important advance over previous developments (Layer 1 and Layer 2).
MP4 MP4 is an audio encoding format associated with the extension mp4. MPEG4 is an international standard video codec created especially for the web. It is a compression algorithm that encodes audio and video data storage optimizing their quality, encoding and distribution networks. With modern cameras, capture and encoding is integrated in a single action, which optimizes the potential of the user to broadcast. It is also called MP4 players that have a screen capable of playing videos and images.
A MP4 file has audio and video included. It allows a faster download time, with a 16:1 compression addition, the MP4 can be used to create full audio files of a quality 20-second audio clips (MP4/20s).
WAV WAV Waveform audio format is the format for storing sound in files developed jointly by Microsoft and IBM.
Support for WAV files was built into Windows 95 which made him de facto standard for sound files on PCs
WAV sound files end with the extension. Wav and can be played with almost all Windows applications that support sound.
The WMA WMA is windows media audio files, are better than mp3 in terms of space they occupy. An mp3 file of about 4 minutes and quality 128 kb (about 4.8 mb) is equivalent to a 64 kbs wma file (about 1.93 mb). The high compression wma support. p. eg. about 64 kbs still maintain a certain quality, while the mp3 below 128 kbs, usually begins to decrease sound quality.
2
VIDEO
MPG MPG file, a file format that can store audio and video files (music videos for example), with incredible data compression You can view them with Windows Media Player Windows Media.
The Moving Picture Experts Group (Motion Picture Experts) commonly referred to as MPEG, is a working group ISO / IEC responsible for developing standards for encoding audio and video. Their first meeting was in May of 1988 in Ottawa , Canada . Since its first meeting, MPEG has grown to include 350 members from various industries and universities . MPEG's official designation is ISO / IEC JTC1/SC29 WG11.
MPEG has standardized the following compression formats and ancillary standards: MPEG-1 : initial standard of audio and video compression. Later used as the standard for video CD includes popular audio compression format Layer 3 (MP3 ). MPEG-2
: audio and video standards for broadcast-quality television . Used for satellite TV services like DirecTV (U.S. Chain of satellite television direct broadcast ), digital television signals by cable and (with slight modifications) for DVD video discs .
MPEG-3: Originally designed for HDTV ( High Definition), but subsequently abandoned for MPEG-2. MPEG-4: Expands MPEG-1 to support "objects" audio / video, 3D content, low bitrate encoding and support for DRM (copyright protection). MPEG-7
: formal system for describing multimedia content MPEG-21: MPEG describes this future standard as a "multimedia framework."
AVI Audio Video Interleave AVI means or Audio Video Interleaved and developed by Microsoft. "Sandwiched" means that an AVI file's audio and video data are stored consecutively in layers (a segment of video data is immediately followed by another audio). It is the most widespread format for data handling audio / video on a PC. AVI is an example of a de facto standard. "
In the first moments of the popularity of home DV there was much confusion about the types of employing capture AVI digital video (DV). We have talked at length AVI2 AVI1 and error and partly stemmed from the comments more mixing up the name of the AVI and VfW codecs used to store in this format.
AVI format defined by Microsoft for Video for Windows technology in 1992. Was subsequently improved by extensions OpenDML group format Matrox company. These extensions are supported by Microsoft, although not officially. 2.0El known as AVI AVI format can store both a data stream multiple streams of video and audio. The precise format of these flows is not subject to AVI format and is interpreted by an external program called codec. That is, the audio and video content in the AVI can be in any format (AC3 / DivX, or MP3 / Xvid, etc.). Therefore it is considered a container format . For all the flows may be reproduced simultaneously need to be stored in an interlaced. Thus, each file fragment has enough information to play a few frames with the corresponding sound.
wmv Windows Media Video (WMV) is a generic name given to all compression algorithms located in the set owner of video technologies developed by Microsoft , part of the framework Windows Media .
WMV is not built solely on Microsoft's internal technology. Since version 7 (WMV1), Microsoft has used its own non-standard version of MPEG-4 . The video is often combined with sound in Windows Media Audio format . Video WMV
usually is packaged in a container multimedia, such as AVI or ASF . The resulting files are the. Avi if the container is of this type. Wmv if it is a video only file (. Wma is the equivalent for audio) or. Asf if it is an ASF container, and audio content video.
WMV format includes certain features on the use of Digital Rights Management (DRM). However, these features can be removed with tools such as Sidda, DRMCreep, drmdbg or drm2wmv.
Version 9 format used by Microsoft was referred to the Society Motion Picture and Television Engineers (SMPTE) for approval as a standard, under the code name for VC-1 . This codec is also used to distribute high-definition video on standard DVDs in a format that Microsoft has called WMV HD, which can be played on both computers as desktop widgets. ENTERTAINMENT
GIF (Compuserve GIF or Graphics Interchange Format) is a graphics format widely used in World Wide Web , both images to animations . The format was created by CompuServe in 1987 to provide a format color image for their file downloading areas, replacing their earlier RLE format black and white. GIF became popular because it could use the compression algorithm LZW (Lempel Ziv Welch) compression for the image, which was more efficient than the algorithm Run-Length Encoding (RLE) formats used by PCX and MacPaint . Therefore, large images could be downloaded in a reasonable period of time, even with very lentos.GIF modems is a lossless format for images with 256 colors, limited by a restricted palette of colors to this number. For this reason, images with more than 256 colors (color depth than 8 bits ), the image must adapt by reducing their colors, producing the consequent loss of calidad.Existen different versions of this format (GIF87a, GIF89a ...). Its main features are: color depth: 8 bits maximum (256 simultaneous colors). • Use of color indexed through a palette can be of different sizes, depending on the value of the Size of Local Color Table, which has a size of 3 bits. The number of colors can be calculated using the formula: 2 (Size of Local Color Table +1) This allows to use a palette GIF 2,4,8,16,32,64,128 or 256 colors. • Although using transparent layers (maximum of 256 colors in each) separated by 0 ms (simultaneous) including, if they can display images with more than 24 different colors [1] and [2] , allowing a color display real. Despite this, this technique is inefficient and rarely used, and when done is mainly to demonstrate this ability, sometimes, these images do not appear simultaneously, but will appear every one of the layers on. In this case, each layer is a square 16 by 16, which at best could display 256 colors, the image is divided into those boxes, and are superimposed on otro.Permite a 1-bit transparency, so each pixel of the image can be transparent or not. This differs from formats such as PNG , which also provides transparency variable.Sus latest versions can do simple animations, but the compression is very deficiente.Permite use interlaced images, so images are displayed in full nothing more start download, but with low definition progresses to fully charge the browsers . Unisys, the patent owner LZW algorithm used in the GIF format for years demanded the payment of royalties by use. Compuserve, by developing the format, did not know that LZW was covered by a patent. Because of this, any program that can open or save GIF files compressed with LZW should comply with their demands.
INSTRUCTIONS TO MAKE A MASTER DOCUMENT
1-First, do a investigacuion on the Internet about the different file types, for audio and video.
2-and we have the information in Word, we must realia a master document with the information you find.
3-then we we were in sight of schemes.
4 - and there every title we have in the research work we put in title according to whether the title 1 or title 2.
5-and when we selected titles. create a subdocument.
6-in menu bar choose an icon in which we were to choose to create new document.
7 - and finally we have everything in subdocument, we click a box that comes in every title and we have to bring a new document on the information we choose.
8-keep and all.
NOTE:
herein learned how to make a new document and it has and that it serves.
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