Can't play a mpeg on QuickTime X

I backed up files from my handicam from imovie to an external hard drive. They were saved as mpeg files and when I try to open them on Quicktime X it says the format is not supported.....any suggestions.
p.s very new to a mac.

http://apple.com/quicktime/mpeg2
Read the FAQ's before you buy.

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Hmm, Perian should provide flv playback in Quicktime. Maybe you need to update Perian? I used to always use Perian but since upgrading to Lion I have not installed it and now rely on VLC for non-apple standard media playback. Deluxe can handle the flv-format.It will convert flv to mov. Hope it helps

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Why my quicktime player can't play an mpeg file

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DVD Player should be used, instead.

How can I play an mpeg-2 file from my handycam on quicktime?

When I try to play an mpeg-2 file from my handycam I receive an error message stating that a required codec is not available. How can I get this codec and is it a free download? Neither audio or video will play.

Thanks for your input. To clarify a couple of things, I'm ultimately looking at editing my video from the handycam, hopefully with imovie. In exploring how to do this I came across mpeg streamclip video converter for osx but then discovered that in order to install it with Lion, I'd need to download a mpeg-2 playback component. From what I understand, this component is inherent in QT 10.1 with Lion and therefor you can't brink up a 'disk image' in order to install the video converter. Sounds like I'd need to buy that.
As previously mentioned, there are three forms of QT support for MPEG-2 content:
1) The QT MPEG-2 Playback Component ($19.99) is required for use by QT 7 based applications (QT 7 Player, GarageBand, as well as, QT 7 based third-party applications like MPEG Streamclips. This component is not used required for nor used by the QT 10.1 Player or iMovie '07/'08/'11 apps.
2) The Importer Component installed as part of your video editing software package. As previously indicated, this package handles the importation of content from various camcorders employing many different compression formats. It's primary purpose is to make the imported content "edit" compatible with the video editing software. In the case of "muxed" GOP MPEG-2/AC3 content, it decompresses/turns the P- and B-frames into I-frames which essentially makes the video QT editit compatible at the frame level without actually converting the video to a different compression format. This is a moderately fast operation which does not degrade the video quality. In addition, the importer component also converts the AC3 audio to QT "edit" compatible AIFF (Linear PCM) content and places both the video and audio content in an MOV file container. Since "muxed" GOP MPEG-2 content essentially synchronizes the audio and video content spatially, the last step in the import process is to add a time offset to minimize audio/video drift in the MOV file which synchronizes the multiple data tracks temporally with respect to an external timing reference. The result of this operation is QT edit compatible content in an MOV file container that is playback on any system having iMovie '07/'08/'11 installed. That is why I always recommend using this work flow for content still located on the camcorder.
3) The QT 10.1 MPEG-2/AC3 GOP support appears to be built into the app or only accessible using the app and not available for use by either QT 7 or iMovie applications. This content is not QT edit compatible at the frame level (i.e., the manner in which all Apple video editors work).
4) In the case where the "muxed" MPEG-2/AC3 content has already been removed from the camcoder and you can no longer "import" the content as per option 2 above, purchase of the QT MPEG-2 Playback component and use of the MPEG Streamclip app provides, in my opinion, the greatest degree of secondary functionality. In this case you have the option of demultiplexing the original content to M2V and AC3 content or paired M2V and AIFF elementary stream files or conversion of the content to any QT editit compatible audio and video compression combination including "Pro" editing codecs if FCP is installed on your system.
5) With regard to the installation of the QT MPEG-2 Playback component, you have three options:
a) You can install the component on a pre-Lion system and then copy it to your Lion system.
b) You can download the MPEG Streamclip "beta" package and us the "helper" software to install the component directly on the Lion operating system.
c) You can us an app like Pacifist to extract/install the component directly to the Lion OS platform.
In any event, remember that this component is not supported by the QT 10.1 app nor is AC3 natively supported by the QT 7 app and so you will have to use the MPEG Streamclip app to both make use of this component and provide app support of the AC3 audio which can then be "bridged" for use by QT 7 based apps.
All this being said, when I decided for the first time to just open my video in QT 10.1 (which is a .mpg file) it wouldn't open and the error said that a required codec wasn't available. The file is .mpg and info states it is a mpeg-2 video, AC3. I have VLC installed and can view the video with that, but am just frustrated as to why QT 10.1 won't play it (as I believe it should, since the file is a .mpg).
As I have repeatedly stated, I consider QT 10.1 "a work in progress" and have given up trying to guess why it works in some cases and not in others. In some cases, files sent to me having the problem you describe suddenly became playable in QT 10.1 after using VLC to copy the data from the original file container to a new program stream file container (i.e., not conversion was applied—just the copy of the original data). You can try this for playback purposes but it will do nothing for your editing work flow unless you plan to us QT 10.1 to convert the content to H.264/AAC for editing in which case HandBrake or MPEG Streamclip (with QT MPEG-2 Playback component) would probabaly work on the original file. (I.e., I prefer using a low-compression, high data rate compression format at highest video quality setting as an "intermediate" editing format to preserve as much of the original quality as possible.)
One thing I also noticed, there is no QT file in my library (I didn't move, delete or change anything, just looked to see if I could find the file as mentioned on another forum, but it wasn't there). Not sure if this has a connection as to whether the .mpg file can be played with QT 10.1 or not.
If you are referring to an MOV file created by importing the content directly from the camcorder, then it will be located in your iMovie "Event" folder, the location of which will depend on which drive you assigned it to. Such a file sould already be both playback and editable in QT applications.
Any other input would be much appreciated. Am I missing something from my QT 10.1 that should have been installed?
I believe that covers just about everything. Since QT 10.1 is the original version installed by the Lion OS installer, there have not been any updates to it and, unless you have been messing around deleting things in your QT component folders, there is little probability that anything has been deleted, removed, or misplaced during normal system use. What I normally recommed is that you keep QT 10.1 installed and install the Lion compatible version of QT 7 (v7.6.6 if not already installed) to maximize your QT playback capabilities between the two. In fact, I tend to use the QT 7 "Pro" player for most daily "quickie" edits and still consider it the more useful of the two utility-Players.

