FLV (Flash Video) – A versatile format utilized by Adobe Flash Player.Take note that this format is not compatible with Apple devices.
It creates small-sized videos better than MP4 and is popularly used for streaming online videos.
WMV (Windows Media Video) – A Microsoft-designed video format and is generally preferred in Windows media players.With an MP4 configuration, you can create high-quality videos in small file sizes even if they contain still images, audio files, and texts.
It’s also one of the earliest digital video formats.