HT3775: Media formats supported by QuickTime PlayerLearn about Media formats supported by QuickTime Player
Currently Being ModeratedOct 14, 2013 1:26 AM (in response to mana12345)
like Niel said, install Perian: you do not have to do anything anymore when you encounter the next flv (or other). Converting has the disadvantage, that it will degrade the quality (more or less), and you have to do it for each next time you encounter a flv (or other) that you want to play.
Perian works fine in OSX including mountain Lion.