i7 CPU Usage and Encoding Time

Discussion in 'Digital Video' started by UberAlles, Nov 19, 2009.

  1. UberAlles macrumors newbie


    Sep 11, 2009
    Hi all,

    As previously written, I am a neophyte in this video stuff but so far so good.

    I plugged my HV20 (daisy chained through my Drobo no less) and IMovie picked it up without a hitch. Didn't do original size only large and everything went swimmingly although slow due to realtime acquisition.

    My question is now, I'm exporting to iDVD and I have the CPU usage bar(s) up and it doesn't look like any of the cores are going flat out....the process task manager shows 100%+ usage but the CPU bars aren't fully lit. I'm assuming 25% load share across cores.

    The elapsed time is about 25 minutes and I'm not sure if that's good.

    Anyone smarter than me wanna let me know?
  2. huntercr macrumors 65816

    Jun 6, 2006
    Yep. That looks about right. Exporting from iMovie is not multithreaded, I believe.

    Burning your DVD is also going to take a very long time. ( don't be surprised if thats more than 2 hours depending on the quality choices and clip length you are burning )

    Welcome to the video world! It's very fun, but very slow. :)
  3. giffut macrumors 6502

    Apr 28, 2003
    I ...

    ... am picking on things, but: DVD burning itself does take a couple of minutes, depending on the speed of your DVD writer. It´s the encoding of the video material to DVD format that takes the most time. So it´s two stages:

    - Encoding Video for DVD usage
    - Burning DVD
  4. UberAlles thread starter macrumors newbie


    Sep 11, 2009
    Thanks for the feedback....

    Actually two things take a while I'm finding...

    One is the import from iMovie to iDvd....the next is the encoding and burning by iDVD to an actual disc....

    Either way, I appreciate the insight...things are starting to make sense....I had to find out if i had a lemon i7 or not! :p

    So far it's really fun doing this.....but slow as said.....here's hoping iMovie 10 makes use of multicore and multithread.....
  5. MrSEC macrumors regular

    Apr 17, 2008
    UberAlles, don't take my word as gospel,but I've heard Roxio Toast 10 is much faster and better at encoding than iDVD. It might be worth looking into...

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