12 Replies Latest reply: Nov 23, 2005 2:19 PM by Maciej Maciej
MacPaint Level 1 (40 points)
I am on a 400mhz iMac G3 with 384Megs of ram running 10.3.9. I have quicktime 7.0.3.

Just recently, when I try to watch media files like quicktime, the movies are out of sync. The video can't seem to keep up the audio. the video skips many frames and i am left hearing the audio and seeing only a small fraction of the video frames.

this happens when i view film trailers.

I have restarted in attempt to free up any memory, but even then i still have this problem.

Any idea?
  • F Shippey Level 7 (21,500 points)
    Go To http://www.apple.com/quicktime/player/specs.html to see the system requirements for QuickTime 7.

    A 400mhz G3 is the minimum requirement, but the purchased video playback requirements are a lot higher - 500mhz G4.

    The trailers you are trying to view may be slightly more forgiving than purchased video clips, but I strongly suspect a 400mhz G3 just isn't quite up to being able to view the majority of today's video clips.
  • Antoinette Tutterow Level 1 (45 points)
    Welcome my friend, to the realm of an outdated mac! I run a G3 with 1 Gig of RAM and 500 mhz and have the same problem with running preview vids in iTunes and large quicktime movies. I think its just the processor :\
  • MacPaint Level 1 (40 points)
    do you guys think it is the clips or the QT version?

    Because i did not have this problem in the past. i mean it was always a little slow, but now it is basically unwatchable.

    If it is the QT application, anyway to get/install earlier versions of QT? Any suggestions on which version is best suited for our G3s?
  • MacPaint Level 1 (40 points)
    acutally i will answer my own post...i think it is the clips. i find the "bigger" trailer clips are slow and unwatchable, but the "smaller" ones seem to be ok.

    I always used to watch the bigger ones and never had a problem...i guess times are changing.
  • Russell Madden Level 1 (15 points)
    I have an iMac G3, 500 mhz, 500 meg RAM and DSL, 10.3.9, QT 7.0.3. Until Apple recently changed the Quicktime movie trailer site, I could watch any of the non-HD movies just fine, even the "large" ones. Since the changeover of the QT site, I also can no longer watch the large or most of the medium-sized trailers. Even the small ones aren't always so good. I can understand the HD trailers being too much for my old computer, but it makes no sense that in the space of two weeks, I can no longer watch the regular trailers. I don't see how my computer can be at fault. What changed was not it but the QT version and the QT movie trailer site
  • Chris Fenwick Level 2 (355 points)
    what you guys are experiencing is the downside of H264 which Apple has recently changed all of it's trailers to... it can be a very beautiful codec but it is a hog when it comes to the DECOMPRESSION stage... which is what you are doing at home.

    yea... your older iMacs just can't keep up.

    I should clarify, I don't know that apple is REcompressing all the old files but they are compressing everything new in H264.
  • Will Leavitt Level 1 (0 points)
    I think quicktime 7 is broken for older cpus, and needs to be fixed. I
    have a 500MHz ibook G3 with 640MB and Quicktime 7.0.3, and all of a sudden quicktime and iMovie have become unusable for large movies.

    I am no longer able to watch movies I created on this laptop in iMovie!
    iMovie itself is no longer usable.

    VLC has no problems.

    Is it possible to go back to 6.5? I foolishly updated both my machines at once.
  • Kev21 Level 1 (0 points)
    There must be a technical problem regardless processor power.
    Here is another thread you may find it same.
  • Thomas Silver Level 1 (40 points)

    I have the same exact equipment but do have 640 mb of RAM. I have had the same problem. I may be wrong but I think the slow processor speed is just not enough anymore. Still have QT 6.5 which I still use instead, however more things require QT7. I've reached my limit and am waiting for the new iMac G5 w/iSight 20" to arrive.
  • Cliff Bradley Level 1 (5 points)

    I'm having the same problem with QT 7.0.3 and I've got a Dual 1Ghz G4 w 1.2 Gig of RAM. Surely it's not my processor! iMovie is doing the exact same thing. Makes it impossible to do any editing.

    This all started for me after I lost my QT Pro license when I updated from QT 6x to 7 (yep, didn't think about it till it was too late :() and then tried unsuccessfully to go back to version 6x. In the end I completely reinstalled QT 7 and paid for the PRO license.

    It seems to play ok if I open a file and play it from the beginning, but the moment I skip ahead in the timeline it slows to a framerate of between 1-3 and grinds to a halt. I don't know if it's something I did when trying to go back to version 6x - maybe I corrupted a library file or something - or what.

    I'm on OS X 10.3.9 so it SHOULD all work fine.

    Anyone have any ideas?
  • Cliff Bradley Level 1 (5 points)
    Me Again,

    Well I've gotten to the bottom of my problem. I hope it helps. Apparently it's a bug between QT 7 and my Digi 002 (pro-tools) Audio Interface. At the moment there's no solution, and from what i've read, reinstalling back to QT 6.5 doesn't fix it!?! So any one running a Digi-Design audio interface with QT 7 is going to have problems it seems.

    When I turned off my Digi 002 and used the crappy built-in mac audio card both QT and iMovie worked no problems.

  • Maciej Maciej Level 1 (5 points)
    True! VLC and MPlayer are using the same codecs and play movies sooth, quicktime 6 too. This situation is realy strange coz some of my old avi's seems to be more processor hungry on Quicktime 7 than HD 480 movies coded in H.264!!!

    Is it possible that Quicktime 7 is worse optimised than its predecessor? How can it be that its working slower than open source players on the same codecs?