Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

Observations: Recently, not sure when it happened, with upgrade to Lion or before, but I have not been able to cleanly watch a video of any type in iTunes while something [movie, tv show, app, podcast, etc.] is downloading from the iTunes store. This is particularly annoying when renting a movie, and trying to start watching before the movie is downloaded. There have been no hardware changes, and playback used to work perfectly during download. There have been a lot of recent changes to iTunes, Mac OS, and I would like to fault isolate. How can I determine which software might be causing this problem, or if something is interfering with playback?

Problem: iTunes video playback is choppy only while downloading anything from the iTunes store. Video is choppy at all sizes, e.g. actual size, full screen.

System Setup: iMac 20-inch, Early 2008, 2.4GHz Core 2 Duo, 4 GB 800 MHz DDR2 SDRAM, ATI Radeon HD 2400 XT 128 MB, Mac OS X Lion 10.7.2; iTunes 10.5.2; iTunes library stored on external Firewire HDD, HDD approx. 50% full; All software up to date.

Solutions already tried: iTunes reinstalled; Quicktime reinstalled; reboot; All other apps closed; iDevices ejected from iTunes panel;

share|improve this question
    
This almost sounds like a lack of CPU power, but that Mac should have plenty of power to playback video. I would look at Activity Monitor while you are trying to play a video and look at the CPU use while playing back a video. –  Nathan Jan 15 '12 at 21:55
    
CPU was interesting, it varied widely from 1% to 122%, but mostly stayed around 10% of 1 CPU. I would expect the CPU to be higher and more steady state. There was plenty of SDRAM free, iTunes Real+Virtual Memory was below 1GB. Also, the video being played was previously downloaded. –  Matthew Jan 16 '12 at 9:24

1 Answer 1

I'm not sure how this was resolved, but the latest version of iTunes now works fine.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.