Besides creating FLVs, you can convert a media file (AVI, MPEG and so on) to a
flv file. This software is a DLL to create Flash
video files.
FLV Encoder SDK is able to create FLV, you can write it to a file or to a stream. With FLV Encoder SDK you can convert a media file (AVI, MPEG and so on) to a
flv file.
If you can play a media file in Media Player (for example), FLV Encoder SDK can convert it to
flv file. FLV Encoder SDK uses uncompressed audio and Screen
video encoder to compress video. Simple API. Samples are included.
Limitations:
Adds a banner to the result FLV
MP4 Converter
1.41 MB 
$ 199