6 Replies Latest reply: Oct 15, 2012 7:45 AM by Adam Wenocur
stinger45 Level 1 (0 points)

I have a .flv video. I do I play it on my I mac? 

iMac (20-inch Early 2008), Mac OS X (10.6.8)
  • Niel Level 10 (298,673 points)

    Install Perian.



  • Limnos Level 8 (47,327 points)

    VLC media player - http://www.videolan.org/vlc/ - general media player that plays just about anything.


    Perian codecs for Quicktime - http://www.perian.org - plugins to add functionality to Quicktime for playing additional audio and video formats.


    Quicktime audio problems, Perian, VLC - http://discussions.apple.com/message.jspa?messageID=9013669 - read note about uninstalling prior DIVX support before installing Perian.

  • Yodrak Level 1 (10 points)

    I have installed Perian, and I get a message box saying:


    The document "file.flv" could not

    be opened.  The movie's file format isn't



    Lion 10.7.4

    Quick Time Player 10.1 (501.22)




    Also, I have read the Perian note about uninstalling prior DIVX support, but the note does not explain HOW to uninstall the listed items.

  • Dansyacht Level 4 (2,125 points)

    I have to second Limnos' first suggestion.  The answer to "How do I (play, view etc) a (media file of any type) on my (PC, Mac etc)" is almost always "GET VLC!"  In the best tradition of Apple, it "Just works!"  And it is FREE!

  • Yodrak Level 1 (10 points)

    Well, I think I've found my problem - the .flv files are not playing because they are not fully downloading.  It took me awhile to recognize that.  Now I've got to figure out why that's happening.

  • Adam Wenocur Level 2 (285 points)

    Take a look at the “range” CGI parameter in the HTTP request for the flv file.  If it doesn't start with 0, it won't include the necessary header info that players can recognize to demux the stream.  It seems that YouTube has recently started segmenting the flvs, and concatenating them in the Flash player.