i7 CPU Usage and Encoding Time

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

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  1. UberAlles, Nov 19, 2009

    UberAlles macrumors newbie

    UberAlles

    Joined:
    Sep 11, 2009
    #1
    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?
     
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  2. huntercr, Nov 19, 2009

    huntercr macrumors 65816

    Joined:
    Jun 6, 2006
    #2
    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. :)
     
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  3. giffut, Nov 20, 2009

    giffut macrumors 6502

    Joined:
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    Location:
    Germany
    #3
    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
     
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  4. UberAlles, Nov 20, 2009

    UberAlles thread starter macrumors newbie

    UberAlles

    Joined:
    Sep 11, 2009
    #4
    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.....
     
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  5. MrSEC, Nov 20, 2009

    MrSEC macrumors regular

    Joined:
    Apr 17, 2008
    #5
    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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