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What is AVI?

What is AVI?

AVI has become so wide spread that many people consider it de facto standard for storing video and audio information on PC.

What is AVI?
Audio Video Interleaved, known by its initials AVI, is a multimedia container format introduced by Microsoft as part of its Video for Windows technology.

AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. Like the DVD video format, AVI files support multiple streaming audio and video, although these features are seldom used.

Popular AVI Software
1:AVI Splitter for Mac: split, cut, trim AVI Video Files for uploading to Youtube, Facebook etc video-sharing web, application and device etc on Mac OS.
2:AVI joiner for Mac:join or merge 2 or more separated or individual AVI(Divx, Xvid), HD AVI Video Files into one on Mac os x
3:AVI to Flash for Mac: can help you convert AVI, HD AVI, XVID, DIVX etc video files to Flash SWF/FLV files and generate a HTML web page embedded on Mac os x.

 Advantage of AVI
1: AVI Can be used as a starting point to create playable DVDs.
2: AVI can play in mainstream media players such as Windows Media Player.
3: Choice of codecs means you can achieve a high rate compression if you experiment.

Disadvantage of AVI
1: Cannot contain some specific types of VBR data(such as MP3 audio at sample rates below 32KHz) reliably.
2: AVI is not intended to contain variable frame rate material. Workarounds for this limitation increase overhead dramatically.
3: Overhead for AVI files at the resolutions and frame rates normally used to encode feature films is about 5 MB per hour of video, the significance of which varies with the application.
4: AVI does not provide a standardized way to encode aspect ratio information, with the result that players cannot select the right one automatically (though it may be possible to do so manually).
5: There are several competing approaches to including time-code in AVI files, which affects usability of the format in film and television postproduction (although it is widely used). An equivalent of the Broadcast Wave extensions, designed to standardize postproduction metadata for wave audio files, has not emerged.

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One Response to What is AVI?

  1. Angelia says:

    I always download video in .avi files, and play with quicktime..

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