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Fix a video playback issue with QuickTime 7.0.4 Apps
If you have recently upgraded to QuickTime 7.0.4, you may (or may not) have noticed that some videos that used to play fine no longer do so. If you're getting choppy audio and/or choppy and laggy video playback after upgrading, I've found a simple fix.

Go into QuickTime Player's Preferences, and turn off the option for "Use High Quality Video Setting When Available." You must re-open your videos to see the changes, but they should play much smoother now.
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Fix a video playback issue with QuickTime 7.0.4 | 9 comments | Create New Account
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Fix a video playback issue with QuickTime 7.0.4
Authored by: lukeandrews on Jan 20, '06 09:28:35AM

Disabling this would seem to suggest that you might lose some quality along the way. Is there any evidence one way or the other?



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Fix a video playback issue with QuickTime 7.0.4
Authored by: Spaztik on Jan 20, '06 01:57:30PM

I couldn't really see any difference in Quality. You may want to check two videos side by side with one of the videos using high quality (Window>Show Movie Properties>*click video track*>Visual Settings: In the lower right corner there is a "High Quality" check mark)

Then I guess you could play both of those and see if you notice any quality difference. It might be just like iMovie where it does field blending instead of using just one field... but, I'm not sure.



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playback issue with QuickTime 7.0.4
Authored by: Drake411 on May 20, '08 05:04:12PM
Wow thanks that is such an improvement.

I have an 800 MHz Power PC G3. My G3 has 640 MB of SDRAM and though the play back of web based stuff isn't flawless your tip has made it so much better that I can actually watch videos out in the garden. It works with lots of tabs open but I haven't tried a bunch of APPs. I am just running Safari and there is still the odd pop. I've been dealing with this for so long I'm glad I stumbled on this fix because I dread going back to reinstall the older 10.3 though here is the link for reinstalling quicktime 6 for others who cling to their beloved iBooks like me.
http://www.apple.com/support/downloads/quicktime652reinstallerforquicktime701.html


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Fix a video playback issue with QuickTime 7.0.4
Authored by: bluehz on Jan 21, '06 04:31:02AM

There are definitie choppiness issues with the latest QT 7.0.4 player and this tip DOES NOT SOLVE THE ISSUE. I keep an older 6.5.2 player stashed away and if I play the same video in both players - the 7.0.4 is VERY CHOPPY while the 6.5.2 player is smooth as can be. This is regardless of the "quality" setting mentioned in this hint.



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Fix a video playback issue with QuickTime 7.0.4
Authored by: Spaztik on Jan 21, '06 05:51:26AM

Maybe my computer is just slow enough to be choppy with "High Quality" checked... as soon as I turn it off... it's smooth again. I also talked to some other people about this and turning off High Quality helped them too. How many MHz is your computer?



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Fix a video playback issue with QuickTime 7.0.4
Authored by: bluehz on Jan 22, '06 03:29:37AM

I am embarrassed to say how many MHz - I am actually running an old G4/400 (AGP). Point being though that the previous QT player ran fine on this antique with no choppiness, and the latest QT player does not.



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Fix a video playback issue with QuickTime 7.0.4
Authored by: Spaztik on Jan 24, '06 07:56:16AM

You know... if you can find a copy of the QuickTime 6.5 PLAYER, you can actually launch and use QuickTime Player 6.5 without installing QT 6.5 and it works as smooth as it did with QuickTime 6.5 installed. I tried it myself and a friend of mine also confirmed that even on his old Mac, it fixes the choppiness issues. Something is definitely wrong with QuickTime 7 Player. Maybe it's the fact that QuickTime 7 is now coded with Cocoa instead of Carbon which makes it slightly slower... Cocoa apps tend to require better processors to operate as fast as a Carbon App... I could be wrong... anyone wanna prove me wrong?



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Fix a video playback issue with QuickTime 7.0.4
Authored by: Zo-1 on Jan 24, '06 02:44:06PM

I've got choppy video in QuickTime 7.04 on G4 powerbook at 167MHz. Play the same file with MPlayer or anything else and it's perfectly smooth. Where's Apple?



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Fix a video playback issue with QuickTime 7.0.4
Authored by: tofugalaxy on Nov 17, '06 02:59:00PM

I was having trouble with choppy video on my 17" G4 laptop with 2GB RAM, Quicktime 7.1.3, OSX 10.4.8. I tried the setting change suggested by Spaztik and it works great. The choppiness is all gone.

Thanks for posting the tip.



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