Apple releases QuickTime 7.4.5

Apple today released QuickTime 7.4.5 which includes fixes that enhance reliability, improve compatibility with third-party applications, and address security issues. This release is recommended for all QuickTime 7 users.

For detailed information on the security content of this update, please visit this website:

Information about the security content of QuickTime 7.4.5 can be found here.

QuickTime 7.4.5 is available via Software Update.

[Thanks to MacDailyNews Reader “John” for the heads up.]


  1. Now my Quicktime is much quicker than the previous version of Quicktime, and the download was quicker the last time since I got a quicker router and my ABS is quicker than the last ABS that I had which was quicker than my old DSL. Someone quickly slap me. ” width=”19″ height=”19″ alt=”wink” style=”border:0;” />

  2. Before I d/l QT I’m going to venture a guess (based on past experience) that this update does NOT fix:
    1. Stuttering and completely stopping the play of some (not all) older mpeg1 movies after scrubbing forward. Been an issue since the last few updates.
    2. Missing IN and OUT markers when playing mpeg1 movies. Been an issue since the last few updates.

    We’ll see….

  3. Installed QT update. Still the same. So Apple, are you going to drop all support for mpg files in the future? What about those mpg movies I made back in the 90’s, on a Mac? If I had the original files from my camera I’d encode them in h.264, but I don’t. Re-encoding an mpg which is already in marginal quality ain’t gonna cut it.

    See, I’ve got this long movie (1 of several) of a helicopter drag race, and you have to scrub to the end to see where I won. But you can’t, you have to watch 30 minutes of it before you can see that part. The other movies… well, I won’t go into that.

  4. “This release is recommended for all QuickTime 7 users.”

    Yeah and so was the one that totally broke After Effects rendering and third party apps that made movies. Maybe if they actually disclosed what’s fixed WE can decide if its recommended for us.

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