Previous 1 2 3 4 Next 51 Replies Latest reply: Oct 6, 2013 3:19 PM by dl_photo Go to original post
  • Knightslugger Level 1 Level 1

    Doesn't look like it was a permanent fix either, only temporary... so I'm back to square ONE. this is beginning to get ridiculous.


    I've removed Flash using the uninstaller, I've deleted the data as suggested... and i'm still getting jumpy video on fullscreen... i don't know what else to do here... i'm thinking it's NOT a flash player problem.

  • EeZeEpEe Level 1 Level 1

    Is this happening when you are trying to play the videos with the HTML5 player? You can tell if it's that player if you have the option to change the speed from normal to slower or faster. If so I noticed those videos stutter until you click on "Normal". You don't even have to change the speed. It just ends up playing smoother.


    Well to be sure it's Flash or not, try creating a new account on your computer. It can even be a new guest account. Try playing a YouTube video in fullscreen with that account. If it's nice and smooth (Which is what happened for me and another person) than it is the Flash files associated with the account that doesn't play smoothly.

  • pondchadwick Level 1 Level 1

    This is good advice, as is using the uninstaller. However these steps did not work for me. I found there were a few files left behind after using the uninstaller (probably from an older version of flash?). I found that I had no issues when I used a guest account. I think I used spotlight to find abode, flash and macromedia related files. Also a permissions repair might be required

  • Knightslugger Level 1 Level 1

    Making a new account did solve the issue of choppy playback for one wake cycle.


    I made the new account last night, was woking great, i put the computer to sleep, went to bed, did my 9-5 thing, came back, woke the computer up and BAM, right back to choppy playback.


    so THAT doesn't work...

  • pondchadwick Level 1 Level 1

    Do a SMU reset, see if that changes anything

  • Knightslugger Level 1 Level 1

    You Mean SMC Reset... right? for iMac, that entails a shut down, unplug (30 sec), replug (15 sec), and restart. i will try in the AM.

  • pondchadwick Level 1 Level 1

    Your right it's called SMC now, but same thing. I believe you unplug the power cord for 15 seconds, plug it back, wait 5 seconds, power on.

  • Knightslugger Level 1 Level 1

    Did it, and once again, a sleep/wake cycle went right back to choppy playback.


    I'm also noticing it is also effecting SilverLight videos, and i think it has something to do with the video card performance because if i adjust the volume, the icon that pops up fades choppy as well...


    not showing excessive memory usage or processor load either...

  • pondchadwick Level 1 Level 1

    If you have the Snow leopard disk 2, you might want to run the apple hardware test. Also you could install the istat dashboard widget, it may show if the fans/temps are different after waking from sleep. 

  • Ant Booth Level 1 Level 1

    I have experienced a similar issue, the temporary fix I have is to keep the 'About this Mac' window open and in full screen it runs like a dream....Without the 'About this Mac' window open i get a distorted choppy screen...



  • bence2005 Level 1 Level 1

    I have the same problem to. Youtube and flash videos are choppy and I don't know what should I do. It is really annoying. I tried several browser but nothing changed avery browser is choppy. :S I disabled the hardware acceleration on youtube, does anybody have any experience with this option? Work or not? I don't know what would be the best soultion and when???

  • VWOttawa Level 1 Level 1

    I also have the same problem, and it's not just YouTube, I tried a live streaming video from a different website and it was also choppy at full screen. I also experience the temp fix for one cycle.

  • Aidar Level 1 Level 1

    Adobe confirmed that latest Flash Player 11.2 for Mac OS X may indeed suffer from choppy video playback, bug #3200752: “We’ve been able to reproduce this internally, and while it might not make our next release (due out in just a few weeks) we will investigate this for a future build. I’d like to recommend letting other user’s know about this issue and have them vote and comment so that we can adjust and prioritize accordingly.” More details:


  • ervzman Level 1 Level 1


    I think this will help my problem too. I checked on my folders and this is what I have.

    Can someone interpret... please. Thanks!

    Screen shot 2012-11-27 at 9.41.05 AM.png

  • ervzman Level 1 Level 1

    Hello, any more ideas?