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Joomla! 1.5 Content Administration by Tracey Porst

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Using video files

Video files are generally large due to the amount of content they contain and their length. It's beyond the scope of our book to describe them in detail, but in basic terms, they are a linear sequence of still images placed together to create a sequence of movement, usually accompanied by an audio track. Original video files are compressed using a codec to produce a compressed video file. The various codecs produce different results for file size, quality, and export.

Video files play in the browser by downloading the data through the Internet, progressively streaming it so the movie begins to play before the whole file has downloaded. Audio files work in a similar way, but are often not as large.

The final quality of a video ...

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