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You need Perian from http://perian.org/
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I am having this same problem. I believe everything was working fine before I installed Lion the other day. The thing is, I also installed Final Cut Pro X (Previously had Final Cut Express installed), and so I am not sure what screwed up my ability to play this video. ere is some information, I would appreciate any help anyone can give:
I cannot play m4v files in iTunes or QT 10.1(501). I was not sure how to install just Quicktime, so I re-installed all of Lion and still does not work.
VLC and QT 7 play the file just fine.
I have tried installing the latest version of Perian, still will not play
I have uninstalled DivX and I don't see any particular other video codecs installed.
Compressor 4 loads the file and can play it fine
MPEG Streamclip plays the file fine
QT 7 reports format as "MPEG-4 (Perian)"
QT 10.1 reports format as "mpeg4"
VLC reports Codec as MPEG-4 Video (mp4v)
In the log I get this when I try to click the play button in QT 10.1:
7/23/11 12:46:44.154 AM QuickTime Player: AudioConverterNew returned 'fmt?'
7/23/11 12:46:44.155 AM QuickTime Player: Prime failed ('fmt?'); will stop (48000/0 frames)
7/23/11 12:46:44.156 AM QuickTime Player: AudioConverterNew returned 'fmt?'
7/23/11 12:46:44.156 AM QuickTime Player: Prime failed ('fmt?'); will stop (144000/0 frames)
Here is a link to one of the files: http://dl.dropbox.com/u/14091323/Intro.mov
If your Lion QT 10.1 can play this file let me know, and if so why it can play (did you install a special codec?), or if not and you know why it doesn't play please let me know.
Very frustrating. Does anyone know where I can download the QT 10.1 that comes with Lion to try to re-install just that? I also tried to Repair Permissions.
Thanks for any help!
Brian

I came here as I'm having trouble playing back MPEG4 files using Lion. I tried your file - clicking it plays fine in Safari, but downloading and opening in Quicktime X will not play (however if I drag the slider and scrub through it, I can see every frame, it just won't play.)
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QT does not play DVD movies natively. Apple does sell a mpeg2playbackcomponent that plays some DVDs but it has a number of limitations, including that it will not play mpeg-2 in transport stream format. It also will not play encrypted commercial DVD movies or sound that is in AC3 format. It does not export sound from mpeg2. Read the FAQ for the component here:
http://www.apple.com/quicktime/mpeg2/faq.html

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You need to find the specs of the MPEG-4 videos to work out why.
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MPEG-4 video up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats
Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format
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http://www.apple.com/appletv/specs.html
AC

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Then I suggest you compare the size of the playing file on your camera with the size of the non-playing file on your computer—they may not be the same. As QTKirk indicated, 40.37 KB seems unreasonable for any normally encoded non-anamorphic 1280x720 MPEG-4/AVC file more than a few frames long. For comparison purposes, a typical 1280x720 JPEG photo compressed to its smallest file size setting on a Mac would have a file size on the order of 100 KB. Other ways to look at your file would be...
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Love the icon Baby Boomer. What is it? Flash?

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Her is a link to some tutorials you need to learn:
http://support.apple.com/kb/PH12692
http://fcpx.tv
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Can't play a mpeg on QuickTime X

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