Flv Convertor is used to convert any media format to Flv format using FFmpeg tool. Normally, it is used by social networking sites to convert any media format to flv format on-the-fly while user uploads the file. It is developed by C#.NET 2.0 and provided as open source and free software with GNU General Public License . You are encouraged and invited to contribute.

Flv Converter is an open source project and so naturally relies support from a community of users with a shared interest in the project. Having trouble using some aspect of it? or Want to know the list of bugs? or Like to receive an email when updates are made or Want to simply provide feedback or ideas for further development? Then Flv Converter Google Group is the place to go.

[1] Reference the FlvConverter.dll to your asp.net project
[2] Add "ideaBubbling.FlvConverter" namespace in your .cs file
[3] "FlvConvertorWebClient" class has 3 static methods to accomplish the flv conversion. They are
(i) ConvertAsFlv method is used to start the flv conversion asynchronously.
FlvConvertorWebClient.ConvertAsFlv(page, ffmpegPath, uploadedFilePath, flvFilePath)
page: page class instance
ffmpegPath: the path of the ffmpeg tool
uploadedFilePath: the path of the file that have to be converted.
flvFilepath: the converted flv file name.
(ii) FlvConvertorWebClient.GetFlvConvertionStatus method is used to check the flv conversion status, if it is completed or not.
FlvConvertorWebClient.GetFlvConvertionStatus(page)
page: page class instance
(iii) FlvConvertorWebClient.GetFlvConvertionErrorMsg method is used to get the error message if the FlvConvertorWebClient.GetFlvConvertionStatus(page) is failed.
FlvConvertorWebClient.GetFlvConvertionErrorMsg(page)
page: page class instance

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FlvConverterUtility is a wrapper class of ffmpeg tool that actually performs the task.The FlvConverterWebClient class provides extra layer for FlvConverterUtility class which enables us to use in web applications. If you want to use this in your windows service/apps, you have to write a FlvConverterWinClient class.
Its used a "mediaplayer.swf" flv-player to play flv video. You can get it at jeroenwijering web site
For more info: please have a look at the test applicaiton.