Thursday 26 January 2012

video in Interactive Media


Introduction


Interactive Media is used almost every single day, several times, in a different variety of platforms, e.g. the use of mobile phones, or watching videos online, it can be known also as Digital Media or New Media.
What are some of things we use in interactive media, things like CD-ROMs, DVDs, Mobile Phones, Interactive Television, YouTube and Spotify ECT, Anything that is designed to have multiple options available to the user. These are constantly updated by the companies that own them for all the latest gadgets  (being touch screen, voice activated etc.).
Why we use them, just simple things, primarily for what they are designed for. CDs for listening to music, DVDs for watching videos/films, Mobile Phones to access the internet, phone/text people, Interactive Television to watch a large variety of channels. YouTube is to watch short/long videos that are entertaining, educational etc. and  Spotify is to listen to lots of different music.














Different File Extensions


MPEG file

Movie or video clip that uses MPEG compression, a standard developed by the Moving Picture Experts Group (MPEG); commonly used for sharing video files on the Internet.
The MPEG video format uses separate compression for audio and video tracks. Video is compressed with MPEG video encoding. Audio is compressed using AAC compression, the same type of audio compression used in .AAC files.

MPEG is a lossless audio compression scheme that allows you to reduce the size of digital audio data without reducing the sound quality. MPEG Lossless is a recent extension of the well-established MPEG audio standard. It has originally been standardized under the name "MPEG-4 Audio Lossless Coding (ALS)".

ACC file-


ACC stands for Advanced Audio Coding. ACC is a type of digital audio file. AAC generally offers higher-quality sound than an MP3 while using the same amount of disk space.
While AAC is often a Apple format, it can be played on a range of non-Apple devices, including the Microsoft Zune, Sony PlayStation 3 and PSP, the Nintendo Wii, and mobile phones running Google's Android OS, among many others.
Like MP3, AAC is a lossy format, meaning that in order to compress CD-quality audio files into smaller files suitable for transmission over the Internet, some data that will not impact the listening experience of the file. As a result of the compression, AAC files do not sound identical to CD-quality files.
MOV file

MOV is a file extension used by the QuickTime-wrapped files. MOV is a video format that is used in a lot of digital cameras. The most common player is quicktime from Apple computers. The format was created by Apple Computer to work with multimedia files. Though MOV files are quite often found in the web, to play them on Windows computer you have to install an extra component or convert to other format. MOV is a container format and can contain video, animation, graphics, 3D and virtual reality content or text (for example subtitles.

The advantage of MOV files is the ability to contain abstract data references. That means that they can be easily edited.

AVI file

AVI files can be played by various video players, but the player must support the codec used to encode the video data.

The AVI file format remains to be one of the toughest files to decipher, even during this age when processors are high and powerful, armed with large memories and a quick internet speed. As a high quality file, there is the need to always have it compressed for easier loading time and transmission speed as well. The sound and video files are one of the hardest files to process for any computer, no matter how powerful they are.

                                                    
AVI stands for Audio Video Interleave. AVI files have two ways of compression, either by lossless compression or by the lossy compression. The two very much differs from the way they are compressed and also with the resulting sound and video after the compression has taken place.





Lossless
In the lossless type of compression, no data is lost during the compression process.  When the compressed file is decompressed, the result is identical to the data before compression.  Computer programs, software applications, databases etc. are compressed using lossless techniques, since a change in even one bit of data can make them useless or produce incorrect results.
Lossy
Lossy compression reduces file size by permanently eliminating redundant information, so that only a part of the original data is retained and reproduced.  Most video and audio compressors compress data in ways that are lossy, but produce very high compression levels. In audio compression, certain techniques are used to remove non-audible components of the audio signal.  Lossy compression techniques are known to produce high compression.

WMV file

WMV is short for Windows Media Video. This video format was developed by Microsoft upon non-standard version of MPEG. But as WMV was standardized as an independent standard and is considered to be a unique format now.
The video stream is often combined with an audio stream of Windows Media Audio. WMV deals with all types of video content. The advantage of the format it that it allows to compress large video files yet retaining considerably high quality. WMV is similar to ASF (Advanced Systems Format). ASF is a streaming media format developed by Microsoft. ASF files can contain video, audio, slide shows and synchronized events.

SWF file


SWF (Swiff) was originally acronym for "Shockwave Flash" since the SWF format was designed for Shockwave Player. However, SWF files have now become a standard means of publishing compressed Flash content on the Web. Therefore, the SWF acronym has been modified to mean "Small Web Format". Animation created with Adobe Flash; may contain text as well as both vector and raster graphics; also may include interactive actions written in Action Script; plays in Web browsers that have the Flash plug-in installed. Macromedia Flash is now called Adobe Flash.





3GPP

The 3GP file type is primarily associated with '3GPP'. 3GPP and 3GPP2 are the new worldwide standards for the creation, delivery and playback of multimedia over 3rd generation, high-speed wireless networks. Defined by the 3rd Generation Partnership Project and 3rd Generation Partnership Project 2 respectively, these standards seek to provide uniform delivery of rich multimedia over newly evolved, broadband mobile networks (3rd generation networks) to the latest multimedia-enabled wireless devices. 3GPP and 3GPP2 are based on the MPEG-4 standard which was derived from Apple's QuickTime. 

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