Leawo Blu-ray Player is also a wonderful and free FLV player that could play back all FLV files and downloaded YouTube files, on both Windows and Mac. To play back FLV files, there are a lot YouTube FLV players like VLC, Flash Player, MPC-HC, etc. Now, many streaming services have dropped Flash in favor of HTML5. Therefore, when we think of FLV, we usually get into YouTube and other online video sharing sites, even though not all online video sharing sites are using FLV format as the main format.
Flash Video has long been the standard video format used by nearly all embedded video on the internet including the videos found on YouTube, Hulu, and many more websites. There are two different FLV formats, F4V for H.264-based content and open FLV for other supported codecs. FLV is a file format used by Adobe Flash Player and Adobe AIR to store and deliver synchronized audio and video streams over the Internet.