What are the differences between SWF and FLV?
There are limitations in the SWF format. The number of frames should be within 16000. The flash player won’t play the frames after the 16000th frame, even if your SWF file contains more than 16000 frames. However, there is no such limit in FLV format, and our software generates an integrated FLV player (in SWF format) for the FLV file.