13 Replies Latest reply: Nov 1, 2012 12:29 AM by andynick
jaimefromchicago Level 1 Level 1 (0 points)

Hey all!

 

I just purchased a Western Digital 2 Terabyte My Book and all of a sudden, today, everything is stuttering upon playback, even clips on another hard drive.

 

HELP!


Final Cut Pro X, Mac OS X (10.6.8)
  • 1. Re: Video Stutter
    Ian R. Brown Level 6 Level 6 (17,900 points)

    Nobody can help you with that bald statement.

     

    We need precise details of your computer setup and editing workflow.

  • 2. Re: Video Stutter
    jaimefromchicago Level 1 Level 1 (0 points)

    I'm running on an iMac 3.06 GHz Intel Core i3 with 16 gb of memory.

     

    I had previously been using two daisy chained Lacie external hard drives.

    Having decided that I probably need more memory for this project that I'm

    editing in FCPX, I purchased a Western Digital My Book 2tb external hard drive.

    I have it daisy-chained to one of the Lacie drives (the other I put away) and

    ever since then, all the clips in the timeline play with skipped frames or lagging.

    I tried playing a clip from the LaCie drive as a stand alone and it did the same thing.

     

    Jaime

  • 3. Re: Video Stutter
    andynick Level 5 Level 5 (4,840 points)

    How are the external drives connected? They must be Firewire 800 or faster.

    Is the WD Drive Formatted 'Mac OS Extended'? (Journaling is not required for video drives).

    Daisychaining the drives isn't helping, particularly if the connection is slow.

    Andy

  • 4. Re: Video Stutter
    Ian R. Brown Level 6 Level 6 (17,900 points)

    Just in case you have done something that has intrinsically messed up FCP X, trash the preferences with this:-

     

    http://www.digitalrebellion.com/prefman/

  • 5. Re: Video Stutter
    Russ H Level 6 Level 6 (14,270 points)

    It does sound like it could be a throughput problem. In addition to following the above advice, download the AJA systems test and run the speed test on the WD drive at the resolution you are working with.

     

    Russ

  • 6. Re: Video Stutter
    jaimefromchicago Level 1 Level 1 (0 points)

    I did the aJa systems test and it gave me

     

    Frame Size Sweep

      KB     MB/sec

               Read      Write     

    684.0      24.4      19.4     

    812.0      24.2      22.9     

    912.0      24.3      21.1     

    1080.0      19.2      24.1     

    1800.0      24.3      25.9     

    2400.0      19.7      26.5     

    4052.0      20.8      25.1     

    5400.0      20.4      24.5     

    8100.0      22.7      24.6   

     

    My project properties are

     

    Default Event : Born (project name)

    1440x1080 I  29.97i

     

    1080 HD

     

    I hooked up the Western Digital dirve directly to my iMac via 800 FireWire cable, and daisy chained the 500 gigabyte LaCie drive to it.

     

    It's better, less stutter, but it's still not playing smoothly.

     

    Again...before, when just using two LaCie drives, I NEVER had an issue.

     

    Should I wipe the drive and reformat it?

     

    Thanks again you all!

     

    Jaime

  • 7. Re: Video Stutter
    Tom Wolsky Level 10 Level 10 (106,230 points)

    How is it formatted? It should be Mac OS Extended.

  • 8. Re: Video Stutter
    jaimefromchicago Level 1 Level 1 (0 points)

    Mac OS Extended (journaled)

  • 9. Re: Video Stutter
    Jakob Peterhänsel Level 3 Level 3 (655 points)

    Well, some other thread here pointed to drivers for WD disks.. I think it's strange for a FireWire drive, but they do provide them.. Have you installed those, or?

     

    And what kind is it? There seem to be a huge selection of WD My Book drives..

  • 10. Re: Video Stutter
    Russ H Level 6 Level 6 (14,270 points)

    I think there is something going on with your WD. Those are pretty low #s for FW 800. I'd expect them to be in the neighborhood of 60 to 80 MBS.

     

    Russ

  • 11. Re: Video Stutter
    Tony Gay Level 4 Level 4 (1,625 points)

    The other neat app to try is the one from Blackmagic, this application tells you what video specs you can, read and write, not just Mbs, rather neat.

     

    https://itunes.apple.com/au/app/blackmagic-disk-speed-test/id425264550?mt=12

     

    Pegasus DiskSpeedTest.png

    This is a screen grab that it saves showing the details of my Pegasus 12TB Thunderbolt drive, note how it lasts all the different video formats and whether the drive is capbable of handling them, the RHS panel shows how many frames per second the drive can read/write, helping to assess how many streams you are able to playback at once, as is the case for multicam editing.

     

    Tony

  • 12. Re: Video Stutter
    jaimefromchicago Level 1 Level 1 (0 points)

    Thanks for the help folks....still having issue with all of this.

     

    Any more ideas?

     

    I hooked up the WD drive directly to my computer and still there's a lag.

     

    Again, none of this was happening before....my computer doesn't even see my HV20 anymore.

     

    ah!

  • 13. Re: Video Stutter
    andynick Level 5 Level 5 (4,840 points)

    Jacob suggested there are drivers available for WD hard drives - did you investigate that possibility?

     

    What speed is the hard drive (RPM) it should be 7000 or more.

     

    Have you tried using a different FW 800 cable?

     

    Have you done the AJA speed test with your LaCie drive? (For comparison).

    Andy