The format of flash files: .FLV and .SWF
There are two extensions for flash video format: .flv and .swf. What is the difference between them?
(1) A .flv file (flash video) is a video stream and audio based on picture. If you are running a streaming service, flv will be a good choice. The upstream condition is that any part of this file can be accessed by the client terminal and no time is waiting for download. Then again, running a streaming service is expensive.
(2) .swf is also in the Macromedia Flash file format, is a complete video-audio file, and has scripts and more. This will facilitate HTTP (progressive) downloads, also known as psuedo streaming. When a part of the file is downloaded, the video clip will be played immediately, but the client will wait for the flash file clip to be downloaded before accessing (cannot be fast forwarded), unless the entire file is fully downloaded. This is also what we often talk about, it is a simple, inexpensive, and easy way to stream your video medium. SWF is not the official abbreviation, and some people have claimed that it is the abbreviation of ShockWave Flash or Small Web Format.
Embed flash in the page can be used as follows:
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