How do i change my quicktime player default back to quicktime 7 as my new quicktime won't play  certain formats

how do i change my quicktime player default back to quicktime 7 as my new quicktime won't play  certain formats

Select one of those files, CMD+I, select QT 7 from the Open With list, and then click the Change All button. Repeat for any in the format class you want to change.

Similar Messages

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    Is anyone else having this problem and how to fix it?

    There are no preferences for Quicktime 10, only for QT 7.
    Mac OS X 10.6 includes QuickTime versions 10.0 and 7.6.3. The QuickTime 7 player will only be present if a QuickTime Pro key was present at the time of installation, or if specified as part of a custom install, or individually downloaded:
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    I have searched for this addition software, but to no avail.

    I took your advice, and attemped to use iMovie with the files, but it fails to do anything.
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    Hi,
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    /H

    I don't think you can change it.

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    I recently purchased QuickTime 7 Pro to convert avi files to mov files for editing on Imovie. However, QuickTime won't play the files. How can I get them to play and how can I convert them to mov files?

    I recently purchased QuickTime 7 Pro to convert avi files to mov files for editing on Imovie. However, QuickTime won't play the files. How can I get them to play and how can I convert them to mov files?
    Both the AVI and the MOV file extensions refer to the file container and not the compressed data the file contains. Both are generic file containers in that each may contain any valid combination of audio and/or video data that is compatible with the codec component configuration of the system on which the file was created. On the other hand, whether a file is playback compatible, conversion compatible, and/or edit compatible depends on the data actually contained in the file container. So, you are basically dealing with two separate issues here—the container and what is inside it.
    Basically, if you want to make your files ediit compatible with iMovie, you must change your file container to one that is acceptable to iMovie and convert the data to edit compatible audio and/or video compression formats as may be necessary. The best approach is to determine what codecs were actually used to create the original AVI files and add them to your system if possible. In most cases a codec package like Perian can be added to your system's codec component configuration to may the AVI file playable. Once they are playable, in the QT 7 app then they can be chnged or converted to file types and compression formats that can be edited in iMovie. (While Perian handles most codecs commonly used to create AVI files, it does not handle all possibilities and, while the Perian codec package still works under cureent Mac OS versions, its development group has decided to drop further development/support of the package.)
    Background: AVI is a file container originally developed by Microsoft back in 1992 but for which official support was discontinued about 11 years. Despite its limitations, Windows users still tend to use this file based on its open source ease of use and generic nature, thus, making its use so popular that most users are unwilling to switch to more modern but less generic file types. Since some AVI legacy compression formats have never been transcoded for the Mac or use beyond OS 9 or OS X PPC platforms, it is often important to know what specific compression formats are contained in the AVI file to know which codecs to add to your system and which not to add in order to avoid possible codec conflicts.
    You can use many different converters to convert AVI files to iMovie edit compatible files. Most third-party apps contain their own buit-in codecs which do not relay on the Mac codec component configuration. Free ones, like HandBrake, usually have limited conversion capabilities while those that have more varied outputs are usually commercial in nature and will cost you additional cash. QT 7 Pro or the free MPEG Streamclip app allow you to access you own system's component configuration and use any available codec component like DV, AIC, MPEG-4, H.264, Photo JPEG, etc.—all of which are iMovie compatible for editing purposes—but only after making the AVI file QT 7 player compatible.
    In order to determine what compression formats wewre used in your AVI files you can
    1) Try checking the Finder "Info" window,
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  • How can I change the settings on my iPhone 5 so that I get new emails automatically? Without having to open the mail app.

    How can I change the settings on my iPhone 5 so that I get new emails automatically? Without having to open the mail app.
    Thanks!

    No, they will all follow the default setting. If you want them all to fetch, for example every 15 minutes, then set it to 15 minutes in Fetch. I only mentioned the other if you wanted to leave one for manual. I have an account on my phone that is a POP account that I get mail at home from. I let my home computer get this mail, but when I am out of town, I pick it up with the iPhone. That one is set to manual.

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    How do I change icloud email when my apple ID has been updated to new email? When I try to delete icloud account (in settings-icloud-delete account) I have to put in the password for the apple ID of my old email address, which is no longer my apple ID, and it says username or password is invalid (I'm guessing because that is no longer my apple ID).

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    how can i change my account id/email on my iphone for icloud??  it won't allow me to update it despite that it already has been updated online through both itunes and icloud.  HELP!!

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    Can anyone help me with this question?
    I bought a new laptop (Macbook) but the current installation files I have of Photoshop Elements 12 is for Windows, how can I change this? Or do I have to purchase an all new photoshopset? I hope not because that would be really expensive.

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    Help! - How do I change the Home file name back to Home? My supplier changed it to Demo. I've tried pressing return, control click and Get Info but none gives access to change the name. Any ideas?

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    Who is your "supplier?" Sounds like they're not terribly bright.
    Can you provide some details on why they "changed" it. Is this a brand new Mac? Were you having information transferred from another computer?
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    How do I change Chinese headings and Icons back to English in Safari after updating my iPad?

    This seams to be a problem with other people I think it is an os7 programming glitch

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  • Quicktime won't play my .mov files since I upgraded to Mavericks.

    Quicktime won't play my .mov files, even those from an iPhone, since I installed Mavericks.  "Tell Me More" doesn't tell me anything about a solution.  Any suggestions?

    What do I do?
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    If the data in the files is missing, then there is nothing to be converted by any application.

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