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HT201290: If QuickTime Player can't open an audio or video file

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Title			Views	Latest activity
I upgraded to Mountain Lion, and find that QuickTime no longer works for my avi-files. What to do?? in OS X Mountain Lion by Barney-15E	Show 0 Bookmarks0	2	175	August 9, 2013 9:58 AM by Barney-15E
how do i open an mv4 on my macbook pro? in Mac OS X v10.7 Lion by Carolyn Samit	Show 0 Bookmarks0	1	284	August 6, 2013 5:28 AM by Carolyn Samit
how do i watch an mpeg4 video in Mac OS X v10.7 Lion by 3l3cktr0	Show 0 Bookmarks0	1	173	August 5, 2013 3:19 AM by 3l3cktr0
I could not open video file name with .flv in OS X Mountain Lion by Jenniferfromsgp	Show 0 Bookmarks0	1	165	August 2, 2013 8:43 PM by Jenniferfromsgp
I used to be able to play Flash Movies, when I updated my Flash everything went south in OS X Mountain Lion by Linc Davis	Show 0 Bookmarks0	2	159	August 1, 2013 8:00 PM by Linc Davis
required codec is not availible in Mac OS X v10.7 Lion by dromney	Show 0 Bookmarks0	3	367	July 31, 2013 7:56 PM by dromney
hi i have a question in OS X Mountain Lion by Niel	Show 0 Bookmarks0	1	79	July 31, 2013 8:29 AM by Niel
How do I know what kind of update I need to play downloaded videos? in OS X Mountain Lion by jweigel84	Show 0 Bookmarks0	2	141	July 30, 2013 2:12 PM by jweigel84
My Macbook Pro will not play an "MPEG-4" file I had converted from an MTS file. It says, "QuickTime Player can't open "QA 1 of 5.mp4" because the movie's file format isn't recognized." in Mac OS X v10.7 Lion by Topher Kessler	Show 0 Bookmarks0	1	1419	July 29, 2013 1:26 PM by Topher Kessler
i just want u to help me to use video and music in Mac OS X v10.7 Lion by Vincent niyibizi	Show 0 Bookmarks0	0	149	July 27, 2013 4:39 AM by Vincent niyibizi
download quick time player in OS X Mountain Lion by Matthew Morgan	Show 0 Bookmarks0	6	472	July 26, 2013 3:03 PM by Matthew Morgan
trying to play a .mov file in OS X Mountain Lion by B.Alexandra	Show 0 Bookmarks0	9	510	July 26, 2013 10:36 AM by B.Alexandra
i am trying to watch a movie on Quick time with the extension .FLV and it will not play. I updated my flash. in OS X Mountain Lion by Eric Root	Show 0 Bookmarks0	5	232	July 22, 2013 8:51 AM by Eric Root
On my PC if I use in QTP rtsp protocol to see video on my Vivotek camera I get : bad request, but in VLC player it work without problem. in OS X Mountain Lion by Toraw	Show 0 Bookmarks0	0	170	July 21, 2013 2:57 AM by Toraw
CANNOT OPEN VIDEO in OS X Mountain Lion by CleverTUTU	Show 0 Bookmarks0	3	210	July 18, 2013 8:48 AM by CleverTUTU
What program can i use to convert a Mpeg4 video file in Mac OS X v10.7 Lion by Nikkers94	Show 0 Bookmarks0	0	111	July 17, 2013 8:45 PM by Nikkers94
How can I play mpg movies on my mac os x 10.6.8 in Mac OS X v10.7 Lion by Kappy	Show 0 Bookmarks0	1	204	July 17, 2013 6:11 PM by Kappy
Action Movie FX app for my iPHONE 4s in OS X Mountain Lion by Eric Root	Show 0 Bookmarks0	3	522	July 15, 2013 8:52 AM by Eric Root
How to put Motorola Electrify cell phone movies on iMac computer in Mac OS X v10.6 Snow Leopard by macjack	Show 0 Bookmarks0	1	234	July 14, 2013 7:57 PM by macjack
File formats for video on Mac in OS X Mountain Lion by marianfrommontara	Show 0 Bookmarks0	3	244	July 14, 2013 7:08 PM by marianfrommontara
How can I play a .g64 video file on OS X? in OS X Mountain Lion by Eric Root	Show 0 Bookmarks0	1	3199	July 12, 2013 12:21 PM by Eric Root
how do i open an avi file in OS X Mountain Lion by Niel	Show 0 Bookmarks0	1	125	July 10, 2013 1:33 PM by Niel
how do I view rm.ram in OS X Mountain Lion by LDjames	Show 0 Bookmarks0	5	243	July 10, 2013 11:56 AM by LDjames
how to open flv file in Mac OS X v10.7 Lion by petermac87	Show 0 Bookmarks0	5	897	July 9, 2013 9:22 PM by petermac87
i cannot play my quick player in OS X Mountain Lion by Daniel Ebeck	Show 0 Bookmarks0	1	202	July 8, 2013 3:55 AM by Daniel Ebeck
How do I import movies into iTunes in Mac OS X v10.7 Lion by ParsonsMac	Show 0 Bookmarks0	0	127	July 7, 2013 2:55 PM by ParsonsMac
unable to open .avi file in Mac OS X v10.7 Lion by snowboard07	Show 0 Bookmarks0	2	393	July 5, 2013 2:18 AM by snowboard07
I have just loaded a .mov file onto my imac and cant get it to play - do I need to convert it? in Mac OS X v10.7 Lion by babowa	Show 0 Bookmarks0	4	296	July 4, 2013 2:46 PM by babowa
Using .flv files with iBooks Author in Mac OS X v10.7 Lion by julian Dunlop	Show 0 Bookmarks0	0	233	July 4, 2013 6:05 AM by julian Dunlop
cant play .mov in Mac OS X v10.7 Lion by Garth nsw	Show 0 Bookmarks0	0	170	July 3, 2013 9:28 PM by Garth nsw

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