7 Replies Latest reply: Jun 15, 2013 8:38 PM by autnagrag
richard90 Level 1 Level 1 (0 points)

I have a large number of MP4 files encoded with Handbreak that played perfectly on all my Mac's under Snow Leopard and could be synced to my iPad.  Since upgrading to OS X Lion these files won't play in Quicktime and won't sync to my iPad.  The quicktime error message is:


The document "filename.m4v" could not be opened.  A required codec isn't available.


The file is being reported by finder with the following codecs: H.264, AC3, AAC, Text


Can anyone help please?


iMac, Mac OS X (10.7